adrianreeve
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| posted on 18/2/10 at 01:51 PM |
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Proportioning valves and iVA
Under IVA regs, can you use a proportioning valve to set the front / rear brake balance, and then fix it once set? If you can't use them, how
are people now setting their brake balance? I have sierra discs front and rear. If I can use one, has anyone used one of these, look like a good
price?
http://compbrake.co.uk/shop/product_info.php?products_id=3613
Cheers
Adrian
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cd.thomson
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| posted on 18/2/10 at 01:52 PM |
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banned under SVA and IVA im afraid.
Craig
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adrianreeve
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| posted on 18/2/10 at 01:59 PM |
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Any ideas how I can adjust brake balance then?
Cheers
Adrian
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matt_gsxr
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| posted on 18/2/10 at 02:00 PM |
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Maybe retrofit after IVA. Sometimes the permanent pins that people fit for SVA can fall out too. It is one of those things where you have to be
careful though (brakes and steering are rather important).
As an aside how do these type work? Do they just limit the maximum pressure to the rear. They don't have enough volume to do anything more
than this do they?
A bias bar works on a different principle in that you get a fixed ratio front to rear and it is linear across the range of brake pedal pressures.
Matt
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cd.thomson
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| posted on 18/2/10 at 02:04 PM |
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With full sierra gear you should have acceptable balance anyway.
Britishtrident is very knowledgeable in the area of brake balance.
Craig
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turbodisplay
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| posted on 18/2/10 at 02:23 PM |
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Its jut like a production car, you cannot adjust proportion, just fit a different preset valve.
Electronic forms of automatic adjustment is allowed (EBD) but not exactly within the relms of the average person.
Darren
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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britishtrident
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| posted on 18/2/10 at 03:45 PM |
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Few different ways of doing it the tradditional way was fit smaller wheel cylinders.
Find your donor for example Sierra 1.8 on the Brakes International Online Shop find the exact style and bore of wheel cylinders fitted, and then
look for a similar style but smaller bore cylinder from another model for example Escort Mk3 1.3 saloon
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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adrianreeve
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| posted on 18/2/10 at 03:52 PM |
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I have discs all round...
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Canada EH!
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| posted on 18/2/10 at 04:58 PM |
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OK! change the calipers to smaller units. I don't know about the UK, but here in North America when they started using discs on the front with
drums on the rear manufactureres put a small inline proportioning valve in the rear brake line to prevent rear wheel lockup. You might find one in a
breakers.
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britishtrident
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| posted on 21/2/10 at 08:11 PM |
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Best solution is probably a valve off a drum braked Mk1 Mondeo it just screws into the master cylinder port ---- only fly in the ointment is the
connection to the rear brake pipe is a non-standard size --- easy solution just cut the pipe at the scrapies and salvage the connector. After IVA you
can test the brakes without the valve and see what you prefer.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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