iiyama
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| posted on 9/2/07 at 07:50 PM |
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HI Spec Brakes
Anyone got Hi Spec Ultra lites fitted on to Sierra uprights?
If so are they threaded? Or is it a nut and bolt job? Pretty sure they are M10 clearance, well the Sierra part is anyway! If they are threaded, any
idea of the pitch?
Same info needed for the handbrake calipers as well.
Ta!
If its broke, fix it. If it aint broke, take it apart and find out how it works!
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PAUL FISHER
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| posted on 9/2/07 at 10:29 PM |
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I had ultra light fours,radial mounts on my last Indy,with light weight 280mm discs,the calipers came with all the nuts bolts and brackets to fit to
the sierra uprights.Also just fitted the sierra lug mount handbrake calipers on my new build,again they came with nuts and bolts etc to fit,if I
recall thay are 10mm about 60mm long,but just check when you order them that they are supplying all hardware to
fit..jpg)
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iiyama
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| posted on 10/2/07 at 11:42 AM |
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As far as Im aware, I having lug mounts onto the existing mountings. These are on a fabricated upright, not the standard Sierra jobbies.
Reason for asking is that Im using Ti bolts on stressed areas! I know, I need certifying!
If its broke, fix it. If it aint broke, take it apart and find out how it works!
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Coose
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| posted on 10/2/07 at 01:30 PM |
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Careful - HiSpec are good quality but I know a fair few people who have had customer service and/or delivery issues...
Hopefully they have sorted any problems at their end, but I thought that it's worth letting you know....
Spin 'er off Well...
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procomp
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| posted on 10/2/07 at 03:16 PM |
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Hi right here is a question that i could not get a difinitive answer on.
The handbrake mechanisim is supposed to work completly independent of the hydrualic system and as a seperate means of securing the veichcle other than
the hydrualic system for mot purposes.
However on these hispec units the hand brake cable is worked to operate the hydrualic part of the caliper.
Having had various discusions with people i have not had a difinitive answer other than one place may fail them on an mot but an other wont . ?
cheers matt
Ps there pr and customer relations is just as bad as ever.
[Edited on 10/2/07 by procomp]
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PAUL FISHER
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| posted on 10/2/07 at 04:12 PM |
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Yes Matt, I too have heard of a instance of someone having a problem at SVA,as you say the handbrake works by hydraulics,I have also heard that hi
spec has had to submit drawings of the caliper to the DPT for assessment,a bit late in the day for that if this is correct,you would have thought this
would have been done while it was being developed,As for customer service I can only go on personal experience,I purchased a brake kit off them in
2004,and the customer service, waiting time,being sent the incorrect items,the all round service was very poor,but I ordered the rear brake kit off
them back end of 2006,and had no problems at all,quick delivery,and everything spot on,Chris mason also had good service from them at the same time,so
we may have been lucky,but it appears they are getting better.
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ChrisGamlin
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| posted on 10/2/07 at 05:48 PM |
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This WSCC thread would seem to confirm that nothing has changed 
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iiyama
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| posted on 25/2/07 at 10:37 AM |
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OK, got the brakes. Been a fairly painless excercise too! 
Anyway to correct some posts on here, true to form I had a little look inside the rear caliper.
I can confirm that the handbrake does NOT work hydraulically, the handbrake arm moves a cam that operates the piston.
So there really shouldnt be any SVA issues at all.
Ian
If its broke, fix it. If it aint broke, take it apart and find out how it works!
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Stu16v
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| posted on 25/2/07 at 09:57 PM |
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quote:
Originally posted by iiyama
Anyway to correct some posts on here, true to form I had a little look inside the rear caliper.
I can confirm that the handbrake does NOT work hydraulically, the handbrake arm moves a cam that operates the piston.
So there really shouldnt be any SVA issues at all.
Ian
And the piston on the opposite side?
Dont just build it.....make it!
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iiyama
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| posted on 25/2/07 at 10:06 PM |
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quote:
Originally posted by Stu16v
quote:
Originally posted by iiyama
Anyway to correct some posts on here, true to form I had a little look inside the rear caliper.
I can confirm that the handbrake does NOT work hydraulically, the handbrake arm moves a cam that operates the piston.
So there really shouldnt be any SVA issues at all.
Ian
And the piston on the opposite side?
Good point! Have to say Im not sure. There isnt any mechanical linkage to that piston for sure, but the arm thats connected to the handbrake cable
definatly operates the piston adjacent to it mechanically.
If its broke, fix it. If it aint broke, take it apart and find out how it works!
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procomp
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| posted on 26/2/07 at 08:52 AM |
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Hi if they dont opperate hydrualicly.
Then the person who was representing them at the autosport show the previous year was not doing them any favours by saying that that the cable
operated a shut of valve on the input and opperated the internal section of hydrualics.
Which is what others have been told also hence them having to submitt drawings for the product to the DPT. Verry confusing unless they have now done
some which dont opperate the hydrualics.
cheers matt
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ChrisGamlin
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| posted on 26/2/07 at 10:02 PM |
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The Wilwood rear calipers with integrated handbrake are very simple and very obviously mechanically operated, not sure how well they work as a
handbrake though. Anyone got any experience?
[Edited on 26/2/07 by ChrisGamlin]
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