Of the shelf? Not really. You can come close but it still needs a fairly decent amount of precision metalwork.

Places like technobots and beltingonline will be able to modify pulley bores to whatever size for you if you are in need, this does ramp up the cost. HTD3 is a good size to use if you're going the timing belt route. I now prefer O ring style belting.

You should not be really direct driving off of stock motors at this class.

the numbers on a brushless motor generally denote physical size, a 2826 outrunner is 28mm in diameter by 26mm long. Power wise anywhere from 200w to 500w I feel is okay at this size.

Kv is how fast the motor will spin per volt, so a 1000kv motor on 12v will spin 12,000 RPM.

Controllers I found the turnigy plush range to be fairly decent with the right programing.


Case study time.





Here you can see a very simple pulley setup. It is set screwed onto the output shaft of a brushless motor. Dual belts are fancy but may not be necessary for your design. The bearings are in the bulkheads and the robot runs a live shaft.

The other way I've done things is using a dead shaft (12mm) and putting the bearings inside the pulleys which bolt to the weapon disc. This I feel is the better way of doing things.





The pulley is built around the can of the motor instead of on the shaft because I didn't need that much reduction and it saves a lot of space.

Any more specific questions I'm happy to answer.