"I need help here -- I am not using the mechanical tach drive.  I
 need to cap it off somehow.....  .. How did you do it?"

After rebuilding my engine and installing dual electronic ignition; the cap
was provided by my FBO that did the powerplant work.

Avian Aeronautics, "PWT" Bremerton, Washington.   tel 360-674-2244

Bob Smiley
N94RJ