Heard a thunk earlier this week just after crossing a speed hump on my way to work. couldn’t figure it out but realized i had a log of chain slack & thought that the front sprocket was pulling too much when i twisted the throtlte. Turned out i was wrong … rather wrong. The actual problem was that the two of the motor mount rods had broken & the thunk was probably the sound of either one or both of them breaking and the motor mounting plate being pulled into the swing arm.

After tightening the chain up at the office i figured it was time to order a new chain and get on with life but onthe weekend when i went to take the chain off (after buying a new chain breaker since i can’t find the one i have & a new chain) i realized the actual problem was the motor mounts. Fortunately i still had a few left overs from the build to replace them without having to go buy new ones so it is back up and running again. Replacing has given me a bit of pause in terms of install and nut locations as i installed the motor first and now have to to deal with wrenching limitations due to battery, wiring, and accessory placement. Note the motor mount rods are 5/16″ all thread.