Hi good day. Information on utube is only basic solusion on basic problem. We buy 6units hibike for my bike bodies. We learn that its more fun using e-bike and we enjoy the long trail without muscle stress and more good in heart. After using e bike more than 1year.. every Thursday our regular bike trail with my bike bodies. I one year. We have incountet erors. But we fix by ourselves. Even cleaning entire bosch motor, change bearing when we hear some noice. We already familiar on little basic problem of bosch motor. We stock parts that is very common worn-out. All size of bearing inside the bosch motor, and the side switch. Now we usually put cover. We use the balloon rubber to protect from water. The switch is not use for heavy rain.