rebelflier
Member
Friday I was returning from my first flight to the Rocky Mountains to my home north of Houston. It was a 5 hour flight, and as I was coming around Fort Worth, I noticed the Tach was reading near red line. Not sure what was going on, I reduced power and it came down. After I figured it was a faulty reading from the tach, I continued home. By the time I decended to land, the Tach was reading 3400 RPM's. It is an old school, mechanical tach with 257 hrs. on it, made by Jet Electronics and Technology, Inc. Thinking that the little coiled tension spring had come loose I took it apart and everything is intact, nothing broken or loose. I put a small drive cable in it, and drove it with my CNC lathe at 1250 RPMs which should read 2500 on tach. It indicated a perfect 2500 RPMs. Now I'm not sure the problem is the Tach. Anyone ever seen this before? Don't see how the tach cable could turn faster if broken or something.
RV-6
O320 E2C
Fixed pitch prop.
RV-6
O320 E2C
Fixed pitch prop.