Re: whats the most quiet and reliable engine for my bike?
Mid-drive electrics can be kinda noisy, low rpm hub motors are generally almost silent. Mid-drive allows an experience more like a gas bike if you have gears though. Some of the motors sound pretty cool spooling up too, lol.
KTM50 Schwinn Chopper - 6000W E-Motard - 52cc Auger BMX - 9sp+CVT 52cc Cagllari Moped