Category Archives: Knowledge

How to Avoid Pedals Hitting the Ground When Turning on an Electric Bike

The C3strom Astro Pro Moped-Style Electric Bike is a stylish and versatile e-bike that combines the convenience of a motorized bike with the style of a moped. However, its added weight and motorized components can make it more challenging to turn without hitting your pedals on the ground. Here are some tips for avoiding pedal strikes when turning on a C3strom Astro Pro.

1.Understand Your Bike’s Capabilities

The first step to avoiding pedal strikes on a C3strom Astro Pro is to understand its specific capabilities. This e-bike features a powerful 750W motor and 20-inch fat tires that provide excellent traction and stability. However, its weight distribution and turning radius may differ from other e-bikes. Consult the owner’s manual or talk to a bike shop expert to learn about your bike’s specific features that could impact your ability to turn without hitting your pedals.

2. Adjust Your Riding Style

Riding a C3strom Astro Pro requires a slightly different technique than a traditional bicycle. To avoid a pedal strike, make sure you’re shifting your weight and using your gears appropriately. Keep your weight balanced over the center of gravity and use your gears to shift to a lower gear before entering a turn. Take wider turns to avoid scraping your pedals on the ground. Plan ahead and anticipate turns to ensure you have enough space to make a safe turn without hitting your pedals.

3. Use the Throttle

The C3strom Astro Pro’s throttle allows you to accelerate without pedaling, which can be helpful when making turns. Instead of pedaling through turns, use the throttle to maintain your speed and coast through turns. This will help you maintain your balance and avoid putting too much pressure on your pedals. Of course, when the turn is tilted, pay attention to raising the pedal on the tilted side

4. Practice, Practice, Practice

As with any bike, practice is key to avoiding pedal strikes on a bike. Take your Astro to a safe area and practice turning at different speeds and angles. Experiment with shifting your weight, adjusting your line, and using your gears and throttle to find the right technique for your Astro.


The pedal stroke is a common problem when turning on any bike, but it can be especially challenging on an electric bike like the C3strom Astro Pro. However, with the right technique, adjustments, and practice, you can enjoy a smooth and safe ride on your e-bike, without worrying about scraping your pedals on the ground. Understanding your bike’s capabilities, adjusting your riding style, taking wider turns, using the throttle, and practicing will help you avoid pedal strikes and enjoy the full potential of your C3strom Astro Pro.

Is the lithium battery a good choice for Ebike

The battery is one of the most crucial parts of an electric bike, which has grown in popularity in recent years. One of the most popular types of electric bike batteries is the lithium-ion battery, which provides an excellent balance between cost, weight, and energy density. To choose the best e-bike battery for your purposes, you must be able to distinguish between the several types that are available.


The C3strom Astro Pro Class-3 Ebike is a long-range e-bike that makes use of a premium lithium-ion battery. A SAMSUNG detachable lithium-ion battery with a capacity of 1040Wh, or 52V20Ah, is featured in this electric bicycle. SAMSUNG 21700 cells, some of the most cutting-edge lithium-ion cells on the market, make up Astro’s battery. These batteries have a higher energy density than other kinds of batteries, allowing them to store more energy per unit of weight. The electric bike now has a greater range, enabling riders to go further on a single charge.


There are a number of things to take into account while determining the various varieties of lithium-ion batteries. On the battery label or package, start by looking for the letters “Li-ion” or “Lithium”. The most popular form of lithium-ion batteries, li-ion batteries provide an excellent compromise between energy density, weight, and price.


The voltage and capacity of the battery are additional factors to take into account. The battery’s capacity and voltage work together to determine how much power it can produce and store, respectively. In general, the electric bike has more power and a longer range with higher voltages and capacities. To guarantee optimum performance, it’s crucial to select a battery that is compatible with your electric bike’s motor and controller.


Another crucial aspect to consider is the battery’s charging time. Depending on the capacity and charging pace, lithium-ion batteries can take anywhere from a few hours to several hours to fully charge. The SAMSUNG battery in the C3strom Astro Pro Class-3 Ebike may be fully charged in around 5 to 6 hours with a regular wall socket. Riders can swiftly recharge their batteries and resume driving thanks to this.


There are a few suggestions to keep in mind when it comes to maintaining and prolonging the life of your electric bike battery. First, try to avoid completely draining the battery. This might harm the battery and shorten its lifespan. Instead, maintain the battery’s charge between 20% to 80% and charge it frequently to keep it topped off. Second, keep the battery from excessive temperatures, which can harm it and impair its performance. Finally, while not in use, keep the battery in a cool, dry location and keep it away from moisture and direct sunlight.


Finally, lithium-ion batteries provide a nice combination between energy density, weight, and price, making them some of the most popular and dependable types of electric bike batteries. You should also examine the battery’s voltage, capacity, and charging time. A 1040Wh lithium-ion battery made with SAMSUNG 21700 cells, which provide a high energy density and long cycle life, are used in the C3strom Astro Pro Class-3 Ebike. You may get a longer range and greater performance from your electric bike by paying attention to these suggestions and maintaining your battery. Overall, the C3strom Astro Pro is a great example of a high-quality electric bike that uses a reliable and efficient lithium-ion battery.


It’s also important to keep in mind that there are additional battery options for electric bikes, including lead-acid and nickel-metal hydride (NiMH) batteries. Yet compared to lithium-ion batteries, these batteries are less widespread and typically less effective. Similar in energy density to lithium-ion batteries, NiMH batteries are bulkier and less dependable. Although being much heavier, larger, and have a shorter lifespan than lithium-ion batteries, lead-acid batteries are far less expensive.


It’s vital to think about the battery when buying an electric bike, as well as the engine, frame, and overall design. The ride should be smooth and comfortable, and the bike should handle well and have adequate traction. Also, it should have a strong and resilient structure made of dependable parts that can survive constant use and wear and tear.


Lithium-ion batteries offer a reasonable compromise between energy density, weight, and price, making them a great option for electric bikes. When selecting a battery for an electric bicycle, please notice the battery’s voltage, capacity, and charging time. A fantastic example of an electric bike that makes use of SAMSUNG 21700 cells and a high-quality lithium-ion battery with a 1040Wh capacity is the C3strom Astro Pro. You may get a longer range and greater performance from your electric bike by paying attention to battery maintenance with these suggestions.

