Whiplashdjs
Quarry Creeper
Troubleshooting 3. The 4 link stuff is at the top
Swing arm suspension link angles
More uphill angle of both left rear and right rear lower links creates more roll over steer.
4-link suspension link angles
Excessive left rear upper link uphill angle creates under steer
Increasing downhill angle of lower links reduces roll over steer and increases indexing
Reducing uphill angle of right rear upper link reduces roll over steer and decreases indexing
Increasing uphill angle of right rear upper link increases roll over steer and indexing. The adjustment range is 14 to 18 degrees.
Stiffer rate makes car tend toward over steer
Softer rate makes car tend toward under steer
Left rear spring
Stiffer rate makes car tend toward under steer
Softer rate makes car tend toward over steer
A higher tire pressure at the right rear will loosen the chassis
A lower tire pressure at the right rear will tighten the chassis
A higher tire pressure at the right front will tighten the chassis
A lower tire pressure at the right front will loosen the chassis
A lower tire pressure at the left rear will tighten the chassis
Keep a constant check on tire pressures - Racing tires bleed down constantly - Check and adjust pressures just before the car heads onto the track
Every time the car comes off the track, check tire pressure and stagger.
Always write it down.
Always use an accurate calibrated tire pressure gauge
If you drop the gauge, get it recalibrated
Alex George / Assistant Engineer /
Team West-Tec
"Rubbing is racing, get over it!"
A big thank you to Alex for giving us permission to reproduce his oval racing articles, Alex has been involed with Oval racing since 1983 when we was a mechanic with Firestone, and has working on sprint cars as well as other cars used on oval circuits across America, since 2001 Alex was worked as a assistant engineer with
Team West-Tec
Swing arm suspension link angles
More uphill angle of both left rear and right rear lower links creates more roll over steer.
4-link suspension link angles
Excessive left rear upper link uphill angle creates under steer
Increasing downhill angle of lower links reduces roll over steer and increases indexing
Reducing uphill angle of right rear upper link reduces roll over steer and decreases indexing
Increasing uphill angle of right rear upper link increases roll over steer and indexing. The adjustment range is 14 to 18 degrees.
Stiffer rate makes car tend toward over steer
Softer rate makes car tend toward under steer
Left rear spring
Stiffer rate makes car tend toward under steer
Softer rate makes car tend toward over steer
A higher tire pressure at the right rear will loosen the chassis
A lower tire pressure at the right rear will tighten the chassis
A higher tire pressure at the right front will tighten the chassis
A lower tire pressure at the right front will loosen the chassis
A lower tire pressure at the left rear will tighten the chassis
Keep a constant check on tire pressures - Racing tires bleed down constantly - Check and adjust pressures just before the car heads onto the track
Every time the car comes off the track, check tire pressure and stagger.
Always write it down.
Always use an accurate calibrated tire pressure gauge
If you drop the gauge, get it recalibrated
Alex George / Assistant Engineer /
Team West-Tec
"Rubbing is racing, get over it!"
A big thank you to Alex for giving us permission to reproduce his oval racing articles, Alex has been involed with Oval racing since 1983 when we was a mechanic with Firestone, and has working on sprint cars as well as other cars used on oval circuits across America, since 2001 Alex was worked as a assistant engineer with
Team West-Tec
