oadamo
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| posted on 6/9/07 at 10:48 AM |
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rad for sva
hi iam making a chassis out of folded sheet but what rad on the sheet would i need to pass the sva. on the bender i have at work its a very tight
bend. because where your sitting in the car the sheet folds up and over where your sitting to make the side frame like a double skin.
adam
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James
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| posted on 6/9/07 at 12:44 PM |
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quote:
Originally posted by oadamo
hi iam making a chassis out of folded sheet
adam
Christ! 
Really? Why?
After the problems Robin Hood have encountered/caused I'd steer well clear myself!
Maybe I'm just unimaginative! 
cheers,
James
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"The fight is won or lost far away from witnesses, behind the lines, in the gym and out there on the road, long before I dance under those lights."
- Muhammad Ali
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iank
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| posted on 6/9/07 at 01:53 PM |
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Depends what it's a sheet of 
I believe the rad you need is 2.5mm, but check the SVA manual to be sure.
--
Never argue with an idiot. They drag you down to their level, then beat you with experience.
Anonymous
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oadamo
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| posted on 6/9/07 at 02:23 PM |
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quote:
Originally posted by James
quote:
Originally posted by oadamo
hi iam making a chassis out of folded sheet
adam
Christ!
Really? Why?
After the problems Robin Hood have encountered/caused I'd steer well clear myself!
Maybe I'm just unimaginative!
cheers,
James
its the only way i can get the look iam after why what problems did Robin Hood encounter when trying this.
adam
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iank
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| posted on 6/9/07 at 02:33 PM |
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The problem is when using aluminium sheet as a monocoque. You need to really understand what you're doing to get good strength and avoid (as
far as possible) work hardening.
The racing cars that use that kind of construction tend to get rebuilt every season or two, which isn't practical for a roadcar.
If using stainless steel (as quantum do) there are fewer problems with longevity, but they get heavy.
--
Never argue with an idiot. They drag you down to their level, then beat you with experience.
Anonymous
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designer
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| posted on 6/9/07 at 04:12 PM |
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Congratulations to you for being different.
Good luck with the sheet construction.
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Blakey_boy
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| posted on 6/9/07 at 09:10 PM |
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Minumum Radius is 2.5mm on protruding and open elements that have a curved edge to them
I believe that is stated in the SVA book.
If I am wrong I am sorry
Gene Hunt:- If anything happens to that car, I'm coming round your house and stomping on your toys, Understand?
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James
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| posted on 7/9/07 at 12:14 AM |
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Agree with Designer on well done for being different!
One Robin Hood builder couldn't get his car through SVA. The examiner said it wasn't inherently strong enough. I can't remember the
exact details.
It led to a huge (and as yet unresolved AFAIK) issue for all the Lightweight builders.
Cheers,
James
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"The fight is won or lost far away from witnesses, behind the lines, in the gym and out there on the road, long before I dance under those lights."
- Muhammad Ali
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Mark Allanson
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| posted on 8/9/07 at 07:39 AM |
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I seem to remember that the seat belt mounts were the issue, the chassis is mainly made from 16g(?) ally and although fairly strong overall, it had no
single strong node points to attach the the belt mounts.
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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