The mechanical variometers would probably not be rugged enough to deal with the continuos vibration from the engine and the electronic ones are not cheap. The least expensive unit that I know of is the Ball vario which is
about twice as expensive as the common vsi. Sailplanes need the quick response and sensitivity that is really not needed in an airplane. In a sailplane the vario is about 100' to 150' behind the aircraft. An airplane does not have much use for that kind of sensitivity but does need more averaging than a sailplane so that the turbulence is factored out on an approach. There may also be a problem with the FAA. The vertical speed indicator is not a required instrument in the Coupe so you don't have to have it. I don't think there is a TSO for the variometers so there may be a paperwork problem installing one into an airplane as with adding any non tso'd piece ao equipment. Bob Condon __________________________________________________________________________ ______ To unsubscribe from this list please send mailto:[EMAIL PROTECTED] _____________________________________________________________ Want to find the best email lists? Check out the Topica 20! http://www.topica.com/topica20
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