The function of the rear derailleur is to move the drive chain from one gear sprocket to another. The smaller sprockets on the gear cluster produce higher gear ratios. Pedaling in the higher gears requires greater pedaling effort, but takes you a greater distance with each revolution of the pedal cranks. The larger sprockets produce lower gear ratios. We have a huge customer base for electric bikes in Kent. Unless it goes past a certain speed limit or has specific characteristics , then in that case it's more like a moped or a motorcycle and it would require a license. Sign up for a Slickdeals account to remove this ad. LIMITED WARRANTY This Limited Warranty extends only to the original retail purchaser, who must produce proof of purchase in order to validate any claim. This warranty is not transferable to anyone else. The mechanism uses a long bolt with an Adjusting Nut on one end, and a lever operating a cam-action tensioner on the other. With the quick release lever in the open position, insert the front wheel into the open ends of the fork. ASSEMBLING YOUR BIKE PREPARATION It is important that you read this owner’s manual before you start to assemble your bicycle. Check to make sure no parts are loose on the bottom of the carton. It is amazing for what you get at this price. The battery alone costs more than this. I’ve purchased 5 of these and all 5 bicycles came without any issues. The easy to use handlebar mounted display allows the rider to select the level of assistance required. Some riders may prefer to have a small amount of assistance on the flat and increase that for hills and headwinds. This means unlike previous programs, a scooter can’t just be left anywhere, as the rider will continue to be charged unless they park in one of those spots. With so much activity, members of city council had questions about potential issues of parking and traffic obstruction. A 7-speed Shimano transmission may be low-end, but it is at least a name-brand component. And the mechanical disc brakes are likely plenty for a 250W bike that isn’t going to get up to 20 mph (32 km/h) very quickly. Cheaper mid-drive electric bikes tend to opt for Chinese-made mid-drive motors like those from Bafang, Truckrun, Tongsheng, and others. Our shop and showroom is based in Wealden Forest Park, beside Blean Woods.