Quote:
Originally Posted by ksafin
Hi all.
I heard, on, I believe, multiple occasions that having motors attached directly to wheels is bad for the motors.
Could anyone tell me why?
IE if I had a CIM motor with a belt pulley on its shaft and had that connected to a pulley on one of my wheels, why would this be bad?
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You're describing 2 different scenarios between your first 2 statements.
Attaching a wheel directly to a motor could be bad but really it depends on your application. For example a CIM direct driven ball launcher with a KOP wheel is ok.
A CIM direct driving a 6 inch wheel to propel a 100 lb robot is bad.
This is because of the load on the motor in the second case is large. The motor must draw a large amount of current to move your robot. Likely it would be too much and your motor will either trip the breaker or burn out.
It's okay in the first example because the load, of the wheel and ball is low and only briefly high when shooting.