Got_All_4
Luke Skywalker
Offline
Looking for does and don'ts in driving with an overdrive. I have installed a early TR6 A type overdrive in my TR3a and a good chance this weekend I'll drive it with a overdrive for the first time. It does have 2nd, 3rd & 4th enablers . Looking at questions as to what speeds or RPMs is best to drive in. How often should it be used and what about down shifting and any other advice? Little concern too is I just tested it up on jack stands with no wheels on kinda free wheeling and the tranny is smooth until I engage the OD. Then it gets loud and thumpy. Is that normal?