- Joined
- Aug 18, 2008
- Messages
- 4,081
Lots of people keep asking about converting rear drums to disks.
Understand this one point.
Disk brakes alone are LESS powerful, per unit pressure, than the equivalent drum brakes.
What I mean by that is that if you dump 500psi into a drum brake, you might get 250lbs of brake force out of it, but if you dump the same 500psi into a disc brake, you might only get 150lbs brake force out of it.
Changing the rear brakes does not change the fluid pressure in the system, so by fitting disc brakes and doing nothing with the proportioning, you are actually reducing the performance of the rear brakes.
Everyone knows how effective drum brakes are for handbrake turns, and in comparison how rubbish disk handbrakes are at even holding the car on an incline. This is a prime example of the fixed input (arm force x handbrake lever length) vs the brake force applied.
Discs are weak, they need lots more pressure to function correctly. Take some time and do upgrades properly, otherwise you're just wasting your money.
Understand this one point.
Disk brakes alone are LESS powerful, per unit pressure, than the equivalent drum brakes.
What I mean by that is that if you dump 500psi into a drum brake, you might get 250lbs of brake force out of it, but if you dump the same 500psi into a disc brake, you might only get 150lbs brake force out of it.
Changing the rear brakes does not change the fluid pressure in the system, so by fitting disc brakes and doing nothing with the proportioning, you are actually reducing the performance of the rear brakes.
Everyone knows how effective drum brakes are for handbrake turns, and in comparison how rubbish disk handbrakes are at even holding the car on an incline. This is a prime example of the fixed input (arm force x handbrake lever length) vs the brake force applied.
Discs are weak, they need lots more pressure to function correctly. Take some time and do upgrades properly, otherwise you're just wasting your money.
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