A Ladder Bar Hole Tuning/Adjustment

[CraigG]

Hey Guys,

Bar Hole location Question = Relationship to Effects on initial Hit of Tire:

? Raising bar will Increase Hit which may bounce or crush the tire
? Lowering bar will Decrease Hit and soften initial hit of the tire

SO, if raising launch RPM from 3500 to 5000 will increase initial application of power -
THEN, raising the bar will help compensate for initial hit increase provided the tire stays applied to ground and avoids bouncing or crushing?

Thanks Guys for the clarification.
Craig

[MAURICE BLENDHEIM]

Craig… Do you have a Specific Problem you are trying to overcome? MB

[CraigG]

yes break loose on initial hit - recovers guessing 10 feet.

Want to understand relationship of bars to torque input.

Thanks, Craig

[MAURICE BLENDHEIM]

What is your Baseline Setting? What Tires? What type of Car? Springs, Shocks ? There potentially could be other variables that are compounding your problem. MB

[Mike Pearson]

I race a ladder bar car. my car is set up with 2 degree down angle on the ladder bar with 2 degrees of down pinion angle. It will not work at all if the bars are past level or running up hill in the front. All measurements are taken in relation to the frame or rocker panel. if the car is set up correctly no preload is best. my car is 3140# and i have a 110 lb spring rate on the shocks. Typically the bolt holes are too coarse of an adjustment. I use ride height if i need to make any adjustments. Start with the shocks loose on the front and rear and the tighten as you test.

[SGSST109E]

HAve you ever set your car up on scales? Do you have equal weight on the rear tires?