"randall g" wrote in message
...
I have been informed that my HSI is precessing fairly rapidly. I'll
check it out in the air soon (plane is in annual). It's a Century
NSD-360A non-slaved unit. A refurbished unit will cost about $2700. Does
anyone have any recommendations for a replacement? The Sandel SN3500
looks nice, but expensive. The airplane is a 1974 Cessna Cardinal RG.
I'm about to start IFR flight training so this is fairly important..



randall g =%^) PPASEL+Night 1974 Cardinal RG
http://www.telemark.net/randallg
Lots of aerial photographs of British Columbia at:
http://www.telemark.net/randallg/photos.htm
Vancouver's famous Kat Kam: http://www.katkam.ca


You could look for a used EHSI like Kings ED462. I have one available but it
is 24 volt, just pulled from a P-210. With the Signal Generator(SG465), rate
gyro(C14A), and control box(CP468), you would only be into it about 4.5
AMU's. That is probably half of a Sandel, and here is what the P210 pilot
said after his change to a Sandel:

The reason I purchased the Sandel is because the Knig EHSI just wasn't
compatible with the rest of the avionics package. I liked the EHSI so much
and the Sandel is close to it in terms of performance. I say close, but the
EHSI has more features and I like it better.

Installation probably cost about $1,000. My Sandel is the 3 1/2 inch unit.
They also have a 4 or 4 1/2" unit for $11,000. The 3 1/2 inch unit is fine
for me and I haven't had any problems using it.

You are correct that the components listed would provide a complete
installation.

The Sandel is far superior to the steam HSI. If overlays GPS, DME, ADF, VOR
1 and 2 on the HSI with a push button.

The EHIS goes several steps beyond and provides winds aloft direction and
speed and a few more incidentals.

If I could have kept the King EHSI with the new avionics, I would have. In
fact, I intended to, but it wasn't compatible with the other equipment that
I chose.


Al G