Gear ratios for launcher

[JamesCH95]

Originally Posted by swwrobotics

Has anyone found that magic gear ratio that works best for the launcher?

Our team tried doing a direct drive with the CIM motor but the ball did not go very far. I remember reading that a 2.7 to 1 gear ratio works best but I can't be sure. Any ideas?

Originally Posted by CalTran

We've been running 2 BaneBot 550s with 20:1's and they work beautifully. We may just be able to pull off our master strategy after all

The gear ratio depends heavily on the diameter of your end effector, assuming you're doing a roller/wheel shooter. Direct-driving with a CIM to a 1" roller is very different from an 8" wheel.

OP, care to provide any details? My team's experiments show that you should find the exit speed you need for your range, assume the ball will go 60%-70% of your theoretical tangential free speed, and gear accordingly.