1. M

    Chain/Sprocket seizing

    I have an old beach cruiser I’ve been riding for a month with the “80”cc bike engine kit attached. Let me be clear, my alignment and chain size are fine. The engine also runs smooth as butter. The problem started two days ago and it started as a light squeak which goes away after running the...
  2. B

    Grinding/Squealing and then smoke

    Hey Guys, Just installed a Grubee GT 5 motor on my bike. Getting some grinding/squealing sounds coming from near the motor sprocket, but only when the clutch is engaged. As soon as i open the clutch the niose goes away. The motor is still almost new (maybe has 3/4 a mile on it as the niose...