Run To The Coast 2 -- super cool video -- not with GPS track data!

[Steve1968LS2]

Originally Posted by barraza

Body roll in and of itself isn't necessarily a bad thing, it is the loss of control of wheel motion and transient behavior that is the problem. I have always thought BP looked undersprung in pictures, but you are bumping into the physics of the situation with regard to CG heights and wheel/ground clearance. Your spring rates are not excessively high now, it certainly wouldn't hurt to try upping them and seeing how it does.

No, body roll is fine.. well, obviously since the car sticks.. but I do find it a bit disconcerting (just need to get use to it)

The only problem I'm having is that the suspension is so compliant that the car rolls enough to cause the front tires to contact the inner wheelhouse and the frame/header get awfuly close to the ground. A little less roll wouldn't be bad along with a redesign of the front wheel wells..

I have 550 springs for the front.. and 310s for the rear, would that make any difference or do I need to make a bigger change?

[ccracin]

Originally Posted by Steve1968LS2

No, body roll is fine.. well, obviously since the car sticks.. but I do find it a bit disconcerting (just need to get use to it)

The only problem I'm having is that the suspension is so compliant that the car rolls enough to cause the front tires to contact the inner wheelhouse and the frame/header get awfuly close to the ground. A little less roll wouldn't be bad along with a redesign of the front wheel wells..

I have 550 springs for the front.. and 310s for the rear, would that make any difference or do I need to make a bigger change?

Steve,

The springs you have don't sound bad. You don't want to loose all the compliance as you will loose traction quicker when the road or track surface isn't optimum. Not to mention if you drop a wheel off in the corner or hit the curbing it can really upset the car. If I read right, you said the rear bar is disconnected. I'm not sure what bar you have on the front, but I would try a bigger bar on the front and connect your rear bar. This should help keep the balance and gain roll stiffness in the corner, but keep some of your compliance. Obviously, I don't know your exact specs or if you have these options, just a suggestion. Penny is looking really good!

[Steve1968LS2]

Just for the record.. I deleted a bunch of crap that didn't pertain to the thread..

This was about the exhibition video..not about event politics or results.

Having said that..

Congrats to Ryan at DSE for having the fast lap of the event
Congrats to Speedtech for winning the comp class of the road course
Contrats to TCI for winning the comp class of the speed/stop challenge

See, it's all puppies and rainbows now

[Steve1968LS2]

Originally Posted by ccracin

Steve,

The springs you have don't sound bad. You don't want to loose all the compliance as you will loose traction quicker when the road or track surface isn't optimum. Not to mention if you drop a wheel off in the corner or hit the curbing it can really upset the car. If I read right, you said the rear bar is disconnected. I'm not sure what bar you have on the front, but I would try a bigger bar on the front and connect your rear bar. This should help keep the balance and gain roll stiffness in the corner, but keep some of your compliance. Obviously, I don't know your exact specs or if you have these options, just a suggestion. Penny is looking really good!

Im worried that lessing the roll will lessen compliance and grip.. this stuff is COMPLICATED!!!

[Chad-1stGen]

Man that race pack data stuff is super cool. I'm afraid to look up the price on something like that lol.

[Steve1968LS2]

Originally Posted by Chad-1stGen

Man that race pack data stuff is super cool. I'm afraid to look up the price on something like that lol.

Like $800 bucks or so... It really will help you be faster and it doesn't like like the the "I think I hit 140 on the straight" deal when in fact you were in the 120s.. lol

I think they might have less expensive sytems without the display.. check the Rackpak site.

[Chad-1stGen]

Originally Posted by Steve1968LS2

Like $800 bucks or so... It really will help you be faster and it doesn't like like the the "I think I hit 140 on the straight" deal when in fact you were in the 120s.. lol

I think they might have less expensive sytems without the display.. check the Rackpak site.

It just occured to me there are probably apps out there for the Iphone 4 with its GPS and accurate accelerometer that can possibly give me a taste of what its like. I'm off to do some searches lol.

[Steve1968LS2]

Originally Posted by Chad-1stGen

It just occured to me there are probably apps out there for the Iphone 4 with its GPS and accurate accelerometer that can possibly give me a taste of what its like. I'm off to do some searches lol.

Yea, I have one called G-Force.. it's pretty good at giving peak g's

[ccracin]

Originally Posted by Steve1968LS2

Im worried that lessing the roll will lessen compliance and grip.. this stuff is COMPLICATED!!!

Yes it is Complicated! My suggestions are from my experiences with circle track racing. Increasing the roll stiffness with the bars will help you maintain grip and compliance while decreasing your roll angle. Not hard to try if the correct bars are available. Good luck.

[Steve1968LS2]

Originally Posted by ccracin

Yes it is Complicated! My suggestions are from my experiences with circle track racing. Increasing the roll stiffness with the bars will help you maintain grip and compliance while decreasing your roll angle. Not hard to try if the correct bars are available. Good luck.

I was talking with Doug at Global West and he thinks Im having a high-speed roll issue and not a low speed roll issue.. For high speed he thinks upping the front spring rate a touch would help.

Maybe a bit more camber for bite on the the tight autocross stuff.

Hopefully I didn't screw up what he said in translation.. Anyways, we have ideas to less the roll a little bit without huring bite.