kbc993

Just had my Cup shocks rebuilt by David Glenn and he set the pressures at Front-75psi Rears-225psi. Kelly-Moss suggested Front -130psi and Rear 180. Whats the best setup?

jrgordonsenior

This is a subject dear to my heart...... Factory settings are 85 fronts, 225 rears. On smooth tracks I tried up to 120 fronts without noticing much difference. At Cal Speedway and Las Vegas Motorspeedway, 2 tracks with bumps on their high speed ovals, I lowered the fronts to 65 and the rears to 190 per the recommendation of Dennis Aase. It certainly handled the bumps better keeping me from getting airborne, but I felt I was losing something on the tight infield infield turns. I think that you have to adjuct for the track and the type of turns you're running on. If it's smooth I would opt for the higher pressures.

Your sway bars will have a much bigger influence on your cup's handling. Where does Kelly Moss say to set them?...

kbc993

For Road America Kelly Moss set the fronts at 130psi and rears at 180psi. What shock inflator are you using?

JimB

This one from RaceTech works great with the stock Sachs. It has several advantages over the others I have tried. 1) it will seat on the short Sachs valve stems without entensions, 2) the **** you use to tighten it on the valve stem is much easier to use than most (hard to explain, see pictures), 3) the method for bleeding off pressure is simple but works great.

The only downside is the guage is sort of cheap. The rest of the tool is really well made though.

http://www.racetech.com/shopping/sho...Nitrogen+Gauge

jrgordonsenior

I meant your sway bar settings.....

I have the Genesis gauge which is without a hose: http://www.hrpworld.com/index.cfm?fo...action=product
and I recently boought the digital Longacre gauge...
http://www.longacreracing.com/catalo...=1036&catid=19

kbc993

I have the front sway bar set one from full stiff and the rear one from full soft. How do you like the Longacre Digital gauge?

jrgordonsenior

Love the Longacre gauge. It's very easy to use and accurate.

My cup would lean like a drunken sailor with the rear bar that soft. I almost always run the rear bar full stiff, with the front 1-off full stiff like you. Have you changes the rear springs to something stiffer? That would explain the softer rear bar setting.....

tedean

Any updated recommendations on pressures? I'm heading to COTA was wondering if anyone had an opinion.