ady8077
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| posted on 7/6/04 at 06:37 PM |
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Harness mounts
Hi all
The top harness mounts on my roll bar are M10 nuts welded to the cross brace, from what i've found searching this forum this will be an SVA fail
? 
If i get tubes welded through the roll bar do they have to be threaded or can i use long bolts and nylocks ?
Adrian
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wicket
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| posted on 7/6/04 at 10:26 PM |
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Not sure about the tubes welded through, but seat belt/harness fasteners are 7/16" UNF (just over 11mm diameter) grade 8.8 or better.
[Edited on 7/6/04 by wicket]
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ady8077
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| posted on 8/6/04 at 03:52 PM |
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Hi Wicket
Just tried a M10 bolt and it doesn't fit so maybe they are 7/16" UNF ?
Anyone no a supplier of such bolts in 8.8 ?
Thanks Adrian
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James
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| posted on 8/6/04 at 03:54 PM |
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Adrian,
I have a feeling your M10s will fail SVA anyway as they're too small. Need to be 7/16, 11mm or larger.
... IIRC! ...
James
[Edited on 8/6/04 by James]
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Mark Allanson
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| posted on 8/6/04 at 06:04 PM |
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The M10's will fail, it's a bit bizzare really - the human body would be sliced into 4 pieces by the harness before an 8.8 M10 would fail
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
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craig1410
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| posted on 8/6/04 at 10:35 PM |
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Hi,
I've just had some harness top mounts made up by a fellow Locostbuilder using 20mm outside diameter round bar drilled on a lathe and threaded.
He threaded them 7/16UNF for me which is certainly a more elegant solution than the nyloc method and will suit most harness kits. I did consider using
an M12 bolt and nyloc with an unthreaded tube but I must say I think I did the right thing. I got my mounts made 60mm long to give me about 5mm above
and below the rollbar to make welding easy. I'd recommend you get a 20mm holesaw and arbour from Screwfix to cut the holes in the rollbar for
the mounts
I agree that M10 will not be good enough for SVA even though as Mark says, it is more than strong enough!
Drop a U2U to "type907" (Paul) who I'm sure will be happy to make you up some mounts. I've dealt with him a couple of times
now and can recommend his work.
Cheers,
Craig.
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JoelP
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| posted on 9/6/04 at 07:33 AM |
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quote:
Originally posted by ady8077
Anyone no a supplier of such bolts in 8.8 ?
Thanks Adrian
try a google for local bolt suppliers, i did it and found a handy guy close to my home. or a kellysearch.
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craig1410
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| posted on 9/6/04 at 11:56 AM |
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You normally get bolts supplied with your harness kit but try Namrick if not. I think the web address is just www.namrick.co.uk
Cheers,
Craig.
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ady8077
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| posted on 9/6/04 at 04:03 PM |
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Hi
Harness's came without bolts, ordered some from www.namrick.co.uk
Thanks
Adrian
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Mark Allanson
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| posted on 9/6/04 at 05:50 PM |
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8.8 is only applicable to metric bolts, 3 raised notches show an UNF bolt has the right tensile strength
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
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Ben_Copeland
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| posted on 9/6/04 at 07:47 PM |
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My harnesses came with the bolts and mounting plates... but i did find some seat belt (from production car) bolts in a draw... same thread. Might be
worth a look, thousands in breakers 
Ben
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ady8077
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| posted on 9/6/04 at 08:08 PM |
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Hi Ben
I tried a bolt out of my works escort van, but it didn't fit
But i've ordered some now so should be ok
Anyone got any comments on the nuts welded to the roll bar ?
Adrian
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Ben_Copeland
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| posted on 9/6/04 at 08:11 PM |
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Think mine where out of my original Mk1 escort... cant think what else they would of come from....
Ben
Locost Map on Google Maps
Z20LET Astra Turbo, into a Haynes
Roadster
Enter Your Details Here
http://www.facebook.com/EquinoxProducts for all your bodywork needs!
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