C3strom Astro Pro VS Super73 S2

Hello, everyone! This is C3strom with today’s review. In this article, we objectively and impartially compare the C3strom Astro Pro and the SUPER73 S2. The two electric bikes are similar in appearance, but there are some performance differences.

If you are new to electric bikes, this article will give you an idea of what electric bikes are like. If you are a regular player, here you will get comprehensive data on both vehicles. That’s because we have compiled facts and figures to help you make an informed buying decision. If you are faced with the decision of whether to buy a C3strom Astro Pro or a SUPER73 S2, this article will help you. Both are all-terrain electric bikes with fat tires. We compared the external features with the internal features to arrive at the following data. Let’s take a look.


Statistical overview

  C3strom Astro Pro SUPER73-S2
Motor BAFANG 750W 1200W peak HENGTAI 750W
Battery 1040WH(52v20ah) SAMSUNG 21700 cells 960W/H (48v 20ah)
Pedal Assist 5-Level 5-Level
Gearing & Rear Derailleur 8-Speed Shimano Altus Single Speed
Range 32-78 miles 40-75 miles
Seat Height 30.6″ 31″
Weight 94 lbs 73 lbs
Carry Capacity 330 lbs 325lbs
Frame Aluminum Alloy Aluminum Alloy
Lights integrated lighting system Headlight and Taillight
Display LCD with USB port LCD
Top Speed 32mph 28mph
Price 2699 3295

If we just look at the main statistics, these e-bikes are very similar. But we can see that the C3strom Astro Pro has a higher motor peak, power, and battery performance. It’s also cheaper.



This part is the core of the electric bike and is also the best part to know the bike’s performance. Let’s take a look at this comparison data.

  C3strom Astro Pro SUPER73-S2 Comments
Battery 1040Wh (52V20Ah) SAMSUNG 21700 cells 960Wh (48W20Ah) As for range, the SUPER73 S2 uses Panasonic’s 960WH (48v 20Ah) battery, which has a range of about 40-75 miles. Using only level 1 pedal assist, a range of up to 75 miles can be achieved. The C3strom Astro Pro, powered by a Samsung 1040WH (52v 20Ah) battery, offers a range of up to 78 miles with level 1 PAS, which further enhances the riding experience.
Motor BAFANG 750W HENGTAI 750W  In terms of power, the C3strom Astro Pro uses the BAFANG 750W rear hub motor for stronger performance and more guaranteed quality. It has a peak power of 1400W and a top speed of 32mph. The motor delivers fast acceleration and 80Nm of torque, enough to climb hills and ride over loose terrain. The SUPER73 S2, with its branded motor, has a peak power of 1200w and a top speed of 28mph.
Pedal Assist 5-Level 5-Level Both models feature the same pedal assist level, offering riders different riding experiences and allowing them to adjust the pedal assist level according to their preferences.
Charger 52V 4 Amp 52V 3 Amp C3strom Astro Pro is equipped with a 4A fast charger that fully charges your battery in just 4-5 hours. This allows you to ride all day long. SUPER73 S2, on the other hand, comes standard with a 3A charger that takes 6-7 hours to fully charge the battery. The charging innovation of C3strom Astro Pro is now more in line with the industry development level.
Display LCD with mobile app integration LCD Display The C3strom Astro Pro has an LCD and app integration system that shows you all the information, so you don’t have to scroll to find what you need. The SUPER73 S2 also has an LCD screen, but it doesn’t look as high-end and has a very simple interface.
Lights integrated lighting system Headlight and Taillight The C3strom Astro Pro also has an excellent integrated lighting system. Headlight with 130 lux, including high beam, close-up light, turn signal, and LED tail light. This makes it much safer to ride at night. The C3strom Astro Pro is also equipped with a horn to warn nearby pedestrians to keep you safe on city streets. The SUPER73 S2 is only equipped with headlights and taillights. The C3strom Astro Pro impresses with its attention to detail and thoughtfulness.
USB Charger Yes No The C3strom Astro Pro has a built-in USB slot hidden beneath the buttons on the display – a great convenience for riders who do not have to worry about their phone giving up the ghost while driving. However, the SUPER73 S2 is not equipped with this feature and cannot handle some emergencies.



Next, we looked at the configuration parts of the bike.

  C3strom Astro Pro SUPER73-S2 Comments
Brakes 4 Piston Hydraulic 2 Piston Hydraulic The C3strom Astro Pro uses a four-piston brake system commonly used on motorcycles, which effectively prevents disc brake rotors from swinging and significantly reduces noise. The effective position of the brake pads can also be adjusted as needed to stabilize pressure and maximize riding safety. The SUPER73 S2 uses the standard two-piston hydraulic braking system found on many similar electric cars. In terms of safety and braking, the C3strom Astro Pro’s braking system is superior.
Gearing 8-Speed Shimano Altus Single Speed The C3strom Astro Pro is powered by a Shimano Altus 8-speed transmission, which greatly improves the bike’s adaptability to different terrains and enhances the riding experience. The SUPER73 S2 is only available with a single-speed transmission, which means that uphill rides are more strenuous and less exhilarating.
Suspension Fork Air Suspension Fork Air Suspension Fork Both e-bikes come with the same type of front suspension with locking features. The lock feature allows riders to adjust the front fork to better suit the terrain they are riding. And the C3strom Astro Pro has more mileage than the SUPER73 S2, which means riders have more riding room to absorb bumps.


Other Components

Last but not least, it’s time to talk about some parts of the electric car itself. These features will improve your cycling experience and bring you lots of inspiration and a good mood.

