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Date: Sat, 15 Jan 2011 10:10:32 -0500
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From: paul miller <paul@tbm700.com>
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Subject: elevator trim speed (TruTrak)
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On my Legacy I have the 2004 Trutrak autotrim system with a DFC250 28v =
and all works well.  The trim speed is very fast such that a bump of the =
switch sets up a big pitch change.  I measure the full up to full down =
travel time which is adjustable on the module from 5-8 seconds =
only--very fast.  My certified aircraft run 30-40 seconds.  I wrote =
Trutrak and they said the unit has to come back because it says 24v but =
may be wired for only 12v.   I measured the voltage to the unit and it =
is fed 28v.  If you have one and have similar trim speeds you might want =
to think about a fix because there is nothing in the wiring diagrams =
that would suggest an error in installation.  The diagram inputs show =
12-24v to the unit.  I'd be interested in travel times for other Legacy =
trims for comparison.

Paul
L2K-186 =20=