That extra revolving weight makes them difficult to move if pedalling without electrical assistance, so the bike's original unpowered wheel needs to swapped back in when using the bicycle in non -e-bike mode. The whole system — including both the permanently-mounted bits and the power pack — weighs 3. The handlebar bracket holds the easy-fit electrical connections, so you just slide it in and out of the mount without unhooking plugs and cables.

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Over , people receive our email newsletter See the stories that matter in your inbox every morning Your Email. Shea Nyquist's home-made electric land speed attempt. Given that you can fit the relatively inexpensive system to the majority of existing bikes with little fuss makes the Swytch system very attractive.