Recommendations For Best Mechanical Tach?

[bdon661]

In October, I'll be installing the freshly overhauled 165 Franklin in my airplane to replace the aging, but incredibly reliable 150 that's in it now. The redline RPM is different between the 150 & 165, so I now have a good excuse to replace my somewhat twerky tach and noisy tach cable. Does anyone have a mechanical tach they like?

And no, I'm not interested in the digital whiz bang stuff. I've seen the guts of my engine and have concluded that a 25 degree difference in CHT or a 3 bar width difference in peak EGT at exactly 3016' Pressure Altitude at ISA + 10.62 Kelvin is of no interest to me. I fly my airplane to get away from that OCD stuff.

 

[gjordan]

Just send yours out for an overhaul and they will remark it for the correct limits. I think new cables and housings are available. While the cable is off, pull the tack drive to make sure the gear isnt worn. Oops, it will be a fresh engine. I would check the tack drive gear anyway. _____Grant.