  C3strom Astro Pro SUPER73-S2 Comments
Frame Aluminum Alloy Aluminum Alloy While both have aluminum frames, the C3strom Astro Pro uses today’s industry-leading design techniques. Its lines are smooth and do not lose hardness, the overall weld is tight, and you can hardly find a gap. The inner track makes the bike more elegant and tidy. However, the welding of the frame of the SUPER73 S2 is not ideal. It has obvious weld marks. The external wiring is making it look bloated and messy.
Carrying Capacity 330 lbs 325lbs With a maximum load of up to 330 pounds, the C3strom Astro Pro can carry more gear.
Tires Kenda K-Shield BDGR The SUPER73 S2 features BDGR tires that combine motorcycle and bicycle tire construction to improve traction, reduce road noise and increase stability. The C3strom Astro Pro uses more rugged, puncture-resistant tires. The integrated Kenda K-Shield tire liner consists of a layer of aramid and ceramic particles under the inner tread of the tire to protect the tire from sharp objects and any type of puncture.
Fenders Front and Rear Rear The C3strom Astro Pro has front and rear mudguards so you can ride on rainy days without worrying about splashing. The SUPER73 S2 does have front and rear fenders. But the front fender, which is only half wrapped, is not there to keep mud and water out but is more of an adornment for beauty.
Saddle Silicone filling No Silicone filling The C3strom Astro Pro seat is extra filled with silicone, which is unusual in most of its models. It provides good cushioning and shock absorption for a better riding experience. The SUPER73 S2 saddle isn’t filled with silicone, which means it can be tiring on long rides.



We have found that the C3strom Astro Pro and the SUPER73 S2 are quite different in detail. But we have made some points rigorously and fairly, rather than taking sides. The C3strom Astro Pro has unique features, from an integrated lighting system to advanced body welding technology, that makes it more competitive. So which bike do you like better after reading this article? If you have a different opinion, please feel free to leave a comment.

What Affects The Speed of E-bikes

Electric bikes, or e-bikes, have become increasingly popular in recent years as a convenient and eco-friendly mode of transportation. With the advancements in technology, e-bikes are becoming faster and more efficient. The speed of an e-bike is determined by a number of factors, including the motor, battery, and design of the bike.

In this article, we will explore what affects the speed of an electric bike, with a particular focus on our brand C3strom and our Astro Pro model, a Class 3 e-bike that is known for being fast and efficient.


The motor is the most critical component of an e-bike when it comes to speed. The motor is what provides power to the wheels and determines how fast the bike can go. The Astro Pro features a high-performance motor that is capable of producing up to 1400 watts of power. This powerful motor allows the Astro Pro to reach speeds of up to 32 miles per hour in OFF-ROAD mode, making it one of the fastest e-bikes on the market.


The battery is another critical component of an e-bike when it comes to speed. The battery provides power to the motor, the size and type of battery can affect how long the bike can go and how fast it can go. The Astro Pro features a high-capacity battery that can provide up to 80 miles of range on a single charge. This long-range battery also contributes to the bike’s fast performance, as it can provide the motor with the power it needs to reach high speeds.


The design of an e-bike can also affect its speed. A bike that is designed for speed will have a lightweight frame and aerodynamic features that reduce wind resistance. The Astro Pro features a sleek and modern design that is optimized for speed. The bike has a lightweight 6061 aluminum frame that reduces the overall weight of the bike, making it easier to accelerate and reach higher speeds. The bike also features aerodynamic handlebars and a streamlined seat that reduce wind resistance, allowing the bike to travel faster with less effort.

Class of e-bike

The speed of an e-bike can also be affected by its class. E-bikes are classified into three main categories: Class 1, Class 2, and Class 3. Class 1 e-bikes are limited to a top speed of 20 miles per hour, while Class 2 e-bikes are limited to a top speed of 28 miles per hour. Class 3 e-bikes, like the Astro Pro, can reach speeds of up to 28 miles per hour but also come with additional safety features, including a speedometer and pedal assist system. The Class 3 designation makes the Astro Pro a fast e-bike that is suitable for commuting, touring, and recreational riding.

Comparison with Super 73 S2

When it comes to fast e-bikes, the Super 73 S2 is often mentioned as one of the top competitors to the Astro Pro. The Super 73 S2 is known for its stylish design and powerful motor, which can provide speeds of up to 28 miles per hour. However, there are some key differences between the S2 and the Astro Pro that make the Astro Pro a superior choice in terms of speed and performance.

One difference between the Super 73 S2 and the C3strom Astro Pro is the battery capacity. The S2 features a 960 Wh battery, while the Astro Pro has a 1,040 Wh battery. The larger battery in the Astro Pro provides more power and allows for a longer range, making it a more practical choice for long commutes or extended rides.

The design of the bikes is also different, with the Astro Pro featuring a more aerodynamic and lightweight design that is optimized for speed. The S2, while stylish, has a bulkier and heavier design that may not be as efficient when it comes to speed.

Overall, while both the Super 73 S2 and the Astro Pro are fast e-bikes that offer a fun and convenient way to get around, the Astro Pro has several advantages that make it a better choice for those who are looking for speed and performance.


The speed of an electric bike is determined by a combination of factors, including the motor, battery, design, and class of the bike. Our brand, C3strom, has developed the Astro Pro, a Class 3 electric bike that is known for being fast and efficient. The Astro Pro features a high-performance motor, a long-range battery, and a sleek and aerodynamic design that make it a top choice for those who want a fast and reliable e-bike.

While there are other fast e-bikes on the market, such as the Super 73 S2, the Astro Pro stands out due to its superior motor, larger battery capacity, and more efficient and lightweight design. If you are in the market for a fast and reliable e-bike, the Astro Pro from C3strom is an excellent choice.

Electric bike Correct Riding Position Instruction

The C3STROM ASTRO PRO is one of the best-performing electric bikes on the market. E-bikes are growing in popularity. It is a fast electric bike alternative for individuals who wish to ride smoothly and sustainably. As a class 3 electric bike, it provides a high level of assistance and can travel at speeds of up to 28 mph. But in order to ensure comfort, and safety, and to get the most out of your experience, it’s crucial to comprehend the correct riding position before you begin your e-bike ride.

The ideal riding position is crucial for comfort and stability when using the C3STROM ASTRO PRO. Better visibility, balance, and control of the bike are all made possible by the upright position, which is achieved with a straight back and hands on the handlebars. The wide and comfy seat of the C3STROM ASTRO PRO is designed to make it easy to get into position. Make sure the saddle is level and not inclined with the ground. Place your feet flat on the pedals and make sure they are parallel to the ground. This will help distribute your weight evenly and give you better control over the bike. Remember to maintain a straight back and relaxed shoulders while riding. This will help you maintain good balance and control over the bike, and reduce the risk of injury to your back, neck, and shoulders. Do not forget to keep your hands on the handlebars, with a relaxed grip. This will help you have better control over the bike and make it easier to react to any sudden changes in road conditions.

To maximize your e-bike experience, consider wearing comfortable clothing and shoes that allow you to move freely. Investing in a good quality helmet and protective gear can also ensure your safety while riding.

