Does whatever a colsonbot does
Can he spin? Can he win?
NO HE CAN'T!
He's a wheel!
Colsonbot is a 3lb weight class ("Beetleweight") combat robot that lives in an 8" caster wheel (hence the Colson name). It's a quick, maneuverable shell-spinner design with a brushless friction-drive system for the shell, that could be quite competitive if only it didn't live inside a wheel. Colsonbot is a pacifist, nonviolent combat robot. Perfect for FIRST Robotics.
Colsonbot was printed in ABS using a Dimension 1200ES, but has also been printed in PLA and Nylon. 100% fill, or sparse fill with many shells, should be used for strength. Most important areas for strength is the central tower that supports the 5/8" bolt.
Colsonbot uses the following parts:
- QTY 4: Fingertech Robotics Silver Spark 11:1
- QTY 4: McMaster-Carr P/N 9600K53 rubber grommets
- QTY 2: Vex Robotics 29 Motor Controller
- QTY 1: Hobbyking Zippy 1000mah 3S/25C LiPoly battery
- QTY 1 or 2: Hobbyking NTM PROPDRIVE 2830 motor
- QTY 1 or 2: Hobbyking TURNIGY PLUS 18A brushless motor controller
Use flathead #4 x 3/8" coarse-thread sheet metal screws, or Plastite/threadforming screws for plastic to assemble the covers.
To use a 8"x2" Colson Performa wheel as the spinning shell, it must be machined hollow using a lathe. A size PFR-2214 bearing, 5/8" bore, fits into the wheel center. The part "Spacer for PFR-2214 Bearing" is to space out the bearings axially (along the center shaft) only.
The center shaft is made using a 5/8"-18 hex-head bolt whose head is machined down to 1/8" thickness.
A full report of Colsonbot's build can be found here: http://www.etotheipiplusone.net/?p=3718