Iain
Part of things
Posts: 351
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I have a twin master cylinder set up, brake bias rally style affair, balance bar etc. Two Wilwood cylinders. I am thinking of spacing the rear cylinder out, basically to try and stop the rear from locking up. It may work, it may not, but I'm going to try. Anyone know of a good source of this style part, or maybe a car similar is fitted to in the scrappy? I believe this part is an E-type item:
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Hi, The rears locking up is a product of the mismatch of the master and wheel cylinder bore sizes. Fitting the spacer will just move the master to a different physical location.
Colin
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Iain
Part of things
Posts: 351
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The rear cylinder travels a lot less than the front one. My thinking was that upon pressing the brakes, the rear will be 'biting' first, then with enough pressure the balance bar will swing round and the fronts will eventually bite.
It's something I'd like to try anyway - get the balance bar as close to straight as possible with braking pressure applied. I don't have much in the way of pushrod adjustability so am going to space it.
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Hi, You alter the front/rear bias by moving the pivot point of the balance bar so each master is pushed more or less than the other.
Colin
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Iain
Part of things
Posts: 351
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Yep done that, but the 'bite point' of each cylinder differs and in my mind the bar should be straight at that biting point
With the balance bar in the middle, but very wonky at the point both cylinders are working, does it actually apply the same pressure across both?
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Last Edit: Mar 7, 2016 14:32:54 GMT by colnerov
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Iain
Part of things
Posts: 351
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From the link: Edit: pic as transparent background! Link: www.wilwood.com/Images/TechTip/Pedal/figure2.gifI'm trying to achieve that, but without much adjustment on the push rods. By spacing the rear one, it essentially cocks the balance bar leading to it being straight under moderate braking pressure.
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Last Edit: Mar 7, 2016 15:11:24 GMT by Iain
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jasonj
Part of things
Posts: 220
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Just out of interest what size cylinders do have for the front and back. I'm wondering if the larger of the 2 has been used for the front which would result in the problem you have.
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Team Supercharged Opel Ascona 400. 294bhp - 235 lb/ft
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Iain
Part of things
Posts: 351
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0.625 front and 0.75 rear.
Wilwood 4 pot front calipers, single pot sliding rear calipers. Not got piston sizes to hand.
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