Quote:
Originally Posted by R.C.
I'm not totally following. Just to clarify, your saying that 6061 1/2" hex would be more than fine in a drivetrain application such as a WCD (or other drivetrain using live axle)?
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We've used 1/2" 6061 axles in a drive before, however, they were supported by bearings on both sides, and we were running 6" wheels instead of 4" wheels. We didn't see it twist up at all. YMMV.
Of course, with the 7075 VP stuff so cheap, easy, machinable, and strong, I would never order 6061 hex for drive shafts. They almost never come with the right dimensional tolerance on the OD anyway, whereas the VP stuff is good to go out of the box. So really, why use 6061?
OP, if you're fine with wrecking some material, go for the Churro tube. Otherwise, buy the real stuff from Vex and profit. I've seen Churro tube twisted up ("into a twizzler shape") multiple times at regionals, and I wouldn't bet much on it holding up.