14-19-3 tachometer cruise rpm

bbarrett

bbarrett

New member
Hi all -

The tach in my 14-19-3 has reached the point of overhaul / replacement. It's clearly not original (the fact that it says Cessna on the front is a good hint). I'm considering replacing rather than overhauling, because there's just something that bugs me about having other aircraft manufacturers' logos on the instruments. So on to the question... The current tach's average cruise RPM for the recording part is 2300 RPM and what little I've found online seems to suggest that the original tach would have been set with an average cruise RPM of 2300 RPM. Does anyone happen to know whether or not it was actually 2300 RPM?

Thanks,

Brian
 
on my -3 with original tach, when I run 2300 the clock on the tach matches real time.. I guess that's a good as proof as any.
If you end up having yours overhauled, the shop can rescreen the face so the Cessna logo goes away :)
 
I know it is not cheap, but I replaced my tach with a Horizon electronic tach after my tach drive gear sheared. Was cheaper than pulling the accessory case at the time, since I wasn't an A&P then. I had already made sure there was no metal left in the engine.
I LOVE that instrument. I can lean more precisely with it, as it acts faster than my egt (fixed pitch prop), and I can diagnose some engine problems with it.
Alan Harstine installed an Electronics International electric tach in his Cruisair, and EI added it to their AML, so it is a simple STC to do.
LL
 
Larry, Thanks for the suggestion. I had been looking at both the Horizon and EI tachs, as tach cables and I have a hate-hate relationship (boats, cars, airplanes, doesn't matter, they fail on me at the worst times). After a lot of discussion with my IA and a bunch of guys on the field, I'm likely going to up the cost even more and do an EDM-900. I've been looking to add a proper engine monitor and fuel flow for some time and due to the way people over the years have chopped up the panel, I'm really space limited. Since there's not a single engine gauge in the plane not in desperate need of overhaul, the cost differential isn't quite as bad as it might first appear and I'll have freed up huge chunks of space. I think I'm glad that the IA is happy to supervise my labor on this install...
 
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