Steve Edwards wrote:

>   any thoughts on the UMA  asi? good, ??

Like anything, they make good ones and bad ones.  I don't know that they 
have a bad reputation, but they did make a run of bad ones about 10 years 
ago, which is when I bought mine.  I didn't discover that it was inaccurate 
by about 52% until my first flight, and that made it a pretty wild ride.  In 
retrospect, I should have checked it BEFORE the first flight, rather than 
afterwards.  Since the warranty was long expired, I simply had to buy 
another one.  I don't even remember what the new one is, but it may be an 
UMA also.  Whatever it is, it's very accurate at the high end, and off by at 
least 10 mph at the low end.  Details on how to check the calibration on an 
ASI are given at http://home.hiwaay.net/~langford/airspeed_calibration/ . 
Like most things, you get what you pay for...

Mark Langford, Huntsville, Alabama
see KR2S homebuilt airplane N56ML at http://home.hiwaay.net/~langford
email to N56ML "at" hiwaay.net


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