Brake force distribution quation.
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Post Fiend
Joined: Oct 2005
Posts: 5,242
Likes: 0
From: Kiev, Ukraine
Brake force distribution quation.
My master cylinder was just replaced, brake pedal does not go into the floor, but......
Rear wheels loks first!!!! I know that there is a proportional valve under the master cylinder that distributes brake pressure between front and rear wheels, and people say that it is possible to re-ajust it with spring replaceemnt ore adding grommets.
Is it possible?
P/S I have brake force test machine in company's workshop and I can check it. Now I have 55% on front wheels and 45on rear but I want 70% Oon front wheels.
Rear wheels loks first!!!! I know that there is a proportional valve under the master cylinder that distributes brake pressure between front and rear wheels, and people say that it is possible to re-ajust it with spring replaceemnt ore adding grommets.
Is it possible?
P/S I have brake force test machine in company's workshop and I can check it. Now I have 55% on front wheels and 45on rear but I want 70% Oon front wheels.
Post Fiend
Joined: Apr 2005
Posts: 5,720
Likes: 5
From: Washington state
was your MC replaced with exact rebuild?
if not, the front and rear chambers of the new MC have different pressures than the original Aero due to design diff.
or the new MC has leak by in front axle chamber=scratched bore or damaged seal
or the combination/proportioning valve got a piece of dirt in front brake circuit side during MC change
if not, the front and rear chambers of the new MC have different pressures than the original Aero due to design diff.
or the new MC has leak by in front axle chamber=scratched bore or damaged seal
or the combination/proportioning valve got a piece of dirt in front brake circuit side during MC change
Post Fiend
Joined: Apr 2005
Posts: 5,720
Likes: 5
From: Washington state
most proportioning valves are engineered and calibrated for a designed front pad/rotor and rear brake/drum friction coefficient.
this is where many guys get into problems changing to the latest new fangled kryton/ceramic bullet proof brake pads and cyro rotors and then wonder why their rig slides sideways or goes in circles when they stand on the brakes.
try to duplicate the original Ford semi metallic pads in friction coefficient... the original rear brakes were organic FF friction coefficient rated material
i'd rather have the backs lock up first and the fronts to keep on steering....we can learn to pedal pump modulate the lockup braking ourselves
this is where many guys get into problems changing to the latest new fangled kryton/ceramic bullet proof brake pads and cyro rotors and then wonder why their rig slides sideways or goes in circles when they stand on the brakes.
try to duplicate the original Ford semi metallic pads in friction coefficient... the original rear brakes were organic FF friction coefficient rated material
i'd rather have the backs lock up first and the fronts to keep on steering....we can learn to pedal pump modulate the lockup braking ourselves
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Post Fiend
Joined: Oct 2005
Posts: 5,242
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From: Kiev, Ukraine
I used to think to install 4s/3m ABS by Haldex ore Wabco. But first I want to convert my aero to LPG and may be swap 3.0 to 4.0
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