Ben Smith wrote:
: Hello -

: This weekend, I noticed that our DG is starting to fail.. The indicated
: heading sways off after making a couple 90 degree turns.. Vacuum source
: seems to be OK, as the AI is still working good, and the vacuum gauge reads
: normal. So I'm pretty sure this is isolated to the DG.

: It has the original DG. (Airitalia, I believe). The local shop quoted low
: 700's for a brand new Sigmatek. (No autopilot, flags, or lighting). That
: does not include labor.. I think the price is right - but is the brand OK?

When my AI died last summer, I had both the AI and DG overhauled
by Kelly Instruments in Kansas. They did a top-notch job, with new
bearings, painted face, calibration... both are now rock solid. Cost
something like $300 each.

From what I've heard (both directly from Kelley and indirectly
from newsgroups, etc) is that the RC-Allen gyros are a bit more
troublesome from a failure-rate perspective. I was even thinking that the
older stuff is probably built better than the newer stuff... thus the
decision to overhaul the old one.

Make *sure* when you do this that you put in a new filter, and
probably new vac hoses... no sense in cheaping out on $30 when you're
replacing a gyro for $300-$700.

FWIW
-Cory


--
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* The prime directive of Linux: *
* - learn what you don't know, *
* - teach what you do. *
* (Just my 20 USm$) *
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