How much wheel lifiting is too much?
02-15-2012, 02:46 PM
#77
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Tom,
Check your picture files for wheel lift at TWS. Bet you won't find any. Or at the very least, the vast majority of your wheel lifts will be found at MSR and ECR, where elevation changes in the middle of the turns are to blame. I could be making the same mistakes as you in those same turns, but this much I'm pretty confident about: If I tried to drive those same turns so that all 4 wheels would stay on the ground, my lap times would suffer. Even in my old front-heavy C4 Cab, I could not keep all 4 wheels on the ground! It's the track. Stay on the gas!!!
Check your picture files for wheel lift at TWS. Bet you won't find any. Or at the very least, the vast majority of your wheel lifts will be found at MSR and ECR, where elevation changes in the middle of the turns are to blame. I could be making the same mistakes as you in those same turns, but this much I'm pretty confident about: If I tried to drive those same turns so that all 4 wheels would stay on the ground, my lap times would suffer. Even in my old front-heavy C4 Cab, I could not keep all 4 wheels on the ground! It's the track. Stay on the gas!!!
-td
02-15-2012, 07:25 PM
#78
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02-16-2012, 01:53 PM
#79
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Most race teams will run pretty stiff rear springs to limit the effects of the rear suspension geometry, requiring a high front roll stiffness to get some balance. Relatively soft front springs are used, meaning the roll stiffness comes from the front bar. If lateral balance is a function of increasing front roll couple, once the inside front wheel is lifted, control over the roll couple is lost and the car will oversteer.
Obviously you're faced with running lower rear rates and risking the effects of the rear geo.
Obviously you're faced with running lower rear rates and risking the effects of the rear geo.
02-16-2012, 04:50 PM
#80
Three Wheelin'
I did see your earlier posts before I made the suggestion of wider rear tires. I didn't see that suggestion, so I thought I'd post about it. Sometimes it isn't possible due to car configuration or class rules, but when allowed is a great tool to balance a car (along with suspenseion, aero, etc.)
