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Old 01-08-2007, 12:57 PM
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Brake Pedal Placement Problems

Ok, so this is probably going to be a relatively easy fix.. but I can't think of how to approach this. I thought the mod's I made would take care of my issue but they haven't.
Now the Problem:
This is a 50' Chevy P/U I mounted a booster under the cab and utilized the stock brake pedal and mount. The pedal comes up through the original hole in the floor boards, and comes up as high as it did in stock form. My new seat sits a little lower than the stock bench seat. I am a fairly big guy, and didn't find the original positioning all that comfortable or easy to get to so it's even worse now. I decided to shorten the arm that goes from the booster up to the brake pedal arm which I am just going to call the booster arm. (pictured) I also heated it with my torch and adjusted it so the pedal would be moved to the left. That all worked fine, and now my brake pedal is lower and to the left of the original position. With the shortened booster arm the brake pedal doesn't have to be depressed as far now but still comes out about 8" from the fire wall. and is 2" from the wall when fully depressed. I know I can take most of that 2" out of the brake pedal arm but it still sticks out way too far to be practical.. I have been spending alot of time thinking about this..

ideas???

one more question... right now the booster is installed, and no brake lines or fluid in the system.... when i depress the pedal all the way until the booster is bottomed out.. is that as far as im going to need to press to actually lock the brakes? or will that occur long before the pedal bottoms out?
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Last edited by artillerystevens; 01-08-2007 at 01:05 PM.
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Old 01-08-2007, 01:00 PM
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a couple more pics

These pictures just shows the original position, and the new position relative to the seat
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Old 01-08-2007, 01:24 PM
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This is just a guess but couldn't you drill a new mounting hole in the arm of the pedal to move it closer to the floor. I think the system being charged with fluid is going to take some travel out of your pedal.
Good luck.
Kim
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Old 01-08-2007, 01:53 PM
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You are right, I can move the pedal almost 2" closer to the floor, which I will do. But it will still be sticking out way to far.
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Old 01-08-2007, 02:42 PM
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I'd get the system charged first so you have an idea of the proper amount of travel. I also noticed the pedal is coming through the floor a lot lower than the original stock location. On my 57 truck when I put the pb kit on the pedal still came through the firewall at the original location. The only thing I may change yet on mine is I might cut the pedal arm so it's shorter and closer to floor so it's closer to the gas pedal. For now I'll wait and try it driving. The location you have now for your pedal may work better if you take some of the curve out of the arm. Right now it looks like you won't be pushing down with your foot, but more in a forward motion.
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Old 01-08-2007, 03:23 PM
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You moving the master the full stroke of the piston inside the bore. You'll need about half of it to apply the brakes. At least on the stuff I build.
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Old 01-09-2007, 02:15 AM
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johnsongrass, that is what i was hoping to hear! If that is the case then my brake pedal placement will work just fine. I can cut about half of the length of the arm out. I will also re-heat the arm and bend it up higher. I believe I can make this current set-up work well.
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Old 12-22-2013, 10:57 PM
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brake pedal out to far

Quote:
Originally Posted by murrsue View Post
I'd get the system charged first so you have an idea of the proper amount of travel. I also noticed the pedal is coming through the floor a lot lower than the original stock location. On my 57 truck when I put the pb kit on the pedal still came through the firewall at the original location. The only thing I may change yet on mine is I might cut the pedal arm so it's shorter and closer to floor so it's closer to the gas pedal. For now I'll wait and try it driving. The location you have now for your pedal may work better if you take some of the curve out of the arm. Right now it looks like you won't be pushing down with your foot, but more in a forward motion.
How did shortening your pedal on your 57 come out? Thinking of doing same thing on my 57. Thanks
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Old 12-23-2013, 06:49 AM
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bk peddle

as a rule of thumb the peddle pivot point is around 7:1 ratio.. this is mainly for a Tbucket that usually do not have power brakes.
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Old 12-23-2013, 03:33 PM
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...and about 6:1 when assisted.
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Old 12-23-2013, 11:47 PM
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Seven year old thread, artillerystevens is long gone! Seems his brakes failed and he was never heard from again (I made that up, I have no idea where he is!)
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