My servos keep burning up because they dont have holding brakes but the rack and pinion system here:
and here:
makes me think it may be easier than I thought.
Can you recommend a modification to a rack and pinion system that would replace a worm drive as a high speed linear actuator with strong holding brakes?
The obvious first thought is to simply double the thrust and holding power with two pinion servos operated from a Y splitter with the rack running through both of them to double the power and increase the resistance.
The second is to have two independently signaled servos, the braking one a modified continuous rotation servo designed to rotate the rack in the direction opposite to the weight force while the controlling servo simply tries to hold still, now with decreased stress.
The third would be to create a disc brake with a rubber claw or similar with a second servo. It would brake with a spring and unclamp when powered maybe (so a switched off robot wont move). What do you think? What are your ideas for a servo holding brake?