The Level-3 assistance on the C3STROM’s fast electric bike ASTRO PRO makes it simpler to ride at a high speed. To save the battery and completely appreciate the thrill of riding an e-bike, it’s important to utilize the electric assistance, nevertheless, in a prudent manner. While riding, it offers a lot of assistance. This makes it simpler to ride quickly and reduces the amount of effort required to overcome slopes or the wind. It’s crucial to utilize the electric aid properly, though. The battery may discharge more quickly if you use too much help, and you risk missing out on some of the enjoyment of riding an e-bike.

In conclusion, electric bikes, such as the C3STROM ASTRO PRO and Super 73 electric bike, are a great choice for individuals looking for a quick, environmentally responsible ride. You can guarantee a comfortable and secure ride on your C3STROM ASTRO PRO by understanding the right riding position and making a few easy adjustments.

Why moped-style electric bikes are expensive

Moped-style electric bikes are becoming increasingly popular, but they are also known for being relatively expensive. C3STROM ASTRO PRO sells at $2699. This is because these bikes are not your typical bicycles, but rather a combination of a bicycle and a motorized scooter. The price tag for these bikes reflects the advanced technology and features that are included in the design.

One of the main reasons for the high cost of moped-style electric bikes is the battery. These bikes are powered by rechargeable batteries that need to be able to provide enough power to propel the bike for a certain distance. The cost of these batteries can be quite high, especially for higher-capacity models. For example, ASTRO PRO uses a 1040Wh Samsung battery. Ride all day and through the night with its 78 miles of provided range and fast charging that takes just 4-5 hours.

Another reason for the high cost of moped-style electric bikes is the motor. The motor needs to be powerful enough to move the bike, but it also needs to be compact and lightweight. This requires the use of advanced technology, such as brushless motors and gear drives, which can be expensive. In addition, the motor needs to be reliable and long-lasting, which also adds to the cost.

The frame of a moped-style electric bike is also a factor in its cost. These bikes need to be sturdy and durable, but they also need to be lightweight. The materials used in the construction of the frame, such as aluminum or carbon fiber, can be expensive. The design of the frame also needs to be aerodynamic, which requires advanced engineering and testing.

Another factor that contributes to the cost of moped-style electric bikes is the components. These bikes are equipped with a variety of components, such as brakes, lights, and displays, that need to be of high quality and reliable. The cost of these components can add up quickly, especially for higher-end models. For example, a high-end electric bike might be equipped with hydraulic disc brakes, which can cost upwards of $100 each.

Finally, the brand and reputation of the manufacturer can also affect the cost of moped-style electric bikes. Brands that have a good reputation for quality and reliability will often command higher prices for their bikes. This is because these brands have invested in research and development, and have a proven track record of producing high-quality products.

In addition to the reasons mentioned above, there are also other factors that can contribute to the cost of moped-style electric bikes. For example, the cost of marketing and distribution can add to the overall cost of the bike. The cost of certifying the bike to meet safety and performance standards can also be expensive.

Actually, C3STROM ASTRO PRO offers the highest-performance mopeds at a reasonable price with a fashionable appearance. Visit to discover more about the product. If you want a moped bike to spice up your life, C3STROM is the ideal option.

Despite the high cost of moped-style electric bikes, many people still consider them a worthwhile investment. These bikes offer a unique combination of convenience, efficiency, and style that make them a great option for commuting, running errands, or leisure activities. They are also environmentally friendly, which is important for many people who are concerned about their impact on the environment.

In conclusion, moped-style electric bikes are expensive for several reasons, including the cost of the battery, the motor, the frame, the components, and the brand. While these bikes are not cheap, they offer a unique combination of convenience, efficiency, and style that make them a worthwhile investment for many people. If you’re considering a moped-style electric bike, it’s important to consider all of these factors and choose a model that fits your needs and budget. By doing so, you can be sure that you are getting a high-quality product that will provide you with many years of enjoyment and savings on transportation costs.

Why Choose Electric Bikes

We are thrilled that more and more people are joining the C3STROM Family. Do you now take pleasure in riding and taking in the freedom of the open road? What changes have electric bikes made to our way of life? Remember the exact reasons you picked electric bikes.


Ride more effortlessly

When riding, there are frequently several different road parts. Ordinary bicycles sometimes carry a heavy physical weight while traveling for long periods of time or when facing sloped road portions. Electric bicycles are a great way to address this issue. With electric assistance, we can ride farther and take in more scenery while climbing ramp after ramp more quickly and effortlessly.


More efficient commuting

Imagine that we are set to begin a day worth fighting for when we get up early, enjoy the first cup of coffee of the day, have a hearty meal, and drive to the office. Instead, we are caught in heavy traffic congestion in the flow of traffic. The electric bicycle outside of the automobile sped by the window as you were impatiently awaiting the traffic congestion. An unfinished black Americano sits on the frame’s cup holder, and a dainty black briefcase rests on the back shelf.

Yes, as seen in the aforementioned example, electric bicycles may commute more effectively during times of heavy traffic. Drivers of electric bicycles can travel farther and faster because their motors have more horsepower than those of conventional bicycles. Electric bicycles may also freely navigate some alleyways at the same time.


Better for long rides

Long rides are popular among riders who like taking in the surrounding beauty. The issue of riding tiredness has been resolved by the development of electric bicycles. The burden of large luggage and the weariness of long-distance driving are no longer concerns for drivers. We can go great distances on electric bicycles, and they just need to pack one or two extra batteries. While traveling far away and having fun, there is more energy to take in the beauty along the route.

Perhaps the sensation of freedom is experienced when the driver travels to villages, lakes, farms, and mountains and feels the wind in the distance brush his face. This is an emotion that automobiles cannot convey. Electric bicycles take the role of traditional human-powered bicycles as the finest browsing tool when we cannot ride them to far locations.


People of all ages can participate

People of all ages may join and enjoy riding electric bicycles because of the increased accessibility of these vehicles. When riding a regular bicycle, there is a chance that we may inflict harm on our bodies, including wear and tear on the knees, waist, and other body parts due to excessive riding intensity, and muscles when we are weary. falls, cramping, and other injuries The advent of motorbikes significantly decreased injuries brought on by a lack of physical power and removed strain on the knees and waist. As a result, persons in their middle age and older can engage. They can utilize bicycles despite having weak physical capabilities thanks to motorcycles, which also efficiently protect their bodies.


