Adjusting Corner Weights ?
Adjusting Corner Weights ?
(OP)
I need to set the corner weights on a Cobra replica in order to optimise the handling of the car. Any tips on the proceedure to achieve such, would be appreciated. (The car has coil over adjustable shocks and adjustable torsion bars, both front and rear.





RE: Adjusting Corner Weights ?
Regards
pat pprimmer@acay.com.au
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RE: Adjusting Corner Weights ?
BTW, you should simulate the driver's weight with ballast in the driver seat. Distribute a little to the footwell, if it's a light car, if you're tuning it for a large driver, or even if you're just being picky. Iron free weight (barbell) plates work well for this (you know their weight, they sit in flat stacks that can be pinned, and they can't rip and leak stuff all over the place).
Norm
RE: Adjusting Corner Weights ?
RE: Adjusting Corner Weights ?
Thanks to all of you for the prompt response, In answer to questions, 1. By 'Torsion Bars' I do mean 'anti-roll bars', 2.Whilst I don't have corner scales, I do have access to such and really would like to do the set-up myself.
RE: Adjusting Corner Weights ?
Take the time to document what change has what effect on corner weights. Set yourself up a bunch of nice tables refering to something easily measurable for a reference. That way when you are at the track and don't have time to put the car on scales you can at least make a reasonably well informed adjustment.
RE: Adjusting Corner Weights ?
1) Make certain the floor is level(this means the floor is a plane). Shims (thin boards, etc.) can be put under the scales to make this so. To check level, tape a, say, 12 foot length of clear tubing to two yard sticks. Fill the tube with colored water (food coloring from your local market-get some junk food while you're at it)to a height that the level can be read on the yard stick. How to use this "tool" is probably self evident.
2) Make ramps to the scales with a flat area of a few feet before the scales. This is because it is advisable to roll/bounce the car after adjustments have been made. There is considerable stiction in the suspension joints.
3) This is probably obvious but set the tire pressures before setting the corner weights.
4) For street/road racing cars, the corner weight are usually set equal side to side. Circle track cars play with "weight jacking".
RE: Adjusting Corner Weights ?
Norm
RE: Adjusting Corner Weights ?
Oval track race cars are set up by 'blocking' or measuring the frame height first until they are dead on. Once that is done, then small adjustments are made to bias the car for left turns.
Keep the wheels on the ground
Bob
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