New user in Clearwater, Florida. My name is Rich. 61 yo retired male. I just purchase a zm 61cc hand crank motor kit from bikeberry.com. I plan on installing on a 7 sp Schwinn beach cruiser. Any help or tips would be greatly appreciated. I previously owned an electric currie motor kit installed on a regular mountain bike and had problems with the motor breaking spokes. Any one having this problem with zm kit ??? Thanks in advance for any tips...