STX Rules and Setup Questions

[cjd]

Originally Posted by renfield90

Offset is unrestricted. However you are not allowed to roll the fenders or have holes in your wheel well liner due to tire rub.

I'm not sure that's correct.

Originally Posted by 14.2 (Bodywork) E.

Fenders may not be cut or flared but the inside lip may be rolled to gain additional tire clearance. (The outer fender contour may not be changed.) Plastic and rubber wheel well splash shields may be modified for tire clearance and to accommodate a rolled inside fender lip. The modifications may serve no other purpose (e.g., air intake, brake ducts, etc). No other changes to the standard fenders or wheel wells are permitted.

[smg1138]

Originally Posted by strat61caster

Everyone I've talked to who has committed to a real number is running more than three degrees, myself included. If the tire temps work for you then keep on trucking.

How far beyond -3 are you guys going? That seems like a hell of a lot of negative camber for Autocross. Right now I'm at -3 front and -2 rear.

[renfield90]

Originally Posted by cjd

I'm not sure that's correct.

Yeah you're right, it sounded fishy when I wrote that last bit. Now I remember.

A long time ago it used to be illegal. But then, how much liner has to be rubbed away before it's illegal? How do you tell if a fender has only been slightly rolled? All in all it was very difficult to police and the offset/tire size rules were creating that situation.

In stock class it is most definitely illegal. Any amount of material missing = unauthorized mod and protest.

[strat61caster]

Originally Posted by smg1138

How far beyond -3 are you guys going? That seems like a hell of a lot of negative camber for Autocross. Right now I'm at -3 front and -2 rear.

Anywhere from -3.2 to -3.5 is what I've heard from others, probably has a lot to do with style, course surface and layout, and how stiff your front springs/swaybar combo are. Running RCE and the Whiteline bar your front end will have a lot more roll resistance than my current setup, would make sense that you'd need less camber than me.

Only way to find out is to try changing it or take some data.



Thought I'd seen some people running >-4 on track, but found this post:
http://www.ft86club.com/forums/showp...1&postcount=36

[smg1138]

Originally Posted by strat61caster

Anywhere from -3.2 to -3.5 is what I've heard from others, probably has a lot to do with style, course surface and layout, and how stiff your front springs/swaybar combo are. Running RCE and the Whiteline bar your front end will have a lot more roll resistance than my current setup, would make sense that you'd need less camber than me.

Only way to find out is to try changing it or take some data.



Thought I'd seen some people running >-4 on track, but found this post:
http://www.ft86club.com/forums/showp...1&postcount=36

Hmm, it would be nice to be able to adjust camber on the fly. I guess that's an aspect of camber plates I hadn't considered. Running -3 on the street definitely isn't ideal. What camber plates are popular with the STX crowd? I've only really looked at the Vorshlag plates.

[BlaineWasHere]

I daily right at -3 front and it's fine for tire ware.


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[strat61caster]

Whatever fits the coilover and the budget.

I've got Raceseng.

[GeorgeJFrick]

We determined the SPCs are not legal unless you swap bushings. Counter Space Garage's website says their SPC LCAs are STX legal. I don't know how to mention people? @CSG Mike ?

[2superblus]

The unit they have listed on their website is STX legal.

http://counterspacegarage.com/spc-rl...-frs-gt86.html

Originally Posted by GeorgeJFrick

We determined the SPCs are not legal unless you swap bushings. Counter Space Garage's website says their SPC LCAs are STX legal. I don't know how to mention people? @CSG Mike ?

[Silverspeed]

Originally Posted by smg1138

Running -3 on the street definitely isn't ideal. .

Camber doesn't kill tires.... toe does. Although toe + camber is worse. I run 3+ as well with no ill effects. Unless it rains. Hard.

[nisti]

Originally Posted by 2superblus

The unit they have listed on their website is STX legal.

http://counterspacegarage.com/spc-rl...-frs-gt86.html

It was recently discovered that the sealed bushing SPC uses in their arms contain more metal than oem.
So, technically, not legal.

[jbailey8748]

Originally Posted by nisti

It was recently discovered that the sealed bushing SPC uses in their arms contain more metal than oem.
So, technically, not legal.

Ok. No that we are beating this horse to death. Whitelines new rlca is an spc rlca with STX legal bushings. If you need to make the spc ones legal and spc can't help you get there whitelines can.

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[2superblus]

Originally Posted by nisti

It was recently discovered that the sealed bushing SPC uses in their arms contain more metal than oem.
So, technically, not legal.

When/where did this discovery come to light?

[Silverspeed]

Originally Posted by 2superblus

When/where did this discovery come to light?

Probably when DIF started marketing their ST legal ones.... I guess I'd have to cut open my SPC bushings to see if there is any difference. It may in fact be a spherical type joint versus a bushing.

I do believe that 90% of the twins in the STX field are running the arms as is. The DIF replacement bushings are RIDICULOUSLY priced at $90 a pair ($110 retail). They're no larger than my steering rack bushings but 3+ times the price. Dumb to the consumer, smart for them as it appears they are the only game in town for the SPC arms. Maybe a group buy is in order? Maybe SPC should step up and make their own set?