Jeff said, 

"Gyros are heavy and require a vacuum source with a lot of associated
heavy plumbing. Mike Stirewalt has his Dynon D2 for sale for a very
reasonable price." 

I did have it for sale . . . but within minutes of listing it on
Vansairforce I had two buyers.  I sold it to the one whose email came in
first.  

I can't recommend the Dynon D2, although it worked exceedingly well on
the recent ferry flight for which I bought it.  The attitude information
it displays is dependent upon receiving a GPS signal.  It has it's own
internal GPS and gyros it's true but for some inexplicable reason if it
loses a GPS signal - it happens - you lose your horizon.  

For a low-cost attitude instrument I highly recommend the TruTrak ADI. 
Used ones sometime show up on eBay in the $500-600 range.  They used to
make the 3 1/8" ADI which is the one I have in the KR.  Currently their
ADI that looks like mine is a 2+ inch instrument, which is fine.  I just
prefer the larger one.  They do make a couple newer instruments which do
the same thing as their ADI but look a little different.  The name Gemini
comes to mind, but check out their website.  These instruments by
TruTrak, the ADI, Gemini and I think a couple others they make are
self-contained attitude instruments.  They do connect to a GPS puck but
that is strictly for ground track (heading) information. 

The D2 is very smooth and usable.  I liked it.  However, just imagine
being totally dependent on it when in IFR conditions - cloud or on a very
dark night without any outside reference.  I don't like the idea at all
of its dependency upon a GPS signal.  

Thanks Jeff.

Mike
KSEE

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