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#31
10-28-2008, 02:18 PM
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Re: pic: Drivetrain Concept
Imagine a channel that was 3" tall, with a 1" wide flange on the top and bottom, again 1/8" thick and 36" long. If you started with a flat sheet of aluminum and bent it into the channel shape, it would have to start out being 5" x 36" in size, so it would be quite a bit heavier than just a flat side piece.
And if it were a rectangular tube, it would be even heavier. 
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