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#1
July 15th 04, 03:00 AM
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Analog tach replacement
I have suspected for a while that my old analog tach was lying to me. My
Archer's static RPM at take-off was measuring about 22k and the minimum spec was 2325, but the plane seemed to have good cruise speed. When I pointed an optical tach through the windshield I read a static RPM of 23.4K. At cruise, 25K on the analog tach translated to 25.8K on the digital tach. Any suggestions for a replacement digital instrument? It would be nice to drop it into the old tach's mounting and possibly get a few more functions from the same piece of real estate. -- Regards, Mike http://mywebpage.netscape.com/amountainaero/fspic1.html 
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