CSX3170 autox prep

[Brooklyn-427]

They use a machined steel sleeve that slides on to the spindle shaft, thus increasing the shaft diameter and positively locating the inner and outer bearing so the main retaining nut can be wound up fully tight also. Its a system that works well.

[Dominik]

I highly reccommend a toothed belt arrangement. Are you sure you are not having an imbalance somewhere? Belt shedding could be a sign of that...

Are those tires you mention sliks?

0.9g at 5.500 in third is awesome!

[fordracing65]

When is this race, I want to go watch...

[Cobra #3170]

Originally Posted by Dominik

I highly reccommend a toothed belt arrangement. Are you sure you are not having an imbalance somewhere? Belt shedding could be a sign of that...

Are those tires you mention sliks?

0.9g at 5.500 in third is awesome!

The belt goes into harmonics at extreme rpm as seen on a GOPRO camera.
We disconnected the alternator and it still jumped off or turned upside down.
Converting to a toothed belt or serpentine would be a major deal and require engine removal so I am desperately trying everything else.

No, they are BF Goodrich Rival S 315x30x18 200 TW street tires

Peak horse power is at 7600 and peak torque is 5700. The car went from 67 mph to 91.7 in 2.2 seconds on treaded street tires including a shift to third.

[Cobra #3170]

Originally Posted by Brooklyn-427

They use a machined steel sleeve that slides on to the spindle shaft, thus increasing the shaft diameter and positively locating the inner and outer bearing so the main retaining nut can be wound up fully tight also. Its a system that works well.

Brooklin427,

Good idea, that is how my rear hub carriers are done so the bearing is perfectly loaded. I have the spindle nuts so tight that I repack the bearings and check them about every other time out but still have the problem. I actually think it is flex in the spindle shaft and upright causing the issue.

Ford Racing,

November 14 and 15th at West World in Scottsdale

[Dominik]

Under breaking you are not achieving the desired numbers, but are the tires already locking up? 1g decel sounds quite decent for a threaded tire, but I am not familiar with latest (threaded) tire capabilities.

I shall dig out the acceleration / coast down test I did in 1995 with a 496 cui and hardtop. Your values remind me of that time. My max rpm was 6500.

Good luck with your V belt! My fan belt also turned inside out. I changed belts and location of the alternator and it seemd to help - for whatever reason.