Quote:
Originally Posted by mfain
I assume Blake will build a new set of LCAs using his design but retaining the RSRT pick-up points/geometry. Moving the pick-up points changes all of the current suspension geometry. Changing the effective length of the LCA would, for example, require a different length or repositioned rack to retain proper bump steer. The angled (not parallel with the centerline axis) pick-up points of the LCA move the lower ball joint fore and aft slightly with suspension travel, which affects dynamic caster gain, which I'm sure is a deliberate design feature of the current configuration. Moving either of the LCA pick-up points up or down changes the roll center, dynamic caster gain, and/or anti-dive. And as you point out, changing the relationship of the UCA and LCA lengths changes the camber curve. Lots to consider.
Pappy
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I think it would actually be advantageous to update the geometry of what's on the the Dirt Missile to what Speed Tech is using. It really is dirt track stuff at the moment. It is either from Howe or copied from Howe, and as Mike at Muscle Rodz pointed out, I'm pretty sure the current lower control arms are actually going to lose caster under compression because they are not mounted parallel to the longitudenal centerline of the car.