More exciting and refreshing riding experience

More drivers are interested in having fun while riding rather than only pursuing endurance performance and high-speed experience. There are now several electric mountain bikes available that can ride on various surfaces, have improved possibilities, climb mountains more quickly, and eliminate the need to dismount the bike to push when you’re tired from climbing. People with poor physical condition and little time for training may still enjoy the thrill of riding on the road thanks to electric bicycles.


Low carbon environmental protection

A typical motorbike emits 5.75 pounds of carbon dioxide every 100 kilometers of travel with a fuel usage of 2.5 gallons.

A fully loaded bus typically uses 1.5 liters of gasoline every 100 kilometers, emitting 3.45 kg of carbon dioxide as a result.

About 20.7 kilos of carbon dioxide are emitted by a car that uses 9 gallons of petrol every 100 kilometers.

12 kilos of carbon dioxide are released into the atmosphere per 100 kilometers by an electric bicycle that uses 15 degrees of energy.

For every 100 kilometers traveled, electric bicycles use around 1.2 degrees of power and emit roughly 0.96 kilos of carbon.

It is clear that electric bicycles are not only a practical and effective mode of transportation, but they may also help us considerably cut down on carbon emissions. As a result, we urge more people to join the electric bicycle team, experience the excitement of riding with others, cut emissions, and safeguard the environment, all of which are highly beneficial to human health.

Send us a note if you have any more questions or concerns, and we’ll get back to you as soon as we can. We take great satisfaction in our relationships with our patrons and backers, so we’ll be more than pleased too! We encourage you to check out the following channels, particularly the C3STROM YouTube channel if you want to learn more about C3STROM.





Best moped bike of the year

What an e-bike in the moped-style is. Despite the lack of a clear definition—they are a class that has only lately gained attention as a result of their rising popularity—these e-bikes have certain distinguishing design elements.

Moped-style e-bikes aim to combine many of the comfort and convenience aspects of traditional mopeds with the key e-bike traits of having pedals and a relatively low-powered electric assist motor system. This frequently entails a bench seat (which may also be able to accommodate a pillion passenger, in which case rear footpegs may also be present), tires and suspension made for motorcycles, as well as lighting features similar to those found in automobiles, such as a full-on headlamp or even indicators.

They are exactly that, but why would anyone desire an e-bike in the moped-style? It must be acknowledged that the illusive element of style plays a significant role; yet, there are unquestionably other benefits to moped e-bikes. The motorcycling aesthetic is undeniably a genuine draw for some, while others may be admirers of some of the celebrities that support labels like Super 73, Juiced Bike, and C3STROM.

However, moped-styled e-bikes offer additional, useful advantages. Large tires, suspension, and a long bench seat make these e-bikes more comfortable than many other designs, and characteristics like an upright riding position, well-equipped lighting, and a strong motor with some throttle control may make them seem quite secure in congested city traffic. Unfortunately, they frequently have a weight penalty due to the additional heavy equipment.

Moped-styled e-bikes, like other e-bike categories, will each have their own advantages and disadvantages; some may be better for commuting, others for off-roading, etc.; nonetheless, they have a fun and quirky ride experience that’s difficult to describe but obvious once you start riding a moped-style e-bike. So without further ado, let’s look at the e-bikes that, in our opinion, are now available in the greatest moped style.


How we picked the best moped-styled e-bikes

These moped e-bike selections are the result of many aggregate thousands of hours of riding and carefully comparing performance by our team of professionals from the C3STROM Designer and Development Team.

There are hundreds of e-bikes available, even in a rather specialized areas like moped e-bikes. In order to narrow down the field and determine which moped e-bikes are the best for particular tasks, we utilized our expertise to evaluate the paper specifications of all the competitors and added in our actual riding experience.

Naturally, we gave preference to bikes we’ve personally tested and assessed, but we did include several bikes based only on reputation.

But in all cases, we evaluated the bikes based on a few key criteria, mainly:

  1. Value: What e-bike do you receive for your money? There are several pricey, under-equipped electric bikes on the market today that don’t provide any value. Each bike on this list is reasonably priced in our opinion.
  2.  Extras and components: What else does the e-bike include? Does it have fenders, lights, racks, or bags, and do those extras make sense? Is there anything missing that ought to be there?
  3. Does it provide something distinctive? What makes this bike stand out from the competition in a market flooded with options? Many e-bike categories, especially those at the lower price point, are rife with knockoff companies and e-bikes that don’t really stand out. We’re trying to find those who are.
  4. What was it designed for, according to the manufacturer? How successfully does this bike do the task for which it was intended? Naturally, you are free to ride your bike any way you see fit, but we want to ensure that the e-bikes on our list deliver on their promises.


Best moped bike of the year- ‘fun, stylish, solidly built and powerful’ from Bill Roberson, Forbes

Come see C3STROM ASTRO PRO if you’ve been hunting for the greatest e-bike with a moped-like design for a while. We might legitimately say that the moped and e-bike mania is only getting started. That’s not to suggest that our moped e-bikes don’t have a distinctive appearance.

Due to its long bench seat, lengthy front suspension travel, and enormous volume tires, the C3STROM ASTRO PRO nevertheless has a moped-like look. It sports a bigger detachable battery and a lighter aluminum frame (1040 Wh). Furthermore, the riding stance is more upright.

Even though the ASTRO PRO lacks a rear suspension, its extremely wide, 20″ x 4.5″ tires, high volume, and long travel front suspension make it appropriate for fairly challenging dirt road terrain. Additionally, it offers a setting for unrestricted speed on all surfaces.

It’s as competent as it is entertaining, and the current seat can accommodate a little passenger.

The Class-3 e-bike that comes with the US-spec is capable of 28 mph at maximum power, but there is also an off-road mode that can be activated by turning on the control panel. It has a Class-1 (20 mph pedelec) or Class-3 (28 mph pedelec) mode that may be programmed, as well as an unlimited off-road setting that aids beyond 28 mph (only permissible on off-pavement).


