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Aluminium brackets for brake flexis
djaques - 11/4/11 at 12:35 PM

I'm confused... Are aluminium brackets for brake flexis an automatic IVA fail? Or does it just depend on the tester? Has anyone passed IVA with aluminium brackets to support the flexis?

Mr Whippy - 11/4/11 at 12:45 PM

why even go that route as they will just fatigue? Do the best you can with the brake system, there is no other as important

Bluemoon - 11/4/11 at 01:19 PM

quote:
Originally posted by Mr Whippy
why even go that route as they will just fatigue? Do the best you can with the brake system, there is no other as important


Have to agree, I do have some Ali brackets on mine (passed SVA) but it's probably not recommended... Also the front hoses are mounted on the ally bodywork.. Of course the IVA might be different and this arrangement might fail.

Cheers

Dan

[Edited on 11/4/11 by Bluemoon]

matt_gsxr - 11/4/11 at 01:58 PM

quote:
Originally posted by Mr Whippy
Do the best you can with the brake system, there is no other as important


what about the bolts that hold the wheels on, or the steering?

I do agree with the sentiment though

Miks15 - 11/4/11 at 02:06 PM

why are you not recomending ali brackets?

I have some ali angle rivetted to my chassis which the flexi and copper pipe meet to hold it firm. Is this not recomended then?

blakep82 - 11/4/11 at 02:18 PM

quote:
Originally posted by Miks15
why are you not recomending ali brackets?

I have some ali angle rivetted to my chassis which the flexi and copper pipe meet to hold it firm. Is this not recomended then?


ali is more likely to work harden and break than steel is. thats all. i don't think ali would fail IVA though.

Irony - 11/4/11 at 02:43 PM

I have a few Aluminium brackets on my car (not on the road yet) and the robustness of them does worry me slightly. One of the Ali brackets I have holds the Cooling fan on (several ali brackets in fact). While the Ali worries be slightly its got to be better than the 'cable ties' the fan supplier supplied me with.

Also my alternator is held on by a cast ally bracket as supplied by Rover. So that must be okay. Common sense needed

britishtrident - 11/4/11 at 02:45 PM

Aluminium alloy even if lightly loaded always have a finite fatigue life.

Steel as a general steel provided the load and amplitude of load reversals is kept within sensible limits can be regarded as having an infinite fatigue life.

Mr Whippy - 11/4/11 at 03:57 PM

quote:
Originally posted by matt_gsxr
quote:
Originally posted by Mr Whippy
Do the best you can with the brake system, there is no other as important


what about the bolts that hold the wheels on, or the steering?

I do agree with the sentiment though


hopefully if your wheels fell off or the steering broke you'd like to still be able to stop

a bracket for the brake pipe is going to be flexed every time you turn the steering wheel or go over a bump, just the worst thing you could have alluminium doing.

djaques - 11/4/11 at 07:53 PM

Thanks for your replies. I know from pictures on the site that lots of people have used aluminium for the flexi brackets. I understand the fatigue problems, and that steel is the way to go to be certain. I just wondered if anyone had failed the IVA because the tester had judged that aluminium brackets were not adequate.