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  #16 (permalink)  
Old 08-14-2003, 06:47 PM
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How about -this setup-? It is two piston design that does not give you the problems of a four piston caliper.

The four piston calipers you are thinking of were KELSEY-HAYES and did have a sticking problem. STAINLESS STEEL BRAKES rebuilds the caliper with stainless sleeves and tubing. They were popular on MUSTANGS, FAIRLANES and VETTES in the sixties.

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  #17 (permalink)  
Old 08-14-2003, 07:11 PM
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The Duke of URL strikes again!

KULTULZ -- I've added that link to our new disc brake conversion knowledge cluster in the KB. I'm sure you notice a decent number of the articles in there came from links in your posts. If you have any more links on that subject, please send em my way. My recent analysis demonstrated that 39% of all brakes questions asked on the board were on that subject, so hopefully we can reduce repetitive questions by compiling all of that info on one page.
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Old 08-17-2003, 07:28 AM
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Arrow

A lot of early disc brakes were 4 caliper besides the ones mentioned by KULTULZ the Lincolns and 'birds also used them (and I think Avantis too), cost to manufacture was the big downfall. Most modern sport bikes use 6 piston calipers now(some maybe even 8) and have used 4 piston ones since the early eighties (modern manufacturing has eliminated some of the cost problems). The real problem I see with the dual caliper isea isn't function,but excessive unsprung weight, that's why they go to multiple pistons. If you really want a bada$$ braking system look at aircraft (they aren't worried about unsprung weight), it is basically like a multiple disc clutch system that applies clamping force to the whole rotor(s).
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Old 08-21-2003, 07:54 AM
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All 65-70 calipers used in American cars are Bendix four piston as far as I know (that's all I've seen, mainly Ford and AMC). The bores corrode over time but that's fixed with stainless sleeving. They also tend to leak between halves, as there is a passage drilled in them to pass fluid from one side to the other, and thickness is adjusted with shims. If I were getting four or six piston brakes I'd get a caliper with an external line. It can be adjusted for thickness with simple shims, and can theoretically be used with any thickness caliper. The old ones also had solid rotors -- they need to be cross drilled or slotted to improve cooling.
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