Benzo
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| posted on 21/12/10 at 05:34 PM |
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Fitting pedal box with Brake Bias adjustment.
Hi guys,
Im running a westfield megablade as a race car here in a NI7's championship in N.Ireland... we run regulations similar to the English RGB
Championship, 2010 was my 1st season and i ran the car fairly standard with an AB 919 engine, This winter im focusing on upgrading a few things,
Brakes have been my main focus.. i want install a new pedal box with dash mounted brake bias adjustment & upgrade my pads.
My car at the min is running bremsport front calipers with unknown pads & Sierra Rears with standard ford pads.
I think the car is braking too much on the rear and i intend to put in some proper testing this winter to try and get my lap times down.
I have a local guy set to install the system, i would attempt most work but this is something i know nothing about. He has told me if i get him the
bits he will install the kit.. but i don't really know what i need, I presume a pedal box, and a pair of master cylinders?
The car being a blade engine runs a cable clutch, and a lot of the pedal boxes i have looked have the clutch pedal attached to but for a hydraulic
clutch. can anyone point me in the direction of -
A) a pedal box that will do my job, remote adjustment & bias bar.?
B) which master cylinders should i buy? what size for the bremsport fronts and sierra rears?
And
C) some polymatrix E Pads for the bremsports and some DS2500's for the sierra Rears?
Here are a few pics of my current setup -
All advice and information greatly appreciated!
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Benzo
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| posted on 21/12/10 at 05:55 PM |
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am i after this kind of thing? is this the kind of money they are?
http://obpltd.com/index.php?page=shop.product_details&flypage=flypage.tpl&product_id=706&category_id=214&option=com_virtuemart&Ite
mid=2
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britishtrident
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| posted on 21/12/10 at 08:29 PM |
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With a racer before you can even think about fine adjustment of the brake balance I would suggest getting the corner weights as close to correct as
possible and fitting brake pads that are matched in friction - friction coefficient v temperature characteristic otherwise the brake balance will
change with every corner
Normally if you have too much rear brakes you will know all about very quickly,but if only one rear wheel is locking it points to corner weights.
Normally on a racer brake bias is set up at the start of the season and only altered by usually only about 1- 1.5 turns towards the rear for wet or
slippery conditions, a dashboard mounted adjustment knob just introduces the temptation to fiddle which can be counter productive.
One cheap simple mod you might want to try before fitting a balance bar is to fit a smaller bore master cylinder (Fiat 124/Lada or Mk1 Polo
non-servoved) and an ajustable pressure regulator valve in the rear line. this should both reduce pedal effort and allow you to control the brake
bias.
[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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Benzo
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| posted on 21/12/10 at 08:54 PM |
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I have my corner weights set up to within 8kg on the scales that we use on a race day, maybe they need abit more fettling but i will get that sorted
before the start of the season!
by reducing the effort, do you mean reducing the amount of fluid pumped? ie the bore of the cylinder? or do you mean the effort as in the amount of
effort i have to put into the pedal? such as a softer, longer pedal with more feel?
It had been suggested to me about fitting an inline valve to cut the braking to the rear. but wanted to do the job once and do it right, now that its
if the off season it makes sense to do it now.
overkill? should i try with new pads, and an inline valve 1st? or go all out and get a new pedal box in?
As i say im looking to take the racing seriously over the next few season and do the jobs once and do them correctly.
[Edited on 21/12/10 by Benzo]
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