Hi all,
Just got home from a great weekend down south. Congrats to Brady Ingelse of Retrospeed on the ‘24 sportsman title! Cameron Crockett finished second on Saturday to Brady’s win, taking the title fight all the way to the last race, where he had issues on the start and couldn’t run the race. I started from the second row and got to Brady’s back tire into turn 1, but didn’t have the grip left to challenge him in the race. Chris Marlowe brought it home in 3rd both days.
I had some transmission rattling noises in Thursday practice and we split the cases in the pits. Ended up buying an f2 motor at the swap meet for its gearset and we were back in business for Friday. The issue I’m looking for help on; in my 1975 cases, I could not fit the primary shaft into all 3 c clips in the upper case with the washer in place behind the Cush drive. This was the case with my prior 1975f gear set that was in these cases as well as the newly installed 77/78 gear set. Was there some change in the later cases?
I’ve also been running a dyna drl400 rev limiter with an mps clutch lever as a launch control. Full throttle launches from 6750rpm are pretty quick. Surely this is pretty hard on the internals, with fresh primary chains and a rebuilt Cush drive by cycle x. I’m using a Barnett clutch for a 77, with Barnett springs and 1 preload washer. Starting to feel a few sudden bang/surges on the run to the redline before the 2nd gear shift. Runs smooth everywhere else. Would it make sense that the Cush drive is protesting? Maybe the clutch is slipping and re grabbing? It never stops accelerating. Clutch plates are in ok shape, definitely developing some blueing after maybe 20 launches at Blackhawk and Pitt race.
2025 starts now!
