On 24 Dec 2003 17:37:10 -0800, (Doug)
wrote:

My RC Allen AI did that when it was new also. It has lasted another
1000 hours! I called the guy who supplied it, he said go ahead and use
it till warranty expiration is near, then if it still does it, send it
back. It has stopped doing this. It also, very occasionally did
another weird thing. It would erect upsidedown! Then spend about a 45
minutes gradually righting itself. This is no BS, really did that,
three times at least. If it had been an IFR trip, I couldn't have
taken off. As it was, I just flew and watched in amusement. Gyros are
weird sometimes.


Mine doesn't spin, but will sometimes wobble for a minute or two if
the plane is really cold inside. I need to put a heater under the
panel to go with the tanis on the engine.

Roger Halstead (K8RI & ARRL life member)
(N833R, S# CD-2 Worlds oldest Debonair?)
www.rogerhalstead.com

Mike Adams wrote in message news:stkGb.37748$m83.27355@fed1read01...
Here's a weird one I'd never heard of before but maybe one of you guys can
explain. I installed a new attitude indicator last week and went out for a
test flight yesterday. It's just a plain vanilla R C Allen vacuum AI. Well,
it worked great on the flight - erected quickly, and nice and stable in
flight. But then when I shut down, and the gyro was spinning down, the
horizon started spinning, fairly rapidly - maybe one revolution per second.
Then of course it eventually stopped as the gyro spun down.

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.

Thanks, and happy holidays all,

Mike