Originally Posted by
billdelong
I really like this approach but I will go a step farther with an initial car setup where I prefer to never touch trim and keep sub-trim to zero.
I use a setup station to set the ride height, camber and front toe first...then I adjust the link between the servo arm and the bell cranks to get the car to track straight. It can be time consuming but it's worth the hassle to know my car is perfectly centered. Not all radios will balance steering properly even with sub-trim where a few points is no big deal, but I've seen some guys have close to 50 points on their sub-trim where I test drove their car and could clearly feel unbalanced throw from left to right making the car harder to drive than necessary. Once we centered everything out the car drove like a dream.
I agree that your method works fine, but sometimes, getting the servo perfectly centred can be between 2 teeth of the servo output shaft, therefore you need to use the sub trim to get it in the correct position. It is especially true with pan cars.
Martin Paradis