This comic was mainly inspired by my cat, tehillah. who seemed like he was always laying around. he passed away a little while ago.
BAD IDEA TO HIT MOTORS HARD!
The cat has great biological motors; they take a hit and remain operational. For our robots the stresses on motors must be considered for reliabe operation. An example can drive this point home. Thumper was a 1997 Robot Wars robot. Four 12V drive motors, yet powered with 24V yielded twice the speed and four times the power, enough to spin the tires! The spring assisted lift arm motors could flip one-hundred pound robots and the two side arm motors could return the robot to an upright position. Thump-er was tested and match ready, NOT! In the first contest match, Thumper wins by flipping the opponent, but the gears in the the lift arm stripped. Two motors replaced! In the second match, Thumper easily pins an opponent; but thirty seconds of full power pushing a pinned opponent, over-heated the motors; a cloud of smoke appeared. Referees separated the robots. (The drive motors still move, but with minimal power.) Thumper is now under powered. Thumper uses the self righting arm motors before loosing. Six more motors are replaced!
Tips: Design so that jarring and direct hits are not transfered to the motors. Over voltage to the motors can be a bad idea as stalled motors equate to failed motors. Bring many extra motors; they might be needed. (Battle proven designs are upgraded every year, until great!)