Tralfaz
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| posted on 11/9/06 at 11:41 AM |
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Wishbone Tubing (Reassure me)
For a Sub 900lb(400kg) BEC...
All 4130 Chromoly
7/8" (22.2mm) diam. / .083 (2.1mm)wall For the Lowers
3/4" (19mm) diam. / .083 (2.1mm) wall for the uppers.
Sounds fine, no?
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JoelP
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| posted on 11/9/06 at 12:32 PM |
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fine if all is designed well. 
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caber
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| posted on 11/9/06 at 02:58 PM |
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Bottom one will bend anyway if you use book design!
Caber
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iank
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| posted on 11/9/06 at 03:18 PM |
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Are you experienced welding chromoly?
I presume you're planning to TIG or gas weld it...
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JB
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| posted on 11/9/06 at 03:45 PM |
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4130
Sizes look Ok, though I would be tempted with larger OD and thinner wall. Actual design is more important.
As has been said, welding and post welding heat treat (or stress relieve) is important.
John
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johnemms
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| posted on 11/9/06 at 04:43 PM |
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I saw some realy strong wishbones on here recently... however...
The damage to the chassis was significant when he curbed it..
maybe softer wishbones would have been cheaper to fix or replace than half the chassis.......
comment ?
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JoelP
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| posted on 11/9/06 at 05:01 PM |
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for my own one im making now, its going to be 7/8" 16g seamless all round. I would happily use 3/4" for the top ones.
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nitram38
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| posted on 11/9/06 at 05:24 PM |
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I used 25mm o/d with 3mm wall, but my front bones are about 18" long!!!!
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t.j.
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| posted on 11/9/06 at 06:51 PM |
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I'm using 25 mm wall 3 mm S235 (st37-2)
It will be prob. to strong but losing a wheel isn't most pleasant thing.
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NS Dev
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| posted on 12/9/06 at 09:18 AM |
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quote:
Originally posted by JoelP
for my own one im making now, its going to be 7/8" 16g seamless all round. I would happily use 3/4" for the top ones.
that sounds about right to me
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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