A letter from Casey Evans to Electric Bike Technologies, makers of the E-BikeKit™ electric bike conversion kit system. This one of kind adaptive electric stroller was designed by students from California State University-Sacramento using two 500w direct-drive hub motors controlled by a single E-BikeKit system. Thank you for enabling me to take my daughter hiking! My name is Casey Evans and my daughter, Montel, was born with a very rare...
The distance range of an electric mountain bike refers to the distance you can travel on a single battery charge given a specific set of circumstances. All of the e-bikes we tested have roughly the same battery storage capacity, but outside variables like rider weight, pedaling input, terrain, trail conditions, and weather conditions may all affect the length of time or distance that a battery charge will last. To compare the distance range of the four models in our test we took the bikes out in their highest support setting and did out and back laps on the same trail until the batteries ran down from fully charged to completely dead. When we finished we recorded the distance and vertical gain that each model was able to complete and easily and objectively determined our winner.
This article first appeared in Electric Bike Report in June of 2013. Since then, we’ve made some changes to our motor selection - our Direct-Drive motors are now all High-Torque 6x9 wound, so they run slower (approximately 15mph at 36v or 20mph at 48v), and our Geared Motors have been replaced by a 500w version, (approximately 20mph at 36v or 28mph at 48v). The Direct-Drive is now our Heavy-Duty motor and the...
With almost as many awards as technical features, it’s no secret why we opted to include HaiBike’s SDURO HardNice 4.0 in the list. First and foremost, this sleek aerodynamic ride doesn’t even initially come off as an electric mountain bike. That is until you experience first-hand the integrated Yamaha PW Drive Unit offering dynamic support and a top speed of 20 mph. Also, the bike features a shock-resistant skid plate that works to protect the motor from harm, and a Yamaha LED display that’s small yet robust and works to keep you informed on the bike’s status and functionality.
Many many thanks for your wonderful customer services, and a wonderful bike you had prepared for me. Now, this bike becomes my physical therapy machine and a commuting transportation in the busy streets of San Francisco. Truly, the R15 upgrade is a very powerful e-bike. I can practically say that this bike is a hybrid of motorcycle and bicycle. The… Read more ““Just no comparison””
All models of the Turbo Levo use a frame made from M5 aluminum alloy, with the motor and removable battery integrated inside. The frame and fork use 148mm (rear) and 110mm (front) spacing. Specialized 6Fattie Purgatory (front) and Ground Control (rear) 3-inch wide tires are laced to 38mm Roval Traverse rims. Rear stays and pivots are beefed up to handle the additional weight (48.5 lbs) and torque, and bridges are added to the stays, over the non-motorized Stumpjumper. The front fork is a RockShox Yari XC with a 15mm thru-axle. The 135mm rear travel is provided by a custom Fox Float Performance DPS shock with automatic sag adjust.
Functioning as their premier product, the HPC Revolution took over two years and five prototypes to get right. What’s left is a hand-welded electric mountain bike made right here in the United States featuring a 6061-T6 aluminum frame that weighs only 13 pounds and power levels upwards of 6,000W making it capable to reach speeds of 60 mph. You’ll also find its 203mm travel RockShox Boxxer World Cup Fork come in handy while off-roading as well as its Magura MT7 quad piston performance brakes when traveling at close to highway speeds.
Cyclocross demands a lot from both bike and rider, and the CruX has been engineered to give the precise and efficient performance needed to win races, and the durability to win them every weekend. The frame's geometry and character has been created with input from some of the world's most accomplished racers, making for an agile, easy-to-shoulder bike that is as fun to ride in a World Cup as it is in the local woods.
In a parallel hybrid motorized bicycle, such as the aforementioned 1897 invention by Hosea W. Libbey, human and motor inputs are mechanically coupled either in the bottom bracket, the rear wheel, or the front wheel, whereas in a (mechanical) series hybrid cycle, the human and motor inputs are coupled through differential gearing. In an (electronic) series hybrid cycle, human power is converted into electricity and is fed directly into the motor and mostly additional electricity is supplied from a battery.