Reviews

Siemprenbici, off-road mid drives from Spain

This E-bike is designed to be very light, and every design choice that was made has been carefully considered to ensure that the final product remained very light. This is a very strong full-suspension frame that is made from carbon fiber, so there is no way to make something like this affordable…it is a premium product that will be expensive. The drive system provides a modest 600W of assistance. Most countries in the European Union (EU) have a 250W power

This E-bike is designed to be very light, and every design choice that was made has been carefully considered to ensure that the final product remained very light. This is a very strong full-suspension frame that is made from carbon fiber, so there is no way to make something like this affordable…it is a premium product that will be expensive. The drive system provides a modest 600W of assistance. Most countries in the European Union (EU) have a 250W power

 

Yamaha YPJ-01, a light mid-drive road bike

Yamaha was one of the early adopters of electric bikes. In fact, they invented the term “PAS” in 1993, which stands for Pedal Assist System. This is where the rider doesn’t use a hand-throttle, but by simply pedaling with your feet, the bike will add some power. Depending on the level of power-assist you dial-in, you can be going very fast with almost no physical strain.     PAS systems are not only popular in many parts of the world,

Yamaha was one of the early adopters of electric bikes. In fact, they invented the term “PAS” in 1993, which stands for Pedal Assist System. This is where the rider doesn’t use a hand-throttle, but by simply pedaling with your feet, the bike will add some power. Depending on the level of power-assist you dial-in, you can be going very fast with almost no physical strain.     PAS systems are not only popular in many parts of the world,

 

Qoros eBIQE, Exotic Concept E-Bike

Qoros has revealed a new high-performance electric bike, and if it looks vaguely similar to the GreyP G-12, there is a reason for that. We haven’t had a chance to write about the GreyP E-bike yet, but the eBIQE is breaking news right now (that is related to the GreyP), so we will tell you about the eBIQE first. We wrote about the Greyborg Warp Builder’s frame kit a few months ago, and during that research, we became familiar with

Qoros has revealed a new high-performance electric bike, and if it looks vaguely similar to the GreyP G-12, there is a reason for that. We haven’t had a chance to write about the GreyP E-bike yet, but the eBIQE is breaking news right now (that is related to the GreyP), so we will tell you about the eBIQE first. We wrote about the Greyborg Warp Builder’s frame kit a few months ago, and during that research, we became familiar with

 

BMW announces a new E-bike for 2014

BMW produced 200 small folding electric bikes in 2012 as part of a public relations campaign about their new electric concept car, the i3. You could fit two of the folding i-Pedelecs in the back of the i3, with the idea that you could drive the i3 from your home to a car-park, and then ride the i-Pedelecs the final few miles to work, to the train station, or to a weekend picnic.     The i-Pedelec was well-designed, but

BMW produced 200 small folding electric bikes in 2012 as part of a public relations campaign about their new electric concept car, the i3. You could fit two of the folding i-Pedelecs in the back of the i3, with the idea that you could drive the i3 from your home to a car-park, and then ride the i-Pedelecs the final few miles to work, to the train station, or to a weekend picnic.     The i-Pedelec was well-designed, but

 

Qulbix Raptor, Offroad Hot Rod Electric Bike

The Qulbix Raptor is a high-performance E-bike frame that is made to allow a very large battery pack, and a very high-powered rear hub-motor. We’ve been wanting to write about the Raptor for some time, and since they just recently changed their company name from Torque to Qulbix, that makes this month a good time to finally delve into the details. Note: the “Qulbix” name was developed to have something that is very different than any other name out there.

The Qulbix Raptor is a high-performance E-bike frame that is made to allow a very large battery pack, and a very high-powered rear hub-motor. We’ve been wanting to write about the Raptor for some time, and since they just recently changed their company name from Torque to Qulbix, that makes this month a good time to finally delve into the details. Note: the “Qulbix” name was developed to have something that is very different than any other name out there.

 

Surain Ezekiel, off-road Electric Bike from Belgium

A friend just sent me a link to this new E-bike, from Surain in Belgium (near the northern border of France). Sooner or later, this interesting off-road E-bike will be compared to a Stealth Fighter, and we will be looking for information about the details to see how it stacks up. These guys are familiar with the level of performance needed to make an E-bike significant, because they also make an electric motorcycle. They are off to a good start

A friend just sent me a link to this new E-bike, from Surain in Belgium (near the northern border of France). Sooner or later, this interesting off-road E-bike will be compared to a Stealth Fighter, and we will be looking for information about the details to see how it stacks up. These guys are familiar with the level of performance needed to make an E-bike significant, because they also make an electric motorcycle. They are off to a good start

 

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 limited to 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 (like 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

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 limited to 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 (like 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

 

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