Mike Adams wrote:

: So, has anyone ever heard of this? is it indicative of a problem? It's a
: factory overhauled unit that I can pull out and take back to the shop if
: necessary, or I can learn to live with it if it's harmless.

I also have an RC Allen gyro horizon. It does not do this.

My old gyro horizon did this on spin-down, more and more as it wore out.
Eventually it did it all the time. It was an Edo-Aire. I believe it
is indicative of bad bearings in the gyro mechanism. Does the gyro make a lot
of noise as it spins down, or can you feel vibration with your fingers
on the front glass? My worn-out gyro did both of these in an increasing
amount each flight.

--
Aaron Coolidge (N9376J)