Posted by Chris Case [75.36.47.217] on Tuesday, June 25, 2013 at 00:38:25 :
In Reply to: Pic of vac boosted unhderfloor posted by Chris Case [75.36.47.217] on Tuesday, June 25, 2013 at 00:20:55 :
See pics about #43 +++ ?
Whether hydroboost or vacuum boost, you'll need to build a bell crank to change the fron pull of the rod to a fron push of the master cyl push rod.
IIRC, I used a vertical shaft on a bell crank for the vacuum system, and a horizontal shaft on the hyro-boost.
I wouldn't use a pull-rod on a non-boosted system because the higher tension might lead to early fatigue. But i figured the lower tension needed with a booster means longevity. Either way, the weak point is still the clevis pin at the pedal.
No, you can't modify the single cylinder pedal to suit the dual bracket, different pivot points mean a whole different shape to the pedal. What I would have prefered was the dual pedal, then build my own bracket to accept the hydo-boost system. But that wouldn't work either, the reservoir has to be accessible through the floor, no room for booster to the front. I even thought of umm M37 style through the frame, booster outside, but still no access to the reservoir. Hmmm, maybe a cylinder with remote reservoir, lead hoses through floor into cab? Is there on big enough?
Easy fix is a hung pedal system, but I'm not the only one here who loves the quaint through-the-floor OE design.