pic: 3lb combat robot



i couldn’t wait for FIRST to release the game challenge so i combat robot to keep me busy…

frame is waterjet’ed 1/16" ti and 5/8" uhmw, weapon is hardened 1/4" thick 6" dia 4130 blade with a custom hubmotor. the drivetrain is 1000rpm ebay motors with tinyESC’s and it runs off a 3s 1000mah lipo.

Please, tell me about this hubmotor. It looks very unique and has the potential to save a lot of weight and space.

i’m bad at explaining things so read this instructable about hubmotors http://www.instructables.com/id/Make-Your-Own-Miniature-Electric-Hub-Motor/#intro

i actually did not make the hubmotor, i bought it from the guy who wrote the instructable on it. i really don’t have the patience to wind motors…

Very cool, thanks. It seems like a simple concept. I even got to know an LRK winding pretty well when rewinding an ebay motor for a 150g about 6 years go. If it runs astray, gobrushless.com has lots of supplies to make your own (or repair).

i was going to make the hubmotor myself but it was cheaper and easier for me to buy it from him when he was clearing out old projects.

is the blade purchased from here? http://www.etotheipiplusone.net/

yes it was