[Joe Johnson]

Originally Posted by MysterE

Hey all -

We need some help. We recently had to replace the Ball Shifters on our competition robot with some single speed dual cims due to the fact that we couldn't get the shifters to work. I'm hoping that you might be able to help us get them working.

When we run them, we are getting a loud clicking sound and a lot of stuttering in the bot - especially when we try to turn. The same issue doesn't exist with the single speed. We initially thought it was the scrubbing due to the fact that we only had four wheels, but we no longer do.

I know this isn't a lot of description, but I'm not sure what other info to provide. If anyone could help walk me through this I'd be appreciative.

Best -
Daniel

Need more data:

• Number of motors on each side.
• Total Ratio from motor to wheels (3 numbers, 2 with the shifter set up, 1 with the single speed set up)
• Size of the wheels
• Also, what type of wheels are we taking about (let me guess 8" Pneumatic Tires from AndyMark).
• Can you tell us about the pneumatic system you are using to power the shifting actuators? Are you sure it is working right? Is there another air actuator that you have that is working properly?

Dr. Joe J.