Pro’s Con’s
1. Super comfortable seat that will accommodate two people
2. Fat tires great for light off-roading
3. Off-road mode for faster riding
4. Lighting, fenders, and rack as standard
5. Powerful motor
6. Great value for the quality of components you get
7. Huge range
1. No torque sensor so pedal assist may not be as smooth as some other moped e-bikes
At 94 lbs this is a heavy e-bike. Not a problem when riding thanks to the powerful motor, but you won’t want to run out of battery or lift it up very much

Comparing to Super73 ZX:

1. powerful hydraulic ones rather than the more Cable actuated disc brakes
2. Better value for the quality of components you get
3. Powerful motor and better speed
1.Super73 has a better app control system, which C3STROM will continuously upgrade the functions.   

Compared to Juiced Scorpion X:

1. Heavy, even for a moped-style e-bike at over 100 lbs. (ASTRO PRO 94LBS)  

Hope It will give you more confidence to pick our e-bike, the finest moped bike of the year when we compare some of the most well-known moped motorcycles to the C3STROM ASTRO PRO.

The secret of long battery life-how to make electric bicycles ride farther

E-bikes can typically ride longer and more frequently than regular bicycles, but no one can deny the long battery life! So, how can we make the batteries and motors of electric assistance work as efficiently as possible?

Even the best electric mountain bikes will give you a headache due to battery life if you ride incorrectly or set it up incorrectly. At this time, pay attention to the ten super useful small methods that can extend the range of your electric bicycle ride!


1. Power mode

Please use the “smart” mode of the battery. For example, use a mobile phone to launch the application of the manufacturer of the power-assisted bicycle motor to see how the motor is configured. Simply reduce the power levels or choose one of the preset values. Shimano’s “Explorer” mode, for example, maybe more appropriate for you than its default “Dynamic” preset. For example, many Shimano STEPS users now prefer to use the “Eco” mode for 95 percent of their trips and the low-power “Boost” mode for the remaining 5 percent. Bypass the “Trail” mode entirely. It is also critical to keep your electric bike firmware in top condition by ensuring that you have the most recent software. Typically, it can be carried out using Bluetooth on a mobile phone; it is very simple, and there is no way?


2. Multiple shift gears

Most electric bicycle owners make this mistake, ignoring the transmission. When you can’t step on the pedal, don’t just turn the handle. It is simple to exert pressure on the motor and battery. You must adjust your gear ratio to make the electric bicycle last longer and ride farther. After all, it is still a bicycle that is primarily driven by humans.


3. Pedaling frequency

Any mechanic at a bike shop will tell you that the biggest issue for some e-bike riders is their obsession with Pedaling frequency. This not only consumes more power (causing customers to complain about not getting the advertised mileage), but it also consumes the power system faster, which is not worth the loss.

To keep the motor running at full power, you must step on rather than roll. The pedaling frequency target per minute should be between 70 and 90 RPM. Continue turning the crank to get the most assistance. When the pedaling frequency is reduced, the motor slows down, which is especially inconvenient when climbing steep slopes. Because the wide-range 1x transmission system is ideal for electric bicycles, you must change gears regularly to optimize your pedaling frequency.


4. Tires

Lightweight tires may appear appealing and logical, but they should not be chosen. This is a “false economy” product that will negatively impact your ride. On an electric bike, you’ll use the sidewall more because of the extra weight, and because the rear wheel is harder to get off the ground, it takes more force when it hits rocks and tree roots.

Higher tire pressure and heavy-duty tires are required to avoid frequent sidewall punctures. While weight is one of the influencing factors for range longevity, durability and size must also be considered.


5. Brakes

Don’t skimp on efficient brakes, just like you wouldn’t on tires. Upgrade to four-piston brakes if possible. You’ll improve your power by braking less frequently and only when necessary. And a thousand reminders to check your brake pads for wear frequently before, during, and after a ride, and to always keep spare pads on hand.


6. Chains and Guide Pulleys

A clean, well-lubricated, and free-rolling chain experiences far less resistance than a dirty, poorly maintained chain. And, especially when shifting uphill, the motor can put a lot of strain on the drive train. So, as detailed in the How to Maintain Your Electric Bike article on how to clean your chain, check for wear and tear regularly and keep it well lubricated.


7. Turning

Leaning your e-bike into a turn requires more muscle power, but once your balance and center of gravity are correct, the weight of the bike will maintain consistent traction. To get a longer ride, avoid bouncing between turns and instead take a more cautious approach. Try pedaling around corners while keeping the motor running on slight uphill or flat gentle turns. If you think you’re going too fast, slow down but keep the cranks turning. We discovered that this continuous and calmer motion consumes less energy than braking and then skidding.


8. Climbing a hill

Remember to shift into neutral before pressing the power button. Again, high cadence is essential. Find a comfortable seat that allows you to keep your weight on the rear wheel. An e-front bike’s wheel is less likely to lift, allowing you to sit up straighter and concentrate on traction. Shift down through the flywheel to keep the motor running at a high cadence. Keep your gaze on the horizon; don’t be concerned about a slick course; instead, concentrate on maintaining power.


9. Downhill

Don’t forget to switch to eco mode for the downhill. Even if you believe it makes no difference because you won’t be pedaling much at this time. But it works, and over the course of a 30-40km ride, it all adds up. Don’t think about accelerating sharply once the speed exceeds the speed limiter (25kph/15.5mph). Instead, keep a steady cadence and maintain your impulse in the turns. Rather than pedaling, accelerate, as the bike will not accelerate without this assistance. Don’t be concerned about roots and rocks; you won’t be able to jump up like a normal bike, and you’ll take them out anyway. Consider going bigger and wider!


E-bike Regulations of the United States 

The United States E-bike regulations

Ebikes are a fun, easy and convenient way to get around. They are perfect for those who need a vehicle with speed but can’t stand the idea of being tied down to a car all the time.  It’s such an exciting experience to get your hands on a new piece of technology like this!

But it’s important not to get too ahead of ourselves in all the excitement!

There are some important things you should know before you begin your ebike journey. One very important one is ebike regulations. As you might know, different countries have different regulations for ebikes. It’s important to know what kind of ebikes you can drive in your area, as all areas are different.

Here we explain the key things you need to know about all things regulations when it comes to ebikes.

Most of our customers are in the United States, which has quite a complicated legal arrangement when it comes to ebikes. Here we will give you the key facts regarding federal and state legislation when it comes to ebikes.


