Hi can a car with a bias bar pass with a bias bar adjuster on the dash? If so how do you lock it, any pics and places to buy aswell?
Cheers
Adam
I Dont think so, as the point of locking it for sva is so it can't be adjusted.
Hi, John how did you lock yours for sva as basically thats all i want to do with as little fuss as possible but on the mnr forum marc said to get a
bias adjuster and lock that but ive never seen one done before
[Edited on 11/3/09 by bassett]
Hi Adam
i just used 4 half nuts 2 on each side just to lock it in place.
also so i could adjust it if needed. i pre drilled two of them slightly just so it would make it easy to drill at the center.
tester was fine for me to rollpin at home as they were locked with the halfnuts anyway.
i'd like to see marcs idea
I got one from MNR last week.
Marc said to drill into the face of the adjuster wheel into the cable housing at the rear, then pin.
A much easier way than scrambling around in the foot well.
thanks, ive been looking for a simpler solution than drilling at the test station. Did yours get through with non nyloc nuts as ive got 4 regular
nylocs that i could chop and use either end.
Cheers
I think it depends on how the examiner wants to interpret the rules but my understanding was that you could pass with a pinned dash-mounted adjuster. Which kind of removes the whole point of having a dash-mounted adjuster but hey....
quote:
Originally posted by BenB
I think it depends on how the examiner wants to interpret the rules but my understanding was that you could pass with a pinned dash-mounted adjuster. Which kind of removes the whole point of having a dash-mounted adjuster but hey....
quote:
Originally posted by Wheels244
quote:
Originally posted by BenB
I think it depends on how the examiner wants to interpret the rules but my understanding was that you could pass with a pinned dash-mounted adjuster. Which kind of removes the whole point of having a dash-mounted adjuster but hey....
Agreed - but my pin may vibrate out after SVA
Ive already drilled holes through my bias bar at the ends. im also going to drill holes through the nuts so they are ready. once the bias is adjusted
properly take up the space with a shim of copper pipe cut to length ( take a bit of copper pipe, and a pipe cutter with you.
all you have to do then is slip the shim over the bar, thread the nut on until the holes in the nut line up with the holes in the bias bar, and then
push the roll pin in.. no need for awkward drilling in the footwell then :-)
For IVA the locknuts must be fully welded to the bias bar so that future adjustment is 'impossible'. For SVA the rules were less strict but
I think this gives you an idea of what they are looking for.
A dash mounted adjuster should be a fail in my opinion, locked or not - locking the control doesn't stop you adjusting it at the pedal.
As an aside, inline hydraulic bias valves are banned for IVA, even if completely locked.
I like your idea davey I think that is my job for the weekend.
Anyone know what size nuts i need?
At my SVA yesterday i was told that if a balance bar is fitted you must be able to test the range of motion and must be locked to the point that the
range of motion will not meet a fail condition.
I pinned through the yokes and was told it wouldnt do, after that it passed the brake test and nothing more was said about it.
However if it was i would of pointed out that it is now a fixed system with now range of adjustment.
Thanks guys that gives me a few more solutions. Talking about the need for adjustment i thought maybe as marc was trying to sell it to me that id be
using it quite regularly for track days which i plan to do a few a year but your saying its probaly not needed?
Cheers
Adam
My SVA tester laughed when he saw the dash adjuster (it wasnt fixed in the dash though just loose!) and said take it out when back for the retest - he
said that the nuts need to be roll pinned either side when in position! I bet that is a right arse to drill em at the test centre - who drilled theirs
at the test centre on here? and how hard was it?
[Edited on 12/3/09 by joemotion]
Where does it say this in Draft IVA
For IVA the locknuts must be fully welded to the bias bar so that future adjustment is 'impossible'.
I was talking to someone who went throught the IVA training and the impression he gave me was that the nut itself did not need to be welded but that any exposed thread outside of the nut had to be welded so no adjustment could be made
quote:
Originally posted by gdp66
Where does it say this in Draft IVA
For IVA the locknuts must be fully welded to the bias bar so that future adjustment is 'impossible'.
quote:
25. It must not be possible to manually adjust braking rates between axles see note 4 and 5
quote:
Note 4: Hydraulic valves that only operate automatically and react to vehicle loading or braking forces are permitted (Load Sensing and Gravity valves). Manually adjusted valves (other than to permit presetting the automatic function of a valve) are not permitted to be fitted even if they are rendered un-adjustable.
Note 5: Bias bars and other mechanical adjusting devices fitted to twin master cylinders must have no means of adjustment. However they will be deemed acceptable if the all nuts etc are fully welded to their relative threads and all the threads originally intended to provide adjustment are welded along their length i.e. permanently rendering them un-adjustable.