REFLECTOR: Leaking Brake Master cylinder

Brian Michalk michalk at awpi.com
Thu Feb 14 10:11:49 CST 2008


Are you talking about max operating pressure?

pi * (5/8)^2 = 1.227 ~ 1.25 in^2
needs 360lbs of plunger force.

Same diameter as the originals, so performance would be identical.

NMFlyer1 at aol.com wrote:
> Brian & Or Jim,
>  
> Have you checked the pressure of the cylinders?  I noticed in the 
> paperwork I got back with my Matco brakes that they need at least 450 
> PSI to work right. (There was an upper limit too but I can't recall it 
> off the top of my head). I'm hoping that my upgraded ones work ok... 
> but Jim's data suggests they still may be marginal.
>  
> I find that strange. The brakes on my Cherokee 235 are half the size 
> of the Matco's.. I mean they are really small for the 2900 pound gross 
> weight. But they work just fine.
>  
> Kurt
>  
>  
>  
>
>
>
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