single pilot ifr trip tonight

Newps wrote in message news:govqb.129678$Fm2.107682@attbi_s04...
Dan Truesdell wrote:
the few short
forays into the clouds lead me to investigate an electric AI. Although
we were only in the bumpy stuff for a few minutes at a time,

Now that the FAA has finally relented and allowed you to throw away your
turn coordinator and get a second AI I went and talked to my local
avionics shop about the RC Allen electric AI that I see advertised for
about $1800. They said don't bother as 90% of them come back because
they are so horribly built. They told me to get the reliability of a
vacuum AI it's gonna take about $4000.

Why are the electric AI's so poor? I hear this frequently on the
newsgroup.

OTOH, one rarely hears about people complaining of TCs.

Is it the extra dimension of rotation that causes the problem? Or is
just RC Allen's design/mfg?

-Nathan