contaminated
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| posted on 20/3/11 at 02:27 PM |
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Why do you need a diaphragm?
Why do you need to diaphragm in one of these? Seems a bit daft to me. Surely it limits the brake fluid volume and will cause it to spill everywhere
when I screw the lid on?!
http://www.cbsonline.co.uk/product/SINGLE_BRAKE_FLUID_RESERVOIR_FLRES1
Tiger Super Six Independent
www.southernkitcars.com
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r1_pete
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| posted on 20/3/11 at 02:34 PM |
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The diaphragm squashes back above the fluid, as the fluid level reduces it 'unfolds' and takes the space of that fluid, preventing the
fluid coming into contact with air.
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contaminated
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| posted on 20/3/11 at 04:06 PM |
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OK. maybe I should not have mounted it on the inside of the lid then (which looks like what is supposed to happen). When I do that the diaphragm fills
will air and wont squash!
Tiger Super Six Independent
www.southernkitcars.com
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flibble
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| posted on 20/3/11 at 04:28 PM |
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does it not squish back on itself if you squeeze it against the lid with your fingers? (so it's flat against the lid).
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britishtrident
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| posted on 20/3/11 at 04:46 PM |
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The idea is it stops moisture entering the reservoir but still allows the fluid level change due to expansion or to take up wear.
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40inches
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| posted on 20/3/11 at 04:50 PM |
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Should be a small hole in the centre of the cap to allow air to flow in/out.
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bi22le
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| posted on 20/3/11 at 06:21 PM |
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I have Willwood resivoirs and I have no Diaphragm in either of mine (front or rear). It also does have a hole in the top of the lid.
What wrong with air getting too it?
I have had no issues with my brakes at all but no feeling alittle uneasy!!
Track days ARE the best thing since sliced bread, until I get a supercharger that is!
Please read my ring story:
http://www.locostbuilders.co.uk/forum/13/viewthread.php?tid=139152&page=1
Me doing a sub 56sec lap around Brands Indy. I need a geo set up! http://www.youtube.com/watch?v=EHksfvIGB3I
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NigeEss
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| posted on 20/3/11 at 06:45 PM |
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quote:
Originally posted by bi22le
What wrong with air getting too it?
Brake fluid is hygroscopic, that is is absorbs water. More specifically atmospheric
moisture. This seriously lowers its boiling point, often by as much as 100 degrees.
Silicone based fluids are more resistant.
Time is an illusion. Lunchtime doubly so.................Douglas Adams.
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MakeEverything
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| posted on 20/3/11 at 06:56 PM |
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As above really. Hygroscopic was the word i couldnt remember.
The diaphragm seals the reservoir from the cap and its hole, so that it flexes with the fluid level as air moves in and out between the diaphragm and
the lid.
Kindest Regards,
Richard.
...You can make it foolProof, but youll never make it Idiot Proof!...
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MakeEverything
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| posted on 20/3/11 at 08:07 PM |
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quote:
Originally posted by contaminated
Why do you need to diaphragm?
or to prevent pregnancy!  
Kindest Regards,
Richard.
...You can make it foolProof, but youll never make it Idiot Proof!...
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