Components

High Current Batteries that are NOT LiPo

High performance requires high amps, but LiPo batteries can be dangerous for someone who is inexperienced with them. LiPo is capable of putting out VERY high current (the C-rate), and if you are building a racing E-bike, they are simply the best choice. A LiPo pack will be smaller, lighter, and will put out more peak and continuous amps than any other pack you can buy. The problem is that…for E-bikers who want something that is much safer, but has better performance

High performance requires high amps, but LiPo batteries can be dangerous for someone who is inexperienced with them. LiPo is capable of putting out VERY high current (the C-rate), and if you are building a racing E-bike, they are simply the best choice. A LiPo pack will be smaller, lighter, and will put out more peak and continuous amps than any other pack you can buy. The problem is that…for E-bikers who want something that is much safer, but has better performance

 

10 Mid Drive Kits for DIY Electric Bikes

Some of the most refined electric bikes on the market are mid drives. And until recently, if you wanted a mid drive electric bike you were stuck buying an under-powered and overly-priced 250-watt Euro electric bike. Or…if you wanted a powerful bike, your only choices then were a $10,000 plus USA bike (either the Optibike or the Hanebrink). Recently, several notable mid drive kits have come onto the market which allows someone on a budget to build a mid drive

Some of the most refined electric bikes on the market are mid drives. And until recently, if you wanted a mid drive electric bike you were stuck buying an under-powered and overly-priced 250-watt Euro electric bike. Or…if you wanted a powerful bike, your only choices then were a $10,000 plus USA bike (either the Optibike or the Hanebrink). Recently, several notable mid drive kits have come onto the market which allows someone on a budget to build a mid drive

 

Cromotor, Monster Hubmotor for Electric Bikes

Zvonimir is an engineer who lives in Croatia, between Italy and Greece on the beautiful Adriatic Sea (ES member HAL9000V2.0). In a recent story, we told our readers how he developed the Greyborg Warp frame, so builders could have the option of an electric bike that was heavy-duty, and could also hold the largest possible battery volume. It is a big success with over 200 frames sold worldwide to date. But Zvonimir doesn’t just design things by using computers, he

Zvonimir is an engineer who lives in Croatia, between Italy and Greece on the beautiful Adriatic Sea (ES member HAL9000V2.0). In a recent story, we told our readers how he developed the Greyborg Warp frame, so builders could have the option of an electric bike that was heavy-duty, and could also hold the largest possible battery volume. It is a big success with over 200 frames sold worldwide to date. But Zvonimir doesn’t just design things by using computers, he

 

AstroFlight 4535, their largest motor yet, 15-kW / 20-HP

AstroFlight is a maker of high-end RC motors and components for RC-helicopters and model planes. Their headquarters are located in Irvine, Southern California. This month they have announced the

AstroFlight is a maker of high-end RC motors and components for RC-helicopters and model planes. Their headquarters are located in Irvine, Southern California. This month they have announced the

 

GNG Gen2 Mid-drive Kit Review

May 1, 2013, written by Ron/Spinningmagnets I haven’t written about the GNG Gen2 drive yet (It’s been out for about a year), because I was waiting to hear about which parts needed upgrading, what the actual performance was, and also because…very few people had bought this kit (so the available info was scarce). Quite a few buyers who have heard about the GNG kits opted for the 1,000W-2,100W  big-brother kit (article about the GNG 1,000W here), that has proven itself

May 1, 2013, written by Ron/Spinningmagnets I haven’t written about the GNG Gen2 drive yet (It’s been out for about a year), because I was waiting to hear about which parts needed upgrading, what the actual performance was, and also because…very few people had bought this kit (so the available info was scarce). Quite a few buyers who have heard about the GNG kits opted for the 1,000W-2,100W  big-brother kit (article about the GNG 1,000W here), that has proven itself

 

BionX Hub Motor Kit Review

The BionX is  the best selling hub motor kit in the United States, and probably  the world. The Bionx is not only sold as a kit, but many manufacturers use it as a turn-key solution to very quickly bring a quality ebike to market. These manufacturers have included, Trek, Ohm,  Smart and Grace.  Unlike most kits, the BionX is designed and manufactured not in China, but in Ontario Canada. At least some of (if not most of) the components of the BionX kit

The BionX is  the best selling hub motor kit in the United States, and probably  the world. The Bionx is not only sold as a kit, but many manufacturers use it as a turn-key solution to very quickly bring a quality ebike to market. These manufacturers have included, Trek, Ohm,  Smart and Grace.  Unlike most kits, the BionX is designed and manufactured not in China, but in Ontario Canada. At least some of (if not most of) the components of the BionX kit

 

GNG; an affordable 1,000W Mid Drive Kit

We have waited to write about the GNG kit because it proved to be immediately popular (electricbike.com’s leader Eric stumbled across the new GNG site in Aug 2012, about six months ago), and the inevitable upgrades that endless-sphere builders added were rapidly defining the strengths, weaknesses, and limits of this handy kit. Bottom-Bracket (BB) drives have really taken off this last year, and for good reason. The prices for the basic parts have come down, and the selection has improved too. Part

We have waited to write about the GNG kit because it proved to be immediately popular (electricbike.com’s leader Eric stumbled across the new GNG site in Aug 2012, about six months ago), and the inevitable upgrades that endless-sphere builders added were rapidly defining the strengths, weaknesses, and limits of this handy kit. Bottom-Bracket (BB) drives have really taken off this last year, and for good reason. The prices for the basic parts have come down, and the selection has improved too. Part

 

Torque Sensors on Electric Bikes

A torque sensor is a type of throttle that determines how much juice to feed the motor based on how hard the rider is pedaling. This is different from a cadence sensor which measures simply how fast you are pedaling. Cheap cadence sensors are what can be found on most pedal assist system (PAS) bikes on the market today. When done right, a torque sensor can make you feel bionic when you ride your ebike. It allows for a more

A torque sensor is a type of throttle that determines how much juice to feed the motor based on how hard the rider is pedaling. This is different from a cadence sensor which measures simply how fast you are pedaling. Cheap cadence sensors are what can be found on most pedal assist system (PAS) bikes on the market today. When done right, a torque sensor can make you feel bionic when you ride your ebike. It allows for a more

 

Recommended E-bike Vendors 2012

The electric bike builder marketplace is full of cottage industries.  This is a list of vendors for people who are considering building an electric bike themselves.  The shops below are owner operated with at most   a few employees.  Every vendor on this list is known to be reputable and knowledgeable. This list is current as of Summer  2012.  We will add and take away names off this list as the industry develops.  As of this writing these are the big

The electric bike builder marketplace is full of cottage industries.  This is a list of vendors for people who are considering building an electric bike themselves.  The shops below are owner operated with at most   a few employees.  Every vendor on this list is known to be reputable and knowledgeable. This list is current as of Summer  2012.  We will add and take away names off this list as the industry develops.  As of this writing these are the big

 

Three 250 watt hub motors; Cute, Bafang, and Bionx

250 watt hub motor are so cool and nifty looking, they made it on our  top 10 list of electric bike porn. Here we will look at  three of the better known types of mini 250 watt hub motors, although most electric bike builders and kit providers do not specify which motors they are using.   Most hub motors are made in China, including the 3 main types listed below. For more information regarding 250 watt hub motor, read our

250 watt hub motor are so cool and nifty looking, they made it on our  top 10 list of electric bike porn. Here we will look at  three of the better known types of mini 250 watt hub motors, although most electric bike builders and kit providers do not specify which motors they are using.   Most hub motors are made in China, including the 3 main types listed below. For more information regarding 250 watt hub motor, read our