Mark G
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| posted on 15/1/09 at 08:16 PM |
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Fitting seats. SVA rules?
Hey all,
I started to fit my seats the other day and hit a problem, My seat rails aren't long enough for both bolt holes to go through the straps on the
chassis. Does it matter if the front set go through the chassis strap and the rear set of bolts go through the ally floor? I don't know if the
SVA states that they must be fitted to the chassis or not.
If I fit them to the ally floor then I'll add an extra couple of rivits for the floor to the chassis strap for a bit more strength.
Your ideas please...
I've added a pic below to make things a little clearer.
The red is obviously the chassis strap, Blue dots would be the bolts and the green dots are rivets.
Thanks all
Mark.
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Stuart_B
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| posted on 15/1/09 at 08:19 PM |
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hi mark, i think if you put spreader plates under the floor underneather the alu floor, it will spread the weight. i think i have read some where on
here saying about that.
can someone else confime that?
stuart
black mk indy, 1.6pinto on cbr600 bike carb's.
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Mark G
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| posted on 15/1/09 at 08:23 PM |
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Thanks, Any ideas on the size and thickness the plates need to be?
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speedyxjs
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| posted on 15/1/09 at 08:24 PM |
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If the seat id mounted to the floor in any way, it make the floor a structural part of the chassis and the floor will need to me welded on?
ETA my spelling is bad tonight 
[Edited on 15-1-09 by speedyxjs]
How long can i resist the temptation to drop a V8 in?
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Johneturbo
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| posted on 15/1/09 at 08:25 PM |
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Mine were bolted to the ally floor as there isn't anything else to bolt them too in the mnr
big penny washers both sides, they were fine @ sva.
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repper
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| posted on 15/1/09 at 08:26 PM |
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ive made a square section out off 1"by 5mm thick plate welded it up good and strong so it bolted to the strong section off the car then bolted
the seat sliders to that
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adithorp
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| posted on 15/1/09 at 08:28 PM |
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Manual says spreader plates are required where the seats are bolted to none metalic part of the structure. So no, you don't need to be bolted to
the chassis for sva if your floor is ally'.
I'd use spreader plates though and rivet the floor to the cross strap anyway.
adrian
"A witty saying proves nothing" Voltaire
http://jpsc.org.uk/forum/
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iank
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| posted on 15/1/09 at 09:27 PM |
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quote:
Originally posted by adithorp
Manual says spreader plates are required where the seats are bolted to none metalic part of the structure. So no, you don't need to be bolted to
the chassis for sva if your floor is ally'.
I'd use spreader plates though and rivet the floor to the cross strap anyway.
adrian
There is guidance on spreader plates in Annex 1 on the seatbelt and anchorage section.
100x100mmx4mm spreaders go under floor for rear mounts, on top of floor for front mounts.
Though to be honest this seems to be aimed at seats that have integral belts than a car with harnesses (which put very little loading on the seat
mounts in a crash.
--
Never argue with an idiot. They drag you down to their level, then beat you with experience.
Anonymous
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RK
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| posted on 15/1/09 at 10:25 PM |
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excellent question, even for us because if it's good enough for your SVA or soon, IVA, then it's good enough for our provincial
testers.
I used a long flat piece of steel under the floor and put the bolts through the both of them. I will assume that will be OK too.
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Triton
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| posted on 18/1/09 at 07:01 PM |
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I would say add straps to chassis rather than rely on just huge washers on an ali floor...quite a few sold and fitted and been through SVA even rear
end shunts and no damage to oocupants or seats...pays to make the seats the way I do it seems...
My Daughter has taken over production of the damn fine Triton race seats and her contact email is emmatrs@live.co.uk.
www.tritonraceseats.com
www.hairyhedgehog.com
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