scutter
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 posted on 11/5/06 at 06:41 AM |
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Rollcage tubing
As above, Whats the best type and size of tubing for my rollcage as i'm replacing the 50mm*5.5mm tubing that i'm using at the moment. (
it's a wee bit heavy)
I won't be using the car for competition but some saftey at tackdays would be nice
ATB Dan.
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big_wasa
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| posted on 11/5/06 at 07:11 AM |
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5.5mm 
3mm cds should be plenty
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iank
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| posted on 11/5/06 at 07:20 AM |
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50mm x 2.5 should be fine (don't have MSA spec to hand) CDS obviously.
T45 is stronger, so can be made thinner and therefore lighter, but there have been comments on here that it's not as good in a multiple roll.
(search should find it). It's also expensive.
Would have thought 5.5mm would make you more likely to roll  
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procomp
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| posted on 11/5/06 at 07:54 AM |
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HI most people use 1 1/2" - 38mm by 2.6mm cds . if you are going to do some track days you might as well incorporate rear stays aswell in your
desighn. Whilst you are at it make shure you make the cage 50mm above your head as per blue book whith a helmet on as you may just get the bug for a
bit of sprinting or simmalar . Plus if you ever decide to sell the car it wont hurt to have a cage on to the blue book spec.
cheers matt
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MikeR
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| posted on 11/5/06 at 10:01 AM |
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Mines going to be 38mm ish by 3mm - cause thats whats available.
the extra half mill doesn't concern me as i'm looking at it being stronger therefore better!
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Fred W B
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| posted on 11/5/06 at 11:12 AM |
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Comparing 50x5.5 to 38x2.6, I recon the saving will be approx 4.2 kg per metre of tube.
Cheers
Fred W B
[Edited on 11/5/06 by Fred W B]
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silex
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| posted on 11/5/06 at 11:42 AM |
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3.765Kg/m weight saving
Murphy's 2 laws
1. If it can go wrong it will
2. In case of emergency - refer to rule 1.
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NS Dev
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| posted on 12/5/06 at 09:19 AM |
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quote:
Originally posted by MikeR
Mines going to be 38mm ish by 3mm - cause thats whats available.
the extra half mill doesn't concern me as i'm looking at it being stronger therefore better!
Not if you're using the tube I have mike! It's 1 3/4 x 1/8
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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wildchild
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| posted on 12/5/06 at 10:24 AM |
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quote:
Originally posted by procomp
Whilst you are at it make shure you make the cage 50mm above your head as per blue book whith a helmet on as you may just get the bug for a bit of
sprinting or simmalar . Plus if you ever decide to sell the car it wont hurt to have a cage on to the blue book spec.
cheers matt
so long as the person you sell it too isn't any taller than you!
mine will have quite a tall cage, what with me being about 6'4"
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NS Dev
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| posted on 12/5/06 at 10:41 AM |
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Incidentally, just so you know, RACMSA non homologated manufacturer spec tube minimums are:
38 x 2.5mm or 45 x 2.5mm or 50 x 2mm
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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