Markymark
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| posted on 20/7/14 at 07:05 AM |
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Mounting Brake Unions
Hi All
This is a question that's bugging me at the moment.
I want to secure my 3 and 4 way unions to the chassis by way of a rivnut, but I'm sure I read in one of the kit car magazines (typically an
article I can't find!) of someone failing IVA because of this. I can't think why this would be a problem, but better to be safe than
sorry.
So anybody been through IVA like this, or did you secure them another way?
All answers greatly received
Mark
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Dave Bailey
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| posted on 20/7/14 at 07:54 AM |
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I did not drill right through the tube so in effect did as you have said....
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rusty nuts
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| posted on 20/7/14 at 08:12 AM |
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In an ideal world the chassis builder would attach brackets for attaching tee pieces
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CosKev3
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| posted on 20/7/14 at 08:21 AM |
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I'm sure someone on here said it failed because the union was insecure, ie either the bolt was not tight enough or the riv nut was loose in
chassis, it didn't fail just because of using a riv nut.
if your worried weld a bolt onto chassis, then you can use a nylock nut on that 
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loggyboy
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| posted on 20/7/14 at 12:20 PM |
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Ive used a rivnut, and plan to add coloured torque seal paint as a means of a visual queue to them being and remain ing secure. Should keep iva man
happy.
http://www.loggyboy.com/images/Raw/Brakelines/FrontBrakeLines1.jpg
[Edited on 20-7-14 by loggyboy]
Mistral Motorsport
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Smoking Frog
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| posted on 20/7/14 at 01:21 PM |
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I also read this somewhere (most likely on here) and the tester advised drilling all the way through the tube. I welded some tabs on mine to bolt to.
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Smoking Frog
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| posted on 20/7/14 at 03:27 PM |
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This thread mentions it. It also says they were "wobbly".
http://www.locostbuilders.co.uk/viewthread.php?tid=130451
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Markymark
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 posted on 26/7/14 at 11:02 AM |
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Thanks for all the replies, as all ways lots of useful information
Saw on the other thread, someone suggested riv studs. This sounds like a good option, nylock nut on top for Mr IVA and as long as its tight, no
worries
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The Black Flash
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| posted on 26/7/14 at 09:59 PM |
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I passed with a rivnut, it has locktight on it and doesn't move at all.
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SteveWallace
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| posted on 27/7/14 at 06:21 PM |
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My IVA tester said that they wanted to be reassured that the bolt would not work loose. In the end, I drilled mine all of the way through and used
bolts and nylocks, but I guess that rivnuts with thread lock would also suffice (include a photo of a bottle of thread lock next to one of the fixings
as evidence). If thread lock is good enough for the brakes themselves then it should be good enough for the lines.
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