twinturbo
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| posted on 8/9/04 at 01:46 PM |
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Square tubed Wishbones.
Any reason not to make wichbones from square tube?
I read a previous thread that sugested tehre is no real structural advantage of RHS, so is it purely for asthetic apeal?
Ta
TT
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ned
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| posted on 8/9/04 at 01:53 PM |
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aesthetical as far as I know, round and oval is far sexier for the world to see..
Ned.
beware, I've got yellow skin
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twinturbo
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| posted on 8/9/04 at 02:23 PM |
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Cheers...
TT
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Hugh Paterson
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| posted on 8/9/04 at 04:31 PM |
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tubes
Oiii what wrong with aero and a Tig gun.
Shug.
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JoelP
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| posted on 8/9/04 at 05:53 PM |
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im not sure if square tube passes the SVA radius test. anyone know for sure? it would be a ball ache to have to pad the bones too.
Beware! Bourettes is binfectious.
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erwe
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| posted on 8/9/04 at 07:30 PM |
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wishbone tube
round is stronger and lighter then square.
I used Real oval tube, hard to find but you can't get it stronger and nicer to look at...
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stephen_gusterson
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| posted on 8/9/04 at 08:42 PM |
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I think i am the only one on here that has used square tube for wishbones.
it was summat like 3mm walled, 25mm section.
In my case they will be fully covered by bodywork. So radius isnt an issue......
atb
steve
[Edited on 8/9/04 by stephen_gusterson]
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JoelP
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| posted on 8/9/04 at 08:49 PM |
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quote:
Originally posted by stephen_gusterson
I think i am the only one on here that has used square tube for wishbones.
it was summat like 3mm walled, 25mm section.
wrong! and i think i've got the biggest balls too, cos i drove it on 19mm 16gauge square bones. Either that or they are so well designed that
they are ok with that tube (unlikely!)
Beware! Bourettes is binfectious.
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Mix
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| posted on 9/9/04 at 06:56 AM |
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The more I consider the options the more tempted I am to opt for square rear bones for the following reasons:
Ease of construction.
No strength penalty, (I think that was affirmed in an earlier thread).
Out of sight so cosmetics and radii are not an issue.
Mick
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Rob Lane
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| posted on 9/9/04 at 07:56 AM |
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Should really be made of seamless tube.
The wishbones take a lot of stress.
Sq tube is not seamless, although probably stronger in 25mm sq than 19mm round.
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stephen_gusterson
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| posted on 9/9/04 at 08:56 AM |
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Ken Walton, of TOL used to race for many years. He told me once that Nascars use square section in their wishbones.
If my 3mm walled ones bend, something is seriously wrong with my suspension geometry!
I think (from little experience, admittedly) that you would be ok with smaller section on the top bones, but the load bearing lowers would be
horrendously weak in small section. See that thread a while ago about bending wishbones.
My rear trailing arms are made from 50mm box, 3mm thick. All fronts are approx inch section, 1/8th thick. (Imerial cos its something I had in my
garage from a while back!)
atb
steve
quote:
Originally posted by JoelP
quote:
Originally posted by stephen_gusterson
I think i am the only one on here that has used square tube for wishbones.
it was summat like 3mm walled, 25mm section.
wrong! and i think i've got the biggest balls too, cos i drove it on 19mm 16gauge square bones. Either that or they are so well designed that
they are ok with that tube (unlikely!)
[Edited on 9/9/04 by stephen_gusterson]
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MikeRJ
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| posted on 9/9/04 at 12:09 PM |
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quote:
Originally posted by stephen_gusterson
My rear trailing arms are made from 50mm box, 3mm thick.
50mm  Is your rear axle design simmilar to a locost with four trailing arms? Those arms take only compressive/tensile forces rather than bending
so a 50mm section seems like massive overkill...
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stephen_gusterson
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| posted on 9/9/04 at 12:15 PM |
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totally totally different
think mini
atb
steve
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MikeRJ
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| posted on 9/9/04 at 06:20 PM |
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quote:
Originally posted by stephen_gusterson
totally totally different
think mini
atb
steve
Ahhh. Interesting choice, have you made them semi-trailing a la Sierra/BMW etc?
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JoelP
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| posted on 9/9/04 at 09:57 PM |
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i might point out that i am not implying that i think 19mm 16g is suitable for wishbones, merely that it has survived 40 miles an hour and cornering.
so i suspect that 2mm inch square or round is adequate.
Beware! Bourettes is binfectious.
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chrisf
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| posted on 10/9/04 at 12:59 PM |
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I used 1" 16 ga square tube for my upper rear wishbones. I figured that nobody would see them, so aesthetics would not matter. I am also of the
understanding that square tube is actually stronger in bending than round.
All my lower wishbones are made of 1" 16ga seemless. You are right that the square is much easier to work with.
--Chris
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