Suspension compression??
Thread Starter
Race Director
Joined: Sep 2004
Posts: 16,271
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From: Stockton, CA
Suspension compression??
Got my high res pics from last weeks trackday..... My 95mm ride height makes for quite a low car...& the suspension travels up pretty far..... Take a look..I'd guess the forward suspension mounting point is close to 1" off the ground
Burning Brakes
Joined: Jan 2007
Posts: 1,117
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Your inside front tire is doing NOTHING ! and have to think the inside rear is also getting light if the right front is that compressed. You are going down hill by the look of the photo.
What is the front spring rate ? Interesting to see the tidewall deflection on the rear but the high degree of negative camber in the front seems to keep the sidewall pretty vertical. Same negative has the inside front with little contact.
What is the front spring rate ? Interesting to see the tidewall deflection on the rear but the high degree of negative camber in the front seems to keep the sidewall pretty vertical. Same negative has the inside front with little contact.
Thread Starter
Race Director
Joined: Sep 2004
Posts: 16,271
Likes: 82
From: Stockton, CA
Your inside front tire is doing NOTHING ! and have to think the inside rear is also getting light if the right front is that compressed. You are going down hill by the look of the photo.
What is the front spring rate ? Interesting to see the tidewall deflection on the rear but the high degree of negative camber in the front seems to keep the sidewall pretty vertical. Same negative has the inside front with little contact.
What is the front spring rate ? Interesting to see the tidewall deflection on the rear but the high degree of negative camber in the front seems to keep the sidewall pretty vertical. Same negative has the inside front with little contact.
My setup as the photo reflects is 3+ camber in front, 2.5 rear....I run 800+ front springs with STIFF valving (watch my videos)...my front ride height is 95.25mm and rear is 140mm (stock measurements)..I have a Devek front roll bar and NO rear bar...I disconnected it to help the worn LSD not slip in slower corners...
I should NOTE that my suspension is NOT stock, not even close...I run custom bilsteins on full heim joints all around....a stock shock 928 this low would be on the bump stops....
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Joined: Oct 2004
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From: In a tizzy
If you disconnected the rear bar to keep the LSD in slower corners, you need more front bar to keep that inside rear wheel on the ground. And so you can put some rear bar back in to keep the front inside down on those climb outs.
That's what fixed this instead of disconnecting the rear bar to let that inside tire down. It was overloading the front outside and pushing.
Shocks change the RATE the suspension moves, not how much, travel limit difference excepted. Springs and anti-sway bars control the amount of travel. You want springs only stiff enough to keep from bottoming out under the highest loading, then balance lateral loading with the anti-sway bars. Then control the rate of change with shocks to match your driving style.
That's what fixed this instead of disconnecting the rear bar to let that inside tire down. It was overloading the front outside and pushing.
Shocks change the RATE the suspension moves, not how much, travel limit difference excepted. Springs and anti-sway bars control the amount of travel. You want springs only stiff enough to keep from bottoming out under the highest loading, then balance lateral loading with the anti-sway bars. Then control the rate of change with shocks to match your driving style.
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From: Tasmania, Australia
If you disconnected the rear bar to keep the LSD in slower corners, you need more front bar to keep that inside rear wheel on the ground. And so you can put some rear bar back in to keep the front inside down on those climb outs
That's what fixed this instead of disconnecting the rear bar to let that inside tire down. It was overloading the front outside and pushing.
Shocks change the RATE the suspension moves, not how much, travel limit difference excepted. Springs and anti-sway bars control the amount of travel. You want springs only stiff enough to keep from bottoming out under the highest loading, then balance lateral loading with the anti-sway bars. Then control the rate of change with shocks to match your driving style.
That's what fixed this instead of disconnecting the rear bar to let that inside tire down. It was overloading the front outside and pushing.
Shocks change the RATE the suspension moves, not how much, travel limit difference excepted. Springs and anti-sway bars control the amount of travel. You want springs only stiff enough to keep from bottoming out under the highest loading, then balance lateral loading with the anti-sway bars. Then control the rate of change with shocks to match your driving style.
Get the LSD sorted and put the back bar on again.
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Thread Starter
Race Director
Joined: Sep 2004
Posts: 16,271
Likes: 82
From: Stockton, CA