Hello all, I'm new to Mooney Space but I've learned a ton here - thank you for all the great info! I'm the builder/owner of a Long Ez and I recently bought a '66 M20C. I wanted a better solution for the Yoke mounted PTT switch. I don't like the velcro strap variation we've all seen and my airplane still has the vacuum PC system so replacing the PC disconnect valve wasn't an option. I had a spare yoke / control wheel and I 3D scanned it, then modeled a switch mount around the top of the yoke. The mount is an interference fit and snaps onto the yoke. Below are pictures of the installation, I'll share more once its installed in the airplane.
Its meant to work with 6mm momentary switches available from various sources, but I used these ones here: https://www.mcmaster.com/catalog/131/1104/7400K111
The files could be modified for any switch or expanded if additional switches are needed.
Attached is an STL file. - Disclaimer: check with applicable regs and your A&P before using. I recommend using a plastic that isn’t biodegradable.
PTT-Yoke-66M20C.stl