hello all

i ve just read coredevelopements SVA thread, hard luck mate, and read this

"last but not least the main one which prevented the others being sorted on site.
I FORGOT TO DRILL AND PIN THE BLOODY BIAS BAR!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! "

can some one explain what this is and pics would be a big help

ive got my SVA on the 28/7/08 and this is the first time i ve heard of this

cheers

you simply have to pin the threaded rod so that it cannot be turned while driving the car, like many folk can drive while their head is in the footwell and adjusting the pedals

[Edited on 10/7/08 by Mr Whippy]

Hi

If you're using a bias bar set up then the SVA requires that at both extremes of bar adjustment the rear wheels lock before the fronts when braking. The limits of the bar adjustment must be 'permanantly' locked and in the eyes of the SVA this does not normally mean using split pins, however roll pins are considered acceptable. I don't have any pictures of roll pins to hand but a quick google will show you what they are. Easy enough to fit and cheap.

Regards Mick

Hi

Also meant to make the point that as I see the SVA regs it is perfectly acceptable to have adjustable brake bias as long as it is not possible to adjust whilst driving.

Regards Mick

hi

thanks for the replys

it was the first time i had come across this needing done, just aswell i stumbled accross it

so basically a pin either side of the peddle drilled and fitted in to the bias bar

spot on

cheers

Hi

No, you don't want to drill the bar in the loaded area and weaken it. You want to drill through the nuts on the outside of the master cylinder clevises and pin the nuts to the bar.

Regards Mick

Hi

See here, http://www.wilwood.com/Products/005-PedalAssemblies/Pages/techtip/pedaltech.asp
You will need a nut on both sides of the bias bar, (the pictures show only one), and it is these nuts that need to be roll pinned or welded to the bar.

Regards Mick

Am I right in thinking then you need to set up the brakes before you get to the sva test so you can't move the bar once drilled and 'set' ?

Jason

Hi Finlay,

Here is a pic of mine, done at the SVA testing station after the test. The examiner let me do it at the end after he had checked it was all adjusted right.

I had pre drilled the nuts so I just had to drill the bar and put roll pins in.
Rescued attachment P1010105.JPG

Pre drilled nuts, darn good idea !! no wonder my car has taken so long !!

Jason

quote:

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Originally posted by Mix
Hi

If you're using a bias bar set up then the SVA requires that at both extremes of bar adjustment the rear wheels lock before the fronts when braking.

Regards Mick

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is it acceptable to drill a hole, through the ends of the bar, and then fit a spacer tube to take up the space between?

i have modified one of the pics from the wilwood site

so as you can see.. nuts pinned at the far end, and the red bit is a spacer tube in between...

is this allowed? this way you have the bar, and nuts pre drilled, all you have to do is take some tube, then cut it to length, slide it in place, and then fasten on the nut, and push in the roll pin... no need to struggle in the footwell trying to drill any holes Image deleted by owner

quote:

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Originally posted by jollygreengiant

quote:

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Originally posted by Mix
Hi

If you're using a bias bar set up then the SVA requires that at both extremes of bar adjustment the rear wheels lock before the fronts when braking.

Regards Mick

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I think you will find that this is wrong and the fronts should lock before the rears.


Stands ready to get flamed on this.

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Davey, Yes this would be ok. It is better to have a spacer that way the clevises would be able to move without being fouled by the nut.
I made my spacers out of black nylon you can see them in the photo. I would have liked a tubular spacer but couldn't find anything with the correct internal and external diameters.

[Edited on 10/7/08 by stuart_g]

thanks for that Stuart

what size and thread are the Bias bar nuts ?

[Edited on 11/7/08 by finlay]

Thanks Mick for the willwood link

Hi

Cheers JGJ and Dave for correcting my error, what was I drinking at the time? Sorry for any confusion caused..........walks away in shame.

Regards Mick

quote:

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Originally posted by finlay
thanks for that Stuart

what size and thread are the Bias bar nuts ?

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Aren't there thes wonderful things called washers? I'm fairly sure they do 'em in 7/16" and you just adjust how many you use rather than cutting tube.... Or am I missing something?