flak monkey
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| posted on 10/6/06 at 05:55 AM |
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Yep, but i converted them to Kg for the purposes of this. By all means carry out the calcs for yourself. It doesnt matter anyway, just multiply
thenumbers by 9.81 if you want them in N...
People identify more easily with N than Kg, well most probably do anyway, hence i just converted the loads, sorry if this upsets the
engineer/physicist in you 
Sera
http://www.motosera.com
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gjs
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| posted on 10/6/06 at 05:12 PM |
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How thin could you go on tubing if you use 4130 cr-mo,for chassis.I not not locost but it would be pretty light
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violentblue
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| posted on 11/6/06 at 03:53 PM |
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so a chassis built from 35mm 16ga steel tube would be plenty strong and stiff enough for street/limited track use?
I've been thinking 25mm may work but looks a little small (I ususally way overbuild things)
so what is the final results of all the debate between everyone with more education than me?
which size and thickness of tube is the best balance of safety and weight.
[Edited on 11/6/06 by violentblue]
a few pics of my other projects
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crbrlfrost
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| posted on 12/6/06 at 02:27 AM |
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In terms of strength, you may be able to get away with slightly thinner 4130, but then you have to start looking at the lengths of the spans and oil
canning (flexing and collapsing of the wall). On the other hand, the modulus of 4130 is really no better than mild steel, so your stiffness (what we
all basically strive for) will go to pot. Actually, with the exception of extreme loads, I don't understand peoples fixation on 4130 as a
chassis material. There's the welding issues, the heat treating issues, the cost, etc, with no appreciable increase in stiffness. For a rollbar
and its mounting yes, but thats because by themselves they can be heat treated post weld. Oh well, perhaps I'm wrong, and I'm rambling.
Cheers!
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Avoneer
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| posted on 12/6/06 at 06:30 AM |
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25mm x 16G.
That's what 99.9% of us use without any problems.
Why over-complicate things and pay more?
Pat...
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However a large number of electrons were terribly inconvenienced.
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