Rookie Team 3729's minibot

[boomergeek]

Originally Posted by joeweber

We tried direct driving off the motor a 3/16 shaft with sergical tubing over it and it smoked the motor. I would like to see a close up.

How much did your smoking robot weigh? In our attempts, direct drive would not bugle our 4.25 lb minibot. With a 2.25 lb minibot, direct drive works amazingly well.

The other parameter is the right amount of normal force on the pole- for a 2 lb robot, you want about 4 lbs of normal force to hold the surgical tubing of the wheels to the pole. Too much and the motors are loaded down by friction.
Vamfun did nice simulations...
http://www.chiefdelphi.com/forums/sh...6&postcount=16