matto_89
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| posted on 21/12/11 at 03:33 PM |
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Seats and seatbelts
Hi all, got a question regarding making my seats IVA legal.
These are the seats:
http://www.flickr.com/photos/72553267@N07/6549236033/in/photostream
Unfortunately they won't pass IVA - they do have headrests, but the headrests are not 700m above the reference point. I originally planned to
raise the headrests up by extending and then sleeving the vertical bits. The headrests would no longer be adjustable, that that wouldn't matter
for the purposes of IVA. However, if I did so the gap between the bottom of the headrest and the top of the seat would be more than 50mm, so I'd
fail on that instead. Its also quite tricky because I don't want any of my fiddling around with the headrests to mean that the route of the
harnesses changes, because I think that would result in a fail too.
What I'm now planning on doing is this:
http://www.flickr.com/photos/72553267@N07/6549242405/in/photostream
I basically want to make a new headrest (as I've done out of ally and padding). The foam that I've wedged on the top of the seat will be
the same as the new headrest - all ally box with foam (eventually covered with more thin foam and vinyl). The harness will then pass between the gap
as shown. The heights of everything will pass - the headrests will be over 700m above the reference point, the gap between the top of the seat and the
headrest will be less than 50mm, and the harnesses will be mounted at shoulder level and their path won't be altered by any of the seat or
headrest.
The whole thing will look much tidier and won't have any nasty edges or anything like that, but I just didn't want to go any further
before getting some second opinions. I feel like I am overcomplicating what should be relatively simple.
On paper, it seems that this should pass. I can't see why it won't be within the letters of the law, though i readily concede that it
doesn't really fit with the principles of it! Anyone with experience of doing something similar? As you can probably tell, I don't really
want to go out and buy another set of seats! All help much appreciated.
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blakep82
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| posted on 21/12/11 at 03:46 PM |
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if you can weld (i assume you can as the first photo looks like you've yet to weld the lower belt mount tube in?) then why not weld a small
vertical tube in between the lower and upper tube, then a head rest type thing can be fixed to that?
i forget where i saw something like it... think it was a racing car either on here or in the 2nd ron champion book...
why would you fail on the gap between the head rest and seat being more than 50mm? i don't remember seeing that in the manual? though it has
changed a bit since i last read through it all... should really catch up on the changes i guess
[Edited on 21/12/11 by blakep82]
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IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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RK
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| posted on 21/12/11 at 11:23 PM |
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bolt something to the roll bar like the racers do.
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matto_89
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| posted on 22/12/11 at 12:21 AM |
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quote:
Originally posted by RK
bolt something to the roll bar like the racers do.
As far as I'm aware (and please correct me if I'm wrong), I can't bolt head restraints to the roll bar - they have to be integral to
the seat. This was one of the reasons for buying seats a while back.
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