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Author Topic:   Pullbar preload?What is it?
Dirt Roller

Total posts: 7
posted September 30, 2002 06:41 PM
What is the purpose of preoad on the pullbar(third link)?What handling changes does it affect by adding or taking preload out.This is a spring type(700 lb).Also what changes does it affect with a stiffer sping or softer.

Dirt Forum Racer

Total posts: 77
posted September 30, 2002 07:03 PM
By running more pre-load in a spring ,you are in effect making it a stiffer spring.Too many people say they cant get the car to hook up with a particular spring,even though that spring is correct,it is just being manipulated wrong by pre-load.That is not to say that you cannot change the spring pre-load for various track conditions.A good example would be a track that starts the night very heavy,and as the night progresses it gets very slick,what you could do is to start with 1/2 inch pre-load and go back to 1/16 to 1/8 at the end of the night.

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