STX Rules and Setup Questions

[Grimlock]

Originally Posted by was385

Slotting the stock struts? Kosher or no? I'm have a tough time figuring this one out.

Kosher in STX.

[UncleFester]

What rebound and bump settings do you guys run with?

[Scooby South]

Originally Posted by UncleFester

What rebound and bump settings do you guys run with?

That depends on a whoooole lot of stuff...
-what shocks/springs
-camber
-alignment
-swaybars
-tires

Whats good for some isn't necessarily good for someone else. generic, get me in the ball park we can probably do.. but everyone has a different feel.
As a rule of thumb..
*More rebound than compression/Bump
*More rebound in front than the rear depending on Spring rate
*don't usually need a whole lot of compression/bump..as you want the stroke more smooth.. more compression...less smooth..
Rebound is how it takes a jolt, compression is how fast you want your want the shock to react and put pressure back down to the ground.

To much compression/bump can make the car ill handling.
To much Rebound can make the car bouncy.

decent Reference:
Adjusting-rebound-and-compression-tips

[mottor]

Just to make sure, changing to a lightweight battery is considered illegal for STX, correct? That would bump us up to Prepared class?

[celica73]

Originally Posted by mottor

Just to make sure, changing to a lightweight battery is considered illegal for STX, correct? That would bump us up to Prepared class?

Battery change is legal.
http://scca.cdn.racersites.com/prod/...lo%20Rules.pdf

Originally Posted by Page 87 of the rulebook

14.9 ELECTRICAL SYSTEM
A. The make, model number, and size of the battery may be changed 
but not its voltage. Relocation of the battery or batteries is permitted 
but not into the passenger compartment. If the battery is relocated 
and the original battery tray can be removed by simply unbolting it, 
the tray may be removed or relocated with the battery. Holes may 
be drilled for mounting or passage of cables. Longer cables may be 
substituted to permit relocation. The number of battery or batteries 
may not be changed from stock. The area behind the rearmost seat 
is not considered to be within the passenger compartment. The area 
under the rearmost seat is considered to be within the passenger 
compartment. Battery allowances do not apply to electric and hybrid-
electric vehicles.

[mottor]

I knew I'd seen this somewhere but skimming through again I must have missed it. Thank you!

[Pin Flare]

My first SCCA autox is tomorrow in Darlington. I was asking a guy on the phone what class I should be in. He said his frs is stock and he is in the stock class, not stx. I said well I have headerback exhaust, intake, springs and big tires. He said I will be in STX. However I didn't tell him what size. I have a 9.5" wide rear wheel and 275 tires on there. According to the rules i am not legal for stx. Would I be in STU? I assume the "U" is for unlimited.

[Scooby South]

Originally Posted by Pin Flare

My first SCCA autox is tomorrow in Darlington. I was asking a guy on the phone what class I should be in. He said his frs is stock and he is in the stock class, not stx. I said well I have headerback exhaust, intake, springs and big tires. He said I will be in STX. However I didn't tell him what size. I have a 9.5" wide rear wheel and 275 tires on there. According to the rules i am not legal for stx. Would I be in STU? I assume the "U" is for unlimited.

your first one??? Most likely you should go to Steet Mod.. SM.. just because your not legal for STX because of the size tire and wheel width on the rear.... being it your first time.. its not going to matter much anyways.. your main job for the first time. is to learn the car.. your not going to set any major speed records.. so really its doesn't matter what class they put you in.. Learn the car and have fun.. thats what its about at first.. Your going to wanna be fast.. but realistically.. its take a couple of years to get there.. .. You will probably have a hard time just remembering where to go.. much less doing it quickly.. Have fun...and learn..

Bill

[Pin Flare]

Originally Posted by Scooby South

your first one??? Most likely you should go to Steet Mod.. SM.. just because your not legal for STX because of the size tire and wheel width on the rear.... being it your first time.. its not going to matter much anyways.. your main job for the first time. is to learn the car.. your not going to set any major speed records.. so really its doesn't matter what class they put you in.. Learn the car and have fun.. thats what its about at first.. Your going to wanna be fast.. but realistically.. its take a couple of years to get there.. .. You will probably have a hard time just remembering where to go.. much less doing it quickly.. Have fun...and learn..

Bill

Thankyou.

[grodenglaive]

damn, those are big tires. Must have been a tight fit!

[Scooby South]

Originally Posted by Pin Flare

Thankyou.

YW... somethings to expect from your setup...
-with the staggered setup in wheels/tires you have.. you can expect the car not to turn like you want it to.. it will have a push/tight condition that will make the car hard to turn..
-You can also expect a small amount of front tire wear from trying to get it turn and relatively no front camber..

to help that situation... you will want to increase the rear tire pressure to where its above the front.. *make sure you have a tire gauge..

more pressure in the rear..the looser the car becomes.. or at least in theory...

Have fun..

Bill

[feldy]

^ actually I'm really interested in how it goes for him. A staggered setup may help the snap oversteer we get and may allow him to stay in the gas longer.

[Pin Flare]

Originally Posted by feldy

^ actually I'm really interested in how it goes for him. A staggered setup may help the snap oversteer we get and may allow him to stay in the gas longer.

Well I won my class by 1.5 seconds. I did not touch the tire preassure. The car was super balanced and composed. Back end felt great and would only start to slip over a couple fast speed bumps. However the front pushes really bad in the 180* turn which was to be expected. But I'm very happy and can't wait for the fun runs!

[EN2_Squirrel]

Just ran event. did some fun runs and hit a few cones. Mr. Clean Magic Erasers work amazing to get rid of cone marks. also i plan on running 17x9 RPF1 w/ 35 offset on a 255/40/17. small spacer maybe?