markal
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| posted on 8/2/07 at 09:18 AM |
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How high master cylinders?
When fitting floor mounted pedal boxes, the master cylinders have to be higher than the callipers, by how much, so the fluid cannot flow back, or
can you fit one way valves, regards Alan
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Agriv8
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| posted on 8/2/07 at 09:45 AM |
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if they have integeral resevior they would have to be higher. but suly if you are using a remote resovior its the resovior that has to be higher. ( i
think ? )
but on both cases not sure by how much, my remote resvior will be about 12 - 14 inches above the mast cylindars.
regards
agriv8
Taller than your average Guy !
Management is like a tree of monkeys. - Those at the top look down and see a tree full of smiling faces. BUT Those at the bottom look up and see a
tree full of a*seholes .............
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nick205
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| posted on 8/2/07 at 09:46 AM |
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The master cylider(s) don't need to be higher than the calipers. Assuming the system is sealed correctly and blead correctly to remove any air
then it is closed hydrualic system. Once you take your foot off the pedal, the fluid should return to the master cylinder/resevoir.
(or have I misunderstood the question?)
[Edited on 8/2/07 by nick205]
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RazMan
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| posted on 8/2/07 at 09:55 AM |
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Ideally the reservoir needs to be a little higher than the m/c & calipers but you can get away with mounting it anywhere really as gravity
doesn't really come into it after the initial fill-up - it can make bleeding a little easier though.
[Edited on 8-2-07 by RazMan]
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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02GF74
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| posted on 8/2/07 at 10:03 AM |
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can't see how the fluid could flow from the calipers into the master/reservoir if these were lower - if it could. then a vacuum would be
created and that is not possible unless there is a leak.
but seeing as I've yet to come across a car that has brkae or clutch master lower than calipers, then maybe there is something I (we?)
don't know about?
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James
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| posted on 8/2/07 at 10:08 AM |
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quote:
Originally posted by 02GF74
but seeing as I've yet to come across a car that has brkae or clutch master lower than calipers,
Mine!
Passed SVA 6mths ago.
In fact loads of car have them lower! Most Indy's for a start.
Cheers,
James
Bob's:
 
brake run and steering ext
[Edited on 8/2/07 by James]
------------------------------------------------------------------------------------------------------------
"The fight is won or lost far away from witnesses, behind the lines, in the gym and out there on the road, long before I dance under those lights."
- Muhammad Ali
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nitram38
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| posted on 8/2/07 at 10:50 AM |
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Most formula fords have their master cylinders lower than the wheels.
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markal
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| posted on 8/2/07 at 11:34 AM |
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Thanks for the replies, problem solved, regards Alan.
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procomp
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| posted on 8/2/07 at 03:10 PM |
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Hi having the reservoir lower than the calipers has been known to give some problems which can be overcome whith
THESE valves available with 2lb residual pressure held on. Also helps
decreace some pedal travel problems.
cheers matt
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gazza285
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| posted on 8/2/07 at 09:23 PM |
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quote:
Originally posted by 02GF74
can't see how the fluid could flow from the calipers into the master/reservoir if these were lower - if it could. then a vacuum would be
created and that is not possible unless there is a leak.
What can happen is the fluid flows from the calipers into the reservior and the volume is reduced by the caliper pistons retracting into the caliper.
Next time you push the pedal the pistons need pushing out a long way leading to brakes that need pumping to work. Rare though.
DO NOT PUT ON KNOB OR BOLLOCKS!
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JB
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| posted on 11/2/07 at 07:14 PM |
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MC & Caliper Positions
I have run integral resovoir MC`s lower (floor mounted) than my calipers with no problems what so ever.
My latest car runs floor mc`s with the resovoirs mounted around the diff (for weight distribution) at the rear, again a rock solid pedal all the time
and no problems.
John
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markal
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| posted on 12/2/07 at 07:29 PM |
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Thanks for all the replies, regards Alan
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