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10-08-2004, 09:00 PM
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#1 |
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Señor Member
Join Date: May 2002
Location: Edge of the world
Posts: 5,367
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Brake booster/master cylinder "throw" required
How much throw is required on the rod/shaft thingie to properly engage your run-of-the-mill GM booster and master cylinder?
That is... how far does the shaft that stabs into the booster move when depressing the brakes? In my new cab, I'll be locating the booster and master cylinder under the passenger side of the dash (don't ask... I was dropped on my head as a baby  ). I'm going to have to make a bellcrank mechanism to turn the brake pedal moving axis sideways and drive a rod side to side under the dash to press the booster/mc. What I'm wanting to work out at this point are the dimensions and angles for the linkage.Here's a reallllly bad sketch of what I'm contemplating...
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12-25-2004, 12:17 PM
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#2 |
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Señor Member
Join Date: May 2002
Location: Edge of the world
Posts: 5,367
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Anyone? Bueller? Anyone?
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12-25-2004, 01:27 PM
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#3 |
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Just here to help
 
Join Date: Jan 2002
Location: Norwood,Mo
Posts: 3,890
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I dont have a answeer for ya but i really like your idea,take lots of pic because i think alot of people will like how it turns out.It should really kleen up the inside of the engine compartment.
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12-25-2004, 02:32 PM
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#4 |
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Hittin E-Z Street on Mud Tires
Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
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How are you going to fill it full of fluid and bleed it without squirting juice all over the cab. Brake fluid EATS paint like a mo-fo. I learned that after I had to repaint my booster and DS inner fender
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Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride  American Born, Country by the Grace of God  1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications! |
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12-25-2004, 03:03 PM
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#5 | |
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Señor Member
Join Date: May 2002
Location: Edge of the world
Posts: 5,367
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Quote:
It's actually standard fare in the rod world to have this stuff inside the vehicle... you've just got to put down plenty of plastic sheeting, get creative with your filling process, and then pray to the carpet gods that you don't spill. 
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12-25-2004, 03:29 PM
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#6 |
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Senior Member
Join Date: May 2004
Location: Queen Creek, AZ
Posts: 1,010
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I am pretty sure Kugel Komponents has a kit for this. Sorry I do not know how to link this, but I am sure you can find them using Google...
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12-25-2004, 10:33 PM
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#7 | |
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Señor Member
Join Date: May 2002
Location: Edge of the world
Posts: 5,367
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Quote:
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12-26-2004, 01:51 PM
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#8 |
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PROJECT 7DEUCE
Join Date: Dec 2002
Location: GRANTS PASS OR
Posts: 21,606
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If I can go out and depress my brake pedal and measure the rod travel I can get that done with in an hour if this is what you need..
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GO BIG GREEN GO DUCKSMEMBER #6377 72 k-5 daily driver 6'' lift 35'' 350-350-205 slowly getting rust free. Project "7DEUCE" check out my build http://67-72chevytrucks.com/vboard/s...d.php?t=267665 Tim Powell..R.I.P EastSideLowlife..... R.I.P.. |
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12-26-2004, 04:59 PM
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#9 | |
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Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 22,068
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Quote:
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67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
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12-27-2004, 12:45 PM
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#10 | |
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Señor Member
Join Date: May 2002
Location: Edge of the world
Posts: 5,367
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Quote:
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12-27-2004, 01:49 PM
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#11 |
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PROJECT 7DEUCE
Join Date: Dec 2002
Location: GRANTS PASS OR
Posts: 21,606
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Looks to be 1 1/8
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GO BIG GREEN GO DUCKSMEMBER #6377 72 k-5 daily driver 6'' lift 35'' 350-350-205 slowly getting rust free. Project "7DEUCE" check out my build http://67-72chevytrucks.com/vboard/s...d.php?t=267665 Tim Powell..R.I.P EastSideLowlife..... R.I.P.. |
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12-27-2004, 09:35 PM
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#12 |
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Registered User
Join Date: May 2002
Location: North Carolina
Posts: 1,234
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I would think that as long as there is some "free play" at the pedal and the booster rod is completely releasing from the M/C you're ok.............or did I misunderstand the question?
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Stepsides look like real trucks! Smitty 
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01-20-2005, 10:07 PM
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#13 |
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Señor Member
Join Date: May 2002
Location: Edge of the world
Posts: 5,367
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Modding the brakes, μ-progress
I've been slowly assembling pieces and parts to get my brake setup into the new cab-- booster and MC are going under the dash, parallel with the dash, behind where the radio used to be. I drew the linkage changes I needed to make, then mocked it up in cardboard. I fabbed up a bracket that holds the horizontal 90° pivot point and welded it to the modded (for several reasons) column bracket under the dash. Next, I need to make the pivot bracket (the cardboard piece below... turns out cardboard won't be strong enough
 ). From there I'll need to finish the brake booster/mc mount bracket under the dash, and then plumb it. I'm still looking for the right push rod that goes into the booster... Anyone? Bueller? Anyone?Obligatory pics of the pivot bracket mockup--
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