Steve
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Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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Been reading a bit into this, clearly its a complicated affair setting up a proper rear bias, and ideally should be done with measuring equipment.
To add to the complications my stock master cylinder has the bias done courtesy of the master cylinder, quote from TIS
quote:
Vehicles fitted with the standard braking system have pressure conscious reducing valves (PCRVs) fitted in the master cylinder outlet ports. The PCRVs control the hydraulic pressure applied to the rear brakes reducing the risk of rear wheel lock-up under braking.
Reading this article
http://www.stoptech.com/tech_info/wp_proportioning_valves.shtml
Suggests that sticking a proportioning inline with a stock bias system already in place is a big no no and can produce unpredictable results, tbh this was my thoughts anyway.
Also it points out that putting better brakes on the front will increase front bias and removing weight out the back increases rear bias.
Taking into account it also advises where possible to just leave the stock system as is, is it worth just leaving it judging by iv altered biases front and rear and potentially have just evened each other out?
If i do stick a rear bias valve in, is there an easier way to get it roughly right?
PS 3rd party tandem master cylinder not an option at the moment, thats a plan for the future so no suggestions about that please
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mwg
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Registered: 19th Feb 04
Location: South Lakes
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Dont mean to be rude mate but how often are you actually using this car on track to bother with half this stuff 
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Steve
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Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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adjusting the rear bias is vital for all situations, not just on track, otherwise why would manufacturers need to adjust it just for road cars.
as i have fitted the larger front brakes and taken all the weight out the rear its pretty important it gets set correctly regardless, it affess ALL braking situations
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Jake
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Registered: 24th Jan 05
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the answer is..
sometimes
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mwg
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Registered: 19th Feb 04
Location: South Lakes
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so if you hadn't bothered taking all the weight out the rear you wouldn't be in this situation
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Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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this isnt really helpful to my problem matthew
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Jon_C
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Registered: 7th Dec 05
Location: Suffolk
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quote:
Originally posted by mwg
so if you hadn't bothered taking all the weight out the rear you wouldn't be in this situation
Boy likes making work for himself.
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Steve
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Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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anyone got any useful info with regards to my first post ?
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smcGSI16V
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Registered: 26th May 03
Location: Farnborough Drives: Thurlby 888 CDTi No.98
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stfu.
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Jake
Member
Registered: 24th Jan 05
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take it somewhere proper to get set up. its just as important as steering geometry and that isnt something you try and wing on your driveway
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Steve
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Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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yeah i think you may be right jake loxham of milton keynes
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tom_simes
Show Staff
Organiser: South Wales
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Registered: 12th Jan 05
Location: Undy, Newport Drives: Skoda Octavia vRS estate
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I suggest you fit a 3rd party tandem master cylinder, that should help.
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Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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thats where it will go eventually, but its a bit of a faff as will need new brackets etc welding in
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smcGSI16V
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Registered: 26th May 03
Location: Farnborough Drives: Thurlby 888 CDTi No.98
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quote:
Originally posted by Steve
Taking into account it also advises where possible to just leave the stock system as is, is it worth just leaving it judging by iv altered biases front and rear and potentially have just evened each other out?
answered your question.
Leave it as it is.
All your doing is confusing the issue, over thinking and blowing your small mind.
Do you want a fight, bearing in mind I have a skin head and you will lose?
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Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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well up for that
i think leaving it is a good idea until i have a suitable MC
then doing what jake said and take it somewhere to get setup
[Edited on 07-09-2011 by Steve]
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smcGSI16V
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Registered: 26th May 03
Location: Farnborough Drives: Thurlby 888 CDTi No.98
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Yes. Tbh unless you are changing to complete sperate system and ditching the oe mc and changing to pedal box seperate resoviours for front and rear, then I would worry about rear brake bias, but whilst it's done for you in the existing mc; or like a corsa with a rear brake proportioning valve thingy it's pretty pointless.
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Jake
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Registered: 24th Jan 05
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if steve also shaved his head it would be evenly matched though
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smcGSI16V
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Registered: 26th May 03
Location: Farnborough Drives: Thurlby 888 CDTi No.98
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But I am more man than him and have more meat so he would still lose.
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Gary
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Registered: 22nd Nov 06
Location: West Yorkshire
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You would really get along with a mate of mine, he'll obsess over everything he reads.
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AndyCorsaSport
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Registered: 12th Feb 06
Location: Horsforth, West Yorkshire
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Just cut a hole in the wheel arch so you can put you foot on the wheel like you did as a kid on your bike
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Rob B
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Registered: 8th Jan 04
Location: Area Motorsport Drives: Race EP3
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Me and Ollie both agree you should use the bloody thing!
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FlaFFy_91
Premium Member
Registered: 30th Sep 08
Location: Formby, Merseyside
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quote:
Originally posted by Steve
anyone got any useful info with regards to my first post ?
haha steve the irony of this sentance comeing from you
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IvIarkgraham
Premium Member
Registered: 27th Mar 04
Location: Ellesmere Port, Cheshire
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chuck an anchor out the window
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mwg
Member
Registered: 19th Feb 04
Location: South Lakes
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quote:
Originally posted by Jon_C
quote:
Originally posted by mwg
so if you hadn't bothered taking all the weight out the rear you wouldn't be in this situation
Boy likes making work for himself.
Yep. Stripped the interior of the car which has ended up creating more problems like this and also the fact its now unbearable to use on a daily basis but he won't admit that to us. Kicking himself that he went to the tip with all the interior now and secretly wishes he could put it back in
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John
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Registered: 30th Jun 03
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Will be really good for driving round a tiny bit of Germany once a year though 
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