New Master Cylinders / Brake Bias
Orig. Posting Date | User Name | Edit Date |
Jun 17, 2019 09:07AM | Spitz | |
Jun 17, 2019 03:14AM | bikewiz | |
Jun 16, 2019 09:29PM | Spitz | |
Jun 13, 2019 10:01AM | bikewiz | |
Jun 12, 2019 07:13PM | Spitz | |
Jun 11, 2019 06:06PM | CooperTune | |
Jun 11, 2019 03:40PM | Rosebud | |
Jun 11, 2019 03:06PM | CooperTune | |
Jun 11, 2019 02:09PM | Rosebud | |
Jun 11, 2019 04:21AM | Dan Moffet | |
Jun 10, 2019 08:27PM | Rosebud | Edited: Jun 10, 2019 08:30PM |
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"Everybody should own a MINI at some point, or you are incomplete as a human being" - James May
"WET COOPER", Partsguy1 (Terry Snell of Penticton BC ) - Could you send the money for the unpaid parts and court fees.
Ordered so by a Judge
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I ma have fitted the wrong ones...as I have a single system. Damn it
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I ma have fitted the wrong ones...as I have a single system. Damn it
"Everybody should own a MINI at some point, or you are incomplete as a human being" - James May
"WET COOPER", Partsguy1 (Terry Snell of Penticton BC ) - Could you send the money for the unpaid parts and court fees.
Ordered so by a Judge
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Somewhat related question.....and save starting a new thread.
Regarding rear cylinder bore size;
I have twin leading up front.... single line system. I installed all new wheel cylinders with 3/4" in back. I have a lot of pedal travel after everything is adjusted up and bled properly.
Will 5/8" in the rear help fix this?..... ie: smaller bore, less volume
"Everybody should own a MINI at some point, or you are incomplete as a human being" - James May
"WET COOPER", Partsguy1 (Terry Snell of Penticton BC ) - Could you send the money for the unpaid parts and court fees.
Ordered so by a Judge
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If you apply say 50 lbs of force to a cylinder with 1 sq. inch of area, you'd get 50 psi.
If you apply the same 50 lb force to a cylinder with 2 sq. in of area you get 25psi.
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If you apply say 50 lbs of force to a cylinder with 1 sq. inch of area, you'd get 50 psi.
If you apply the same 50 lb force to a cylinder with 2 sq. in of area you get 25psi.
.
"Hang on a minute lads....I've got a great idea."
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About a year ago I noticed that a fine, black particulate material would gather at the bottom of the front master cylinder. I'd use an eyedropper to pull the black junk out and top off the fluid. I even flushed the entire system a couple of times, but the black crud would reappear. After the pedal went to the floor, it occurred to me that the black stuff was probably a deteriorating O-ring. Since a rebuild kit was half the price of a new master cylinder, I dumped the Girlings and popped for 2 new Welwood masters.
Well, the bias problem returned in a big way. I had the bias bar and the bias valve maxed. I had the rear brake cylinders backed off so far my hand brake barely worked. I combed YouTube for clues and found a video by Tilton that offhandedly mentioned, "Of course, on a dual system you'll want to install the largest bore cylinder on the rear circuit." Wait! What?
A call to Tilton's tech-ref confirmed; the larger bore cylinder goes on the rear circuit, the smaller on the front. I've always had it the other way around. It just seemed to make sense—biggest brakes, biggest cylinder. Once I swapped the cylinders and readjusted the bias bar, valve, and brake cylinders to a more neutral position, my front/rear bias is spot on. My hand-brake even works again. Who knew?