Jesus-Ninja
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| posted on 14/10/08 at 11:43 AM |
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Harness Bars
On my S14's roll cage, the harnesses attached at the rear to a bar. Rather than the harness looping through the buckle which then clipped
through an eye bolted into the frame, the harness simply went round the bar. This strikes me as a better solution than than using a buckle that clips
to an eye. The "route" of the webbing is the same (it goes round the bar instead of the buckle and doubles back through another buckle),
but it goes round a large radius, so loading is better. The buckle and eye are removed, so less points for failure, and the harness bar is not drilled
and welded to take the eye, so is potentially stronger.
Is it acceptable for SVA though? I had an interesting "discussion" with an MOT man convincing him that direct attachment to the cage was
preferable.
The only consideration I can think of is that using the harness bar in this way, the webbing can slide laterally along the bar, where as with a buckle
and eye, the webbing cannot move in such a way.
Any thoughts?
Suspension geometry tool here >>> http://www.locostbuilders.co.uk/viewthread.php?tid=81376
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lsdweb
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| posted on 14/10/08 at 11:53 AM |
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Jesus-Ninja
I had the exact same arrangement on my Fury when it went for SVA a few years ago. The tester (and the guy 'examining' him) debated the
legality of this for over an hour! In the end they 'let it go' as if it was an inferior way of mounting the harnesses. Jobsworth!
It may be worth speaking to the SVA centre beforehand?
Wyn
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jimgiblett
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| posted on 14/10/08 at 11:53 AM |
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Thats how my seatbelts are fitted to a lot of Fisher Furys.
Mine go over the bar and bolt to the chassis in the boot.
No probs for either at SVA but they do like to see the thread go all the way through the roll bar to show that it is substantial..
- Jim
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adithorp
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| posted on 14/10/08 at 11:59 AM |
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I'd say not good for SVA. Reason being that its not an excepted method in the manual and it depends upon the buckle being correctly fitted. They
could argue that its possible for it to undo.
adrian
"A witty saying proves nothing" Voltaire
http://jpsc.org.uk/forum/
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maartenromijn
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| posted on 14/10/08 at 12:03 PM |
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Because of the bar being thick (say at least 1,5" the sewings will be loaded in a different direction. I would check this with the harness
manufacturer.
BLOG: http://thunderroad-super7.blogspot.com/
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Hammerhead
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| posted on 14/10/08 at 12:14 PM |
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my lotus elise is like this just looped around the horizontal bar. I want the same on my indy, so i hope it passes.
Steve.
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lsdweb
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| posted on 14/10/08 at 03:12 PM |
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It's the same way that the same belts are fitted in most touring cars, world rally cars etc...................
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omega 24 v6
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| posted on 14/10/08 at 04:18 PM |
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It does however allow for side ways movement in an impact. IMHO that makes it a no go for sva
If it looks wrong it probably is wrong.
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Liam
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| posted on 14/10/08 at 04:50 PM |
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If your seat has harness slots this should stop sideways movement. I want to do mine this way too as it's a far, far better engineering
solution to mounting them the usual kit car way. Hence why most professional competiotion vehicles have them mounted like this.
Liam
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Jesus-Ninja
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 posted on 14/10/08 at 09:37 PM |
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Thanks all! Well, sounds like it's another one of those "play it by the book to pass the test, and then do the "right" thing
after" 
Suspension geometry tool here >>> http://www.locostbuilders.co.uk/viewthread.php?tid=81376
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