pic: Team 610 Off-Season Tank Drive Prototype

[Andy Y.]

Andy Y. here,
Designer/CADer of the tank drive

Thank you for your questions. It could help us later after we build it in troubleshooting problems. I see Jonathan Norris has already answered the questions above. I'll check for further questions if any of you have some.

Note: Special thanks to Jonathan Norris, Derek (our amazing lab technician), Mr. Morrison, and Mr. Grant for helping me with the tank drive design. Without them it would no doubt have been a half baked job.

Andy

[Madison]

I don't know if it's worth the hassle of dealing with ordering from the US, but onlinemetals.com has 3"x3"x.125" tube.

http://onlinemetals.com/merchant.cfm...owunits=inches

1/4" wall is an enormous weight penalty and very likely much too beefy for nearly anything you'll throw at it.

[Andy Y.]

Originally Posted by M. Krass

I don't know if it's worth the hassle of dealing with ordering from the US, but onlinemetals.com has 3"x3"x.125" tube.

http://onlinemetals.com/merchant.cfm...owunits=inches

1/4" wall is an enormous weight penalty and very likely much too beefy for nearly anything you'll throw at it.

Thank you for the site reference. We chose to use 1/4 in thick 3 in square for several reasons. Firstly, yes it is stronger. Secondly, we wanted the extra weight for our prototype since we won't have the weight of a robot on top of it. And finally, I forgot to add the wall thickness on my parts list XD so we got 1/4 instead.

Andy