tony.g
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| posted on 29/6/12 at 03:58 PM |
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Brake Bias Valve
Hi, I have a Stuart Taylor running drums at the rear and Cortina discs up front with twin master cylinders.
On track if i brake too hard it just locks the front wheels.
Has anyone had this problem,I was thinking of fitting a brake bias valve in the front system.
What do you think?
Any advice would be welcome.
Cheers
Tony
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britishtrident
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| posted on 29/6/12 at 04:30 PM |
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Really not a good idea never fit a pressure limiting valve in the front brake circuit.
The brake balance bar should be set so as the front brakes lock just before the rears on dry road with a good surface. On balance bar setups the
difference between w wet setup and a dry setup is generally roughly about one to 1.5 turns towards the rear for wet conditions.
Be aware if the rear brakes lock prematurely (ie before the fronts) it will spin you into the barrier n the blink of an eye.
If your balance bar-up is not changing the brake bias enough then first check the bias bar is setup correctly moves freely with sufficient clearance
to allow the balance bar freedom to pivot enough to work.
If you still have too much front brakes then you need to consider changing the diameters ofa master cylinder or rear wheel cylinders to alter the
hydraulic ratio.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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Westy1994
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| posted on 29/6/12 at 04:42 PM |
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I have to agree with Trident above.
I used to sprint and hillclimb an old classic Triumph, after I upgraded the front brakes I found the standard rear drums to be useless, so I upgraded
these to the bigger versions that Triumph used on their bigger models, this included the drums, wheel cylinders and master cylinder. This as it worked
out gave me too much rear bias and the rears would lock under very hard breaking, doing exactly what Trident has described. I ended up fitting a valve
in the rear line to reduce this and eventually ended up with a decent setup.
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