Yesterday, my tachometer went berserk in flight. First the engine hour register stopped counting, and then the hand started swiping back and forth like a lady's hand fan.except in an irregular manner.
OK. When I turn the prop, the cable turns, so I think the cable is OK. Anybody know any way to test the instrument, now that I have it out, to be sure that is the part that is busted? The tach has been unused for about 2 years while the plane (and I) were recovering our health. Is it likely to have merely dried up? Dave Winters
