So tonight I checked the car in we were allowed 4 runs on the track to tune the car. Car has factory bsa nails and wheels with no modification to them not counting DFW bent and all polished and smooth. It ran 2.49 the fastest as usual same guy at 2.43. When my car hits the transition it flutters then smooths back out. How can I stop this flutter in the transition area? Track is 30 something not 48 feet long. I moved my cog to .75 Infront the axle to get the speed I am currently getting. First run was .03 slower with cog at .6. Can't do anything about it this year but if I can fix this problem for next years car that would be great.
wheel, axle, and car tuning
- Thread starter yzboy250
- Start date
I made minor stealing and weight adjustments. I had it fairly well dialed in before I left home. DFW has 2.5 degree angle think maybe I should have used a 1.5 degree angle so it wold give more room for fine tuning the car. I was getting about1-2 inches in about 6 feet. When it went down the track it went smoothly to the rail not to fast or slow just transition was horrible to watch.
That seems like the steer might need to be more. The pros will help but cars that are unstable sometimes need more steer, This has worked for me, but I like my cars right on the edge of the wiggles.
yzboy250 said:
Which end of the car got loose first? If the front came off the rail first then I would try more steer. If the rear wobbled first then I would say that you need to work on rear axle alignment. Alignment on these cars is very important for speed. I saw that your rules allowed for extended wheelbases, did you drill axles holes or just use the slots? If you drilled, did you add the 1 degree cant as recommended earlier? Are you still using 2.5 degree bend in the front axle? Might try around 4 degrees there and also make sure that the other front wheel is well clear of the track so it doesn't touch. At only 2.5 degrees it may be close if you didn't raise it with the drill.
