did my first bench test [12volt] of the motors, chain and wheel.  everything seems fine, its almost as if i know what i'm doing!

when the motors first turn on the chain snaps up hits the the seat mount.  not a major issue and the chain could be tighter which might fix it, but if it does become an issue i might try smaller motor sprockets, down to 13 teeth.  i might switch to 13 teeth just for better acceleration, but i'll wait till the test drives.  if i switch to 13 teeth my top speed will drop from upper sixties to lower sixties in mph.