big_wasa
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| posted on 19/4/09 at 07:22 PM |
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Iva Bias bar your opinions pls?
Ive made a sort of non adjustable bias bar for the iva so that I dont have to weld mine up.
Ive set it to about 80% front. But if its wrong I can just cut two new grooves for the cir-clips and move the bearing along. You wont be able to see
that as it sits in the pedal bush 
When set I will fit a couple of roll pins.
What do you think ? Will it pass if it gives the correct braking.
cheers
[Edited on 19/4/09 by big_wasa]
 
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dinosaurjuice
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| posted on 19/4/09 at 07:24 PM |
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i dont see that as being adjustable. therefore i think it wil pass.
edit: nicely made BTW. theyll be a waiting list to borrow that for iva 
[Edited on 19/4/09 by dinosaurjuice]
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blakep82
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| posted on 19/4/09 at 07:34 PM |
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i want one 
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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robinj66
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| posted on 19/4/09 at 10:23 PM |
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It does look a lovely piece of kit but, according to the article in the latest Complete Kit Car, the IVA want a bioas bar to be "permanently
rendered unadjustable".
Roll pins were acceptable for SVA but apparantly will not be good enough for IVA
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MikeRJ
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| posted on 20/4/09 at 08:18 AM |
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quote:
Originally posted by robinj66
It does look a lovely piece of kit but, according to the article in the latest Complete Kit Car, the IVA want a bioas bar to be "permanently
rendered unadjustable".
Since big_wasa's design is inherently non-adjustable, that should not be a problem.
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Mix
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| posted on 20/4/09 at 05:35 PM |
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Hi
I think the theory is good 'in principle' however I would be concerned that drilling the bias bar where you have significantly reduces
it's strength. In my opinion its better to secure at a point outside of the clevis. Otherwise an interesting exercise, look forward to news as
to how it's received at IVA.
Regards Mick
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big_wasa
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| posted on 20/4/09 at 08:41 PM |
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It only needs to last for a short time
Its a 4mm pin through a 7/16 bar.
Any one want to do the maths for me ?
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Bob C
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| posted on 22/4/09 at 11:55 AM |
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You don't have a problem, there is very little stress of the bar where there's a hole through it. Your stress raisers are the circlip
grooves..... keep them as shallow as you dare....
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MikeRJ
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| posted on 22/4/09 at 11:14 PM |
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quote:
Originally posted by Bob C
You don't have a problem, there is very little stress of the bar where there's a hole through it. Your stress raisers are the circlip
grooves..... keep them as shallow as you dare....
Always thought they were a bit of a poor design, the threaded sections don't help either. Then again I guess the bars are plenty strong enough
since I've not heard/read of any failures.
One of the previous owners of my Stiker thought that a piece of M6 stud would make an effective bias bar, I had a shock when I removed the pedal box
cover and found the tiny, banana shaped bar. The most worrying thing of all is that it was a track car and had passed scrutineering many times
judging from all the tickets I found stuck to the transmission tunnel.
I'll take a pic when I remember, a kind of "how not to make a bias pedal box" 
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