There are a few important federal regulations regarding ebikes. First, the motor must be less than 750w. To comply with this standard, the ASTRO and ASTRO PRO use a BAFANG 750w hub motor.

Second, the top speed using the throttle must be capped at 20mph when using the throttle alone. Notably, the law does not specify the maximum speed that the bike can go when using a combination  of peddling and the throttle. In fact, the Consumer Product Safety Commission specifically clarified this issue by stating that e-bikes can travel faster than 20mph when using pedals and the throttle.




There are also some regulations that vary by state. The state regulations mostly focus on whether ebikes are classified as scooters, mopeds or traditional bikes.

Only 44 states have definitions for ebikes in their legislation distinguishing them from other vehicles. The other 6 states classify them simply as mopeds or motor vehicles, meaning the same rules that apply to mopeds or motor vehicles apply to them.

In 26 states, ebikes are categorized ebikes into 3 standard classes. The remaining 18 states use unique classification systems.

States using the standard 3 classes:

Arizona, Arkansas, California*, Colorado, Connecticut, Florida, Georgia, Idaho, Illinois, Indiana, Maine, Maryland, Michigan, New Hampshire, New Jersey, Ohio, Oklahoma, South Dakota, Tennessee, Texas, Utah, Virginia, Washington, West Virginia, Wisconsin, Wyoming

States using unique definitions:

Hawaii, Oregon, Nevada, Montana, Minnesota, Idaho, Nebraska, Kansas, Kentucky, Mississippi, North Carolina, South Carolina, Washington DC, Delaware, New Jersey, Pennsylvania, Rhode Island

States with no definition:

North Dakota, Missouri, New Mexico, Alabama, Massachusetts, Alaska

The 26 states have pretty much the same definitions and regulations for the different classes of ebikes. The only exception is *California, where all ebikes cannot have a throttle. In all the other 25 states, including New York, a throttle is permitted.

Things get a bit trickier with the states that have unique definitions. Each one is different and it’s worth looking up the specific legislation of these states if you need to drive an ebike there.

For instance, Kentucky and Mississippi treat all ebikes as traditional bicycle that can be used freely on bicycle and multi-use paths. No license, registration or insurance is required. Whereas West Virginia does not recognise class 2 ebikes, only allowing the use of class 3 and class 1 ebikes.

New Jersey has a more complicated two-tier system, where ‘Low Speed Electric Bicycles’ that go below 20 mph (like ‘Class 1) are treated as traditional bikes, while ‘Motorized bicycles’ that can go between 20mph and 28mph are treated more like motor vehicles that require a driver’s license, registration, insurance, and a helmet.


What about the ASTRO and ASTRO PRO?

C3STROM’s ASTRO is a class 3 bike. It has a BAFANG 750W motor, which is the maximum wattage allowed for this class. It has a setting with an initial speed limit setting of 28mph, along with a pedal assist system (PAS) so you can switch between riding it like a normal bike and riding it fast. Therefore, when riding in the initial mode, license and insurance is not required.

It also has another setting called ‘OFF-ROAD’ mode which can be used off-road at a higher speed. As the bike is designed for speed-seekers, we decided to include this off-road mode for those who enjoy the thrill of riding.

For our future EU customers, we have a different riding mode called ‘pedelec mode’. Every time the user starts the bike, it will be set automatically in pedelec mode with a 25km/h speed limit. In pedelec mode, when a speed of 25km/h is reached, the pedal assistance cuts out.


What about licenses and insurance?

If the bike comes under the standard three tier classification system used in the 26 states mentioned above, then generally it does not need a licence and insurance. As for the 14 states with unique definitions, it varies state by state. Generally, ebikes are classed as traditional bicycles or class 3 ebikes in these states so will not require licences and insurance with the exception of New Jersey (see above). But make sure to check your states guidelines for more details, as legislation is often nuanced in these states and subject to frequent changes and revisions.

Ebike Classes of the United States

US ebike classes

When you first discover ebike, the whole concept just seems fascinating! An electric bike that can function both like normal bike and a motor powdered vehicle just seems convenient and modern. You might very quickly get carried away looking for your dream bike.

It can get a bit confusing, though, once you start thinking about what kind of vehicle an ebike is though. You might be thinking is it a motorcycle, a traditional bike or somewhere in between? More importantly, what are the rules that apply to an ebike?

Luckily, in most places there is classification system that helps deal with this problem.

In the United States, the state law of 26 states divides ebikes into three different classes. Each class of ebike caters to a different type of user with certain needs, but also come with a different set of regulations governing their use. Which class a user wants to choose will be mainly based on whether they want to travel in urban or rural environments. It will also depend on how fast the rider needs the bike to go and if they need to be able to use the bike in all the places a traditional push bike can be used.  


ebike classes in the US

In twenty-six states of the US, there are three different classes of ebike. There are eighteen states that use unique classification systems. There are five states, there is no legal definition for ebikes (meaning they are classed as other types of vehicles).

Here are the 26 states that use the standardized three tier classification:

Arizona, Arkansas, California, Colorado, Connecticut, Florida, Georgia, Idaho, Illinois, Indiana, Maine, Maryland, Michigan, New Hampshire, New Jersey, Ohio, Oklahoma, South Dakota, Tennessee, Texas, Utah, Virginia, Washington, West Virginia, Wisconsin, Wyoming

Each class defines ebikes by three things: (1) if they have a throttle, (2) how fast they can travel and (3) if they have a PAS (Pedal Assist System, which gives an extra electric ‘boost’ to the bike when you pedal).


The first class of ebike has a top speed of 20mph. It does not have a throttle, so it relies totally on the PAS for power. It’s best to think of this kind of ebike as similar to a traditional bike with just a little bike of electrical assistance, as it cannot go to very fast speeds. These ebikes are treated by a lot of states like traditional mountain or pavement bikes, so they are most suited to dedicated bike lanes, roads, and trails.


The second class of ebikes also has a top speed of 20mph. However, it also has a throttle used in combination with the PAS. It can’t go any faster than the ordinary class one, but it is a bit easier on the rider as they can choose if they want to use the pedals. Again, these ebikes are often treated like normal traditional bikes and can often go wherever those ones can, but it depends on the state. Some states like New York and Michigan State have restrictions.


The third class of ebikes has a top speed of 28mph. There is also another regulation on the motor for this class – it must be less than 750 watts.

