hydraulic hand-brake
Thread Starter
Le Mans Master
Joined: Aug 2002
Posts: 8,222
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From: Norfolk VA
hydraulic hand-brake
Ignoring the reasons why for now...lets say that someone wanted to replace the factory parking brake with a hydraulic hand brake that would tap into the rear brake lines and activate the rear calipers.
Assuming that it is only used as a parking brake when the vehicle is stopped, how would the ABS react to this?
Assuming that it is only used as a parking brake when the vehicle is stopped, how would the ABS react to this?
Safety Car
Joined: Aug 2000
Posts: 4,933
Likes: 30
From: San Rafael CA
The real issue is this ... disc brakes make shi**y parking brakes. That's why on most "expensive" cars (Jag, Corvette, German brands .... etc.) almost all have a drum brake set up for the parking brake.
The ABS wouldn't be an issue, per se, but how would you "pressurize" the hydraulic brake system without the fluid simply flowing back into the fluid reservoir (much as it does when you install new pads and push the pistons back into the calipers) ??
You'd need to find some way to pressurize the master cylinder itself, or figure out a way to keep the pressure from getting back to it.
Not saying it can't be done ... just can't see that the "benefit" is greater than the cost, and the downside is you end up with a MUCH weaker parking brake (disc) than you have now (drum).
The ABS wouldn't be an issue, per se, but how would you "pressurize" the hydraulic brake system without the fluid simply flowing back into the fluid reservoir (much as it does when you install new pads and push the pistons back into the calipers) ??
You'd need to find some way to pressurize the master cylinder itself, or figure out a way to keep the pressure from getting back to it.
Not saying it can't be done ... just can't see that the "benefit" is greater than the cost, and the downside is you end up with a MUCH weaker parking brake (disc) than you have now (drum).
