Finally getting around to this, no gears per say, it uses threadrod, and dowel rod/ O rings to grip, plus a pressure wheel to push the thread rod down on the O-rings... Not as bad as gears at all, very simple, and you have more control over the lever throw.
Should have it running in a month.
Based on a Corsair throttle, has Throttle, Mixture, and Prop pitch... Cant wait to try it out!! Next Ill put in mag switches...