Whether or not it is allowed a throttle depends on the local regulations. In somewhere like California, for instance, throttles are not allowed. Whereas in New York, a throttle is totally fine. It also has PAS, so the rider can switch between PAS and throttle.

These ebikes are often more suitable for roads and on-road bike lanes, but often cannot be used on standard off-road bike lanes and trails because they are too fast.


What class is our ASTRO and ASTRO PRO?

C3STROM’s ASTRO is a class 3 ebike. It has a BAFANG 750W hub motor, which is the maximum wattage allowed for this class of bike. Initially, when you turn on the bike, the maximum speed is capped at 28mph with pedals and 20mph on throttle only – which is the maximum speed for this class. When riding in this default riding setting, the bike fits the standards of the class 3 ebike category mentioned above in this article, meaning the bike does not require a license or insurance (in most states).


As the bike fits the requirements for a class 3 ebike, legally, that means it is in a special class of vehicles which has a unique set of regulations that apply to it. As mentioned above, the rules and regulations vary by state; some states do not even use this classification system and others use a modified version of it. Subsequently, it’s important to check rules and regulations for ebikes in your own state before riding. In most states, however, the ASTRO and ASTRO PRO will be treated as a special type of vehicle that is closer in legal status to a traditional bike than a motor vehicle like a car or motorcycle. That’s why you won’t need a special license or insurance in most cases.

For our future EU customers, we will have a different default riding mode called ‘pedelec mode’. In pedelec mode, when a speed of 25km/h is reached, the pedal assistance cuts out automatically. The bike will be in line with EU legal requirements for ebikes, as the requirements specifically state that bikes must not go beyond 25mph with pedal assistance. Therefore, the bike will not require any special license or insurance.

How many degrees of slope can the bike climb

How many degrees of slope can you climb?

This is a topic that is prone to bragging solitaire, and the fact that people frequently confuse two different units of slope measurement makes this topic contentious.

We join Rhett Allen, a physics professor at Southeastern Louisiana University, in this article to discover the limits of bike climbing.

The first definition of slope is the steepness of the surface unit; typically, the slope I is the ratio of vertical height h to horizontal distance l. Both percentage and degree are expressions of slope; the percentage formula is vertical height / horizontal distance * 100 percent, and the degree formula is tanα = vertical height / horizontal distance.

Consider the following examples.

A highway has a maximum slope of 5%, 3°.

The maximum slope of a parking garage is 15%, 8°.

The climbing capacity of a car is 36%, 20°. Certain off-road vehicles can climb 60%, almost 30°, which is the slope of stairs in an ordinary building.

100% slope is 45 °, almost a cliff feeling.

How steep a hill can be climbed does not depend on power.

“If you don’t care about the speed of climbing, say a fraction of a meter per second, you can keep climbing with very little friction. It’s like lifting a heavy object with a pulley that only requires a small motor.”

Rhett Allain is a physics professor at Southeastern Louisiana University who writes a physics science column for Wired magazine.

In theory, as long as the right gear ratio is found, a very small amount of power is sufficient to sustain the climb.

However, a very small gear ratio requires the rider to turn his legs like crazy, maintain a very high pedaling frequency, and if he is not careful, he will fall off the bike because it is too slow.

When combined with the actual situation, the climb’s speed could not be too slow, so Professor Allan set the climb’s minimum speed to walking speed, 2 meters per second. Then he performed extremely complex calculations in a very professional physics manner, eventually determining that 40 percent gradient is the maximum gradient that the bike can challenge, at which point it must do 422 watts of work, a power value that professional cyclists almost always achieve.

If you want to split hairs and see how far the slope goes, no matter how much power we output or what gear ratio the bike has, we can’t go up another meter, and the center of gravity becomes a keyword.

The only thing you can’t get past is the center of gravity.

We all know that when the slope steepens to a certain point, we fall backward.

We fall back when the vertical extension of the rider’s center of gravity with the ground is not between the contact points of the two wheels and the ground.

And, more specifically, where is the cyclist’s center of gravity?

Keith Bontrager, an elite-level Bikefitting mechanic, says this is difficult to explain conceptually, but he generally sets the center of gravity 3 to 4 cm behind the pedals when the crank is at the nine-o’clock position on the cassette side.

To determine the point at which the cyclist falls back, we must perform a trigonometric calculation: Tilt angle = 90° – [Tan-1 (height of the center of gravity horizontal distance from where the rear wheel lands to the center of gravity)]

This formula yields a critical point of 25.8°, corresponding to a 48 percent gradient. Of course, this is true if the rider remains seated in the car seat throughout the climb.

When the angle becomes too steep, we all have to leave the cushion and rock up to two steps.

If the center of gravity for this stance rocker is recalculated, a new critical point of 41°, or 86.9 percent, is obtained. This appears to allow the rider to conquer any crag, putting off-road jeeps to shame.

However, one factor, the friction between the tires and the ground, is significantly underestimated in this set of calculations. Anyone who drives knows that when the slope is too steep, the tires slip, and bicycles are no exception.

The first disappointment is always the tire friction.

Hristian Wurmbäck, a product manager for Maersk tires, states unequivocally that tire friction will be the first thing to fail when climbing steep hills.

“The coefficient of friction of a complex compound such as rubber is difficult to predict: is it dry, is it wet, how dry is it, how wet is it… You’ll never find the perfect one that can be used in every situation.”

“From asphalt to wet mixed soil surfaces, the coefficient of friction performance of the tires ranged from 0.3 to 0.9.”

Professor Allan optimistically set the coefficient of friction at 0.8, but after applying his complex formula, the friction of the tires could only support a 38.7° climb, or roughly 80% of the grade.

However, the estimate of 0.8 is always too optimistic, considering that 30% of road construction ramps are made of concrete, not asphalt gravel roads, and the coefficient of friction of rubber drops to 0.6 during movement and applying Professor Alain’s formula, the slope obtained is approximately 60%.

Even if you’re confident you have enough power, the right sizing ratio, and exceptional center of gravity control, you’ll be beaten by a 60% steeper grade because your tires will let you down unless you keep a bottle of 502 in your cycling suit at all times.

The good news is that an HC climb (short for hors CATégorie in French, meaning “outside the class” and denoting the most difficult climb) is only a 10km or more climb with an average gradient of 7.5 percent, according to the UCI.