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| View Poll Results: What do you use for chassis material? | |||
| wood |
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11 | 5.07% |
| steel angle |
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8 | 3.69% |
| aluminum angle |
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36 | 16.59% |
| steel tubing (round or rectangular) |
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2 | 0.92% |
| aluminum tubing (round or rectangular) |
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58 | 26.73% |
| Bosch extrusion or similar (aluminum or steel) |
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89 | 41.01% |
| Other |
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13 | 5.99% |
| Voters: 217. You may not vote on this poll | |||
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#17
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Quote:
To keep with the thread: In the past two years we're always using 80/20, 1010 (1" x 1")... and here's why: The moment of inertia of 80/20 1010, which is 1" x 1", is .04413 in^4 The moment of interia of 1" x 1" x 1/8 thick box is 0.0570 in^4 The weight of 80/20 1010 is 0.495 lbs / ft The weight of 1" x 1" x 1/8 aluminum box is 0.511 lbs / ft So.. for those of you trying to save weight, look again! Check it out at: http://www.8020.net/pdf/Fractional/0...%20(31-62).pdf Obviously though, it's more expensive than box aluminum. We were purchasing it at around $2.50 a foot. Box aluminum is about $1.50 a foot off of www.onlinemetals.com People tend to make assumptions... crunch some numbers and you'll be surprised what you find! In addition, the ability to actually CHANGE your frame around makes 80-20 great stuff. You can buy a 100 pack of t-nuts for $.08 each and go to town. Where 80-20 makes all their money is on those brackets and corner squares at $18 each. We make our own and come out just fine. Matt Last edited by Matt Adams : 05-12-2003 at 13:01. |
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