Re: Progress report

Posted by HH56 On 2012/2/4 14:04:29
Quote:

bhappy wrote:
Howard,
My brake pedal mod was a hurried, on-the-spot fabrication, as I wanted to use my original 56 Exec's brake pedal, as did Craig. My fabricated bracket lowered the pedal quite a bit. I attempted to make the pedal mods, but once installed, the pedal hit the carpet before engaging the brakes.
I used a pedal from a 51-54 Packard model instead. My quickly fabricated pedal has about a 5.5:1 ratio and engages the brakes in .75" travel (less than 1"). It is also pretty sensitive, more so than the BTV. Might this be a result of using a dual diaphrgmed booster?


Craig might have a better answer but I think the ratio is more the reason for sensitivity than the dual booster. From specs I've been able to find on various sites it seems most factory installs of modern power units like between 4 and 5:1 and most standard units like between 5 and 6 1/2:1. I am surprised your travel is that small & can see where that could be touchy.

Currently mine is 3 1/2 and a bit too low. Takes more pressure than I like -- definitely more than the BTV although travel is about the same. I'm at the place Craig was before he decided to play with his ratio.

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