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#1
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Re: pic: 3 Hour Chassis + 2 Hours
You could consider a 1x1 bar of 80/20 insead of what you have for the cross pieces. The ends can be tapped for a 1/4 20 bolt and you can just bolt it to the outer plate. This also leaves you a lot of flexibilty on the inside as far as mounting other components.
I think it would work nicely in a prototype like this. My team actually used a very similar frame to this this year, aluminum side plates, cross beams extending to the outer plate, toughbox transmission etc...Anyway the 80/20 worked nicely for us on the cross braces. |
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#2
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Re: pic: 3 Hour Chassis + 2 Hours
Quote:
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#3
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Re: pic: 3 Hour Chassis + 2 Hours
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80/20 is unneccessary if your team CADs well, because you can plan all of your cuts ahead of time. 80/20 can be nice if your team likes to make it up as you go and constantly be taking off and adding parts. (not that you can't do it with other materials, just 80/20 makes it easy). I would still recommend it for a prototype though. |
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#4
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Re: pic: 3 Hour Chassis + 2 Hours
Not really, 80/20 weighs almost exactly the same as 1/8" wall 1" square tubing.
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#5
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Re: pic: 3 Hour Chassis + 2 Hours
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For the hollow tube in general, you're right. But for the specific hollow tube called for, 80/20 will be heavier. Comment on the cross-braces: I'm not quite sure I'd trust a 1/16" wall for that application in that pattern. Change the pattern, and you'll probably be fine--but run the analysis just to make sure. |
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#6
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Re: pic: 3 Hour Chassis + 2 Hours
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(These numbers are what SolidWorks is telling me). You can pocket 1x1 tubing, but you can't pocket 80/20 so that could be included in the weight tradeoff. Last edited by sgreco : 11-05-2010 at 19:46. |
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#7
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Re: pic: 3 Hour Chassis + 2 Hours
i would recommend the use of C channel instead of square pipe, it can be just as strong if oriented correctly, and it is lighter as well as easier to attached.
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