Guldstrand Mod Templates

[a67]

I can give some insight to the why of the new hole locations. First, moving the new mounting holes toward the rear. This appears only on the template. The two mounting holes in the frame are not parallel to the ground. So the template is also on an angle.

The affect is that the new holes are not moved rearward as much as it would seem. And what little the holes are moved rearward allows for increased caster.



As for lowering the front mounting hole more then the other, this reduces anti-dive on braking. If you look at the upper control arm (UCA) from the side you will see that the front of the UCA is higher then the rear. That is the anti-dive, more angle more anti-dive.

Put in higher rate front springs and the required amount of anti-dive is reduced. Too much anti-dive is uncomfortable to drive hard, there is no 'give' by allowing the front end to dip a little on hard braking. Lowering the front UCA mounting point more then the rear mounting point reduces the anti-dive.

Bob.

Edit: the pictures in this link (from OP) show the UCA angle and how little the new mounting holes are moved rearward:

http://www.auto-cross101.com/Guldstrand_s_modifed.html