Question on VEX motor speed

If I use a 600 RPM motor and then change the speed of the motor through code to 200 RPM does it really start behaving like a 200 RPM motor with the same torque as the 200 RPM motor or am I better off using a 200 RPM motor if I want the same torque as the 200 RPM motor?

Although 600 RPM motor running at 200 RPM has more torque than running at 600 RPM, I think 200 RPM motors running at 200 RPM still has more torque.

Also, why?

Torque depends alot more on the internal gearing of the motor (i.e. max rpm) than how fast it is spun. While a 600rpm motor running at 200rpm has more torque than a 600rpm motor running at full speed, you’re much better off just using a 200rpm motor at max speed if your goal is to have more torque.

2 Likes

I’m just curious, but how much more torque is running a 600 rpm motor at 200 rpm than running it at full speed?

stall torque for a motor with blue cartridge is around 0.35Nm, you will not get more than that. The torque the motor provides will depend on the load, a high load will require more torque from the motor, it doesn’t really matter if you ask it to run at 600 or 200 rpm, although it’s more likely to achieve 200.

3 Likes

Thanks for the information - very helpful - I will use a 200 rpm cartridge instead of changing the speed of the 600 rpm through code