Suitable for bicycles: road bikes, off-road bikes (use road tire), city bikes, folding bikes. Need 6 4CM space to install. It may take some DIY to send a photo of the bike for confirmation. B70 Battery size: 70 210MM. Tire tread pattern needs to be continuousRecommended road tires and city tires.
B70 bottle 25V 9.6ah battery. Speed: The maximum speed is 27 mph (pedaling). Cycling mode: 2 riding modes, ECO and Sports. The electronic clutch is a virtual clutch. The way of working is that the motor is not separated from the tire (not through mechanical parts) and the electronic is used to eliminate the resistance of the motor.Manually separate the motor from the tire only when the booster is not in use. This way of working is a revolutionary improvement to the friction booster, unlike other similar products. Electric Clutch: Qiroll's electronic clutch technology ensures a very stable drive. It comes into contact with the tire without resistance and can enter the operating state quickly and steadily. Mechanical Clutch: The adjustment knob separates the motor from the tire when the battery is completely depleted or needs to be self-riding. Flexible use: The booster is not something that can't be changed and can be easily removed without using it.
With electronic clutch technology, installation and adjustment is very simple. Reliability: The second generation of motors has a larger margin and the motor life is also very long. In extreme cases, the internal controller actively cuts off the power to ensure safety. Reliable system: QR-E components are designed for friction assist. After years of testing and market feedback, they are reliable, stable and easy to install.
Passed safety certification, can be sent to Europe. The item "Electric Bicycle E-BIKE Conversion Kit QiROLL Friction Drive QR-E MUTE+ B70" is in sale since Monday, June 8, 2020. This item is in the category "Sporting Goods\Cycling\Bicycle Components & Parts\Electric Bicycle Components".The seller is "johnqr" and is located in shanghai. This item can be shipped worldwide.