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Author: Subject: using 1mm box section
dt21jb

posted on 24/9/10 at 03:59 PM Reply With Quote
using 1mm box section

is 1mm to thin to build the haynes chassis

or should i stick to the 1.6mm

dan

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MakeEverything

posted on 24/9/10 at 04:09 PM Reply With Quote
1.6mm sounds verry thick. i think i used 1.2mm.





Kindest Regards,
Richard.

...You can make it foolProof, but youll never make it Idiot Proof!...

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AdamR

posted on 24/9/10 at 04:35 PM Reply With Quote
I can't comment on whether 1mm is too thin from a structural point of view (and I hope you do a detailed FEA analysis rather than taking anyone's word for it on here) - but certainly the usual 1.5/1.6mm is easier to weld effectively.
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l0rd

posted on 24/9/10 at 04:42 PM Reply With Quote
Depends on the usage.

1mm will be too thin i believe.

1.2mm would be ok for track use

1.5/6mm would be ok for road use.

If you haven't been around for long (neither have I) but i have seen a racing chassis of a westfield fail as it was used on the road and i believe the weight reduction was on the chassis tubes thickness.

I am sure, that someone else will come and correct me.

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Myke 2463

posted on 24/9/10 at 04:56 PM Reply With Quote
Chassis tube

16 swg was the std spec for both Haynes and Locost books.





Be Lucky Mike.

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Strontium Dog

posted on 24/9/10 at 05:03 PM Reply With Quote
SWG to mm

http://www.newcircuits.com/article.php?id=tut003

I'd stick to 16 swg for road use. 18 swg if used for a track car should be inspected regularly (very regularly if you like the curbs etc.) !

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t.j.

posted on 25/9/10 at 06:48 AM Reply With Quote
i'm using 2 mm but next time 1.6 mm

I'm sure if you're a great welder and can cut the parts perfect you could drop to 1.2 mm. But maybe some extra triangles needed.

But is it worth all the hassle?

Grtz





Please feel free to correct my bad English, i'm still learning. Your Dutch is awfull! :-)

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dt21jb

posted on 25/9/10 at 02:08 PM Reply With Quote
i'm planning to tig weld my chassis seen as i'm a fab/welder.

my boss who builds his own hot rods,currently i'm building his chassis a 33 roadster reckons 1.6 is better for it.

dan

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hughpinder

posted on 27/9/10 at 08:54 AM Reply With Quote
16g (1.5 or 1.6 mm) is standard, 18g for 'race' chassis (1.2mm), and as said this will have regular inspection. 1mm may well be strong enough in theory, but for a road car don't forget some corrosion allowance.

Regards
Hugh

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Liam

posted on 27/9/10 at 10:41 AM Reply With Quote
Most standard chassis, particularly in the engine bay, are far from perfect spaceframe designs and have lots of bending load on some tubes. I wouldn't go thinner than 16SWG unless the design was being improved in these areas.
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