Rev. 7 - August 9, 2019
Symptom | Remedies |
---|---|
Loose on Entry |
|
Loose in Middle |
|
Loose on Exit |
|
Loose Throughout Turn |
|
Tight on Entry |
|
Tight in Middle |
|
Tight on Exit |
|
Tight Throughout Turn |
|
Bold face remedies are the go-to fixes for each symptom. You might try those remedies first.
Tip: Don't stack adjustments. Make one adjustment at a time and test it.
* iRacing Dirt Late Model Spring Adjustments:
If you adjust the springs, use the spring perch offset adjustment to put the ride height back where it was originally, or at least try to adjust the ride heights so that you get the left rear bite back where it was originally. If you adjust the springs and don't return the ride heights to their original values, you are inherently stacking adjustments and you should always avoid that.
iRacing Dirt Late Model J-Bar Adjustments:
- Raising the j-bar on the chassis and lowering the j-bar on the axle is known as increasing the rake. It will generally tighten the car. If you do the opposite, it will generally loosen the car. In the real world, TOO MUCH rake (aka j-bar split) may actually loosen the car through the center of the turn.
- In general, changing the j-bar on the axle is a bigger adjustment than changing it on the chassis. You could use the axle end as a coarse adjustment and the chassis end to fine tune. Try to stick to adjusting the bar on the chassis end and changing the rake. If you feel the need to adjust on the axle end, adjust .5 inch at a time only.
- Moving both ends of the j-bar up or down raises or lowers the rear center of gravity of the car. You are moving the roll center in relation to the center of gravity. Moving the entire bar UP evenly LOWERS the center of gravity, and vice versa.
- As a general rule of thumb, raise the entire bar for a fast track and vice versa. Most of the tracks initially released on iRacing would be considered fast.
iRacing Dirt Late Model Axle Lead Adjustments:
Try to keep axle lead as close to zero as possible, especially on bigger, faster tracks. It's a good way to tighten or loosen the car quickly for different track conditions. If you're in the process of building a setup, I recommend keeping it close to zero for more stability and straight line speed.