Mechanical Regulator Movement?

[aepstein]

Can we rig a mechanical motor to the 60psi Regulator in order to turn it during the game? We'd like to control the pressure going to the piston based on how hard a kick we need and want to do this with a motor connected to a simple turning mechanism to adjust the regulator.

Is this legal per the rules, or would this be a modification to a pneumatic system that would be disallowed.

Thanks for your insight.

_Alan