My 1967 Build (Finally)

[KyleSeal]

Originally Posted by hewittca

That's some really fine engineering to get that mechanism to fit in such a compact and concealed location! I'm wondering how your measurements work out for this arrangement, because with flipping the pedal pushrod an master pushrod on the pivot shaft you are actually increasing the pedal ratio and thus increasing pedal travel to achieve the desired master cylinder travel. For example, in the Wilwood schematic if you flip the 2.67" and 4.00" your pedal ratio goes to about 9:1. Maybe I'm just not understanding the schematic/phots correctly. Have you had a chance to get a feel of the pedal yet?

Good catch! I had not considered that, but to my calculations, if that is the case, I can drop the pushrod position on the original pedal accordingly to drop the ratio. The numbers on the diagram are not mine, just a given example from Wilwood. But given the case, if the bellcrank ratio flipped is 0.66:1, and I drop the main pedal ratio to a 2.8:1 then I will achieve about 4.2:1. Which will still help with my operating angles, and give me a proper pedal. The truck isnt back together yet, so I wont know about pedal feel until Ive got it reassembled.

EDIT: I added a diagram of my unit, with my setup + measurements and how I calculated mine with my flipped assembly.