somewhere on here it talks about what to do about coaster brake set up with engine. what were some ideas about how to keep the bike chain taught and on the other side to keep the motor chain taught? I remember one saying he didnt use the tensioner but got a half link for either the bicycle side or the motor side! what our some other ideas that have been posted? Iam going to build a cruiser bike for a friend new out of the box and it has coaster brakes with springer front end. there is no front brake on this ride , but I know someone with a drum brake that I could use and they would install the drum for me. but my main question is the best set up for the coaster brake?