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Old May 21st, 2008, 05:22 PM   #15
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Join Date: 12-29-05
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I'll probably have a lot of people go against what I say, but I would honestly check into 3/4" pipe which is approximately 1 1/8" O.D. (you can find a chart online, pipe diameters are never exactly what they say they are, inside or out). It will be thicker, cheaper. The downside is that it has a welded seam unlike round tubing and is not rated as structural but rather as a pressure vessel. Although square tubing will also have a weld seam, and some round does unless it is labeled D.O.M. (Drawn Over Mandrel). For a roll cage, no way. For a go-kart on the cheap, I'd say why not. You may find it's a little heavier than what you need but if the extra weight is not an issue I really don't think you'd have problems building a go-kart with it.
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