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Date: Wed, 16 Feb 2011 14:55:52 -0500
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Subject: Re: [LML] Re: follow up on Legacy pitch trim speed
From: paul miller <paul@tbm700.com>
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I know why the potentiometer doesn't work and you probably have the same =
3-channel trim board that feeds the trim servos.  Once I get the correct =
wiring tested I'll give it to you to look at.

Paul
N357V

On 2011-02-16, at 9:17 AM, Ron Jones wrote:

> I had my panel wired at Lancair, too. I also have the adjustable pot =
for pitch trim. It does absolutely nothing. When I called Lancair to =
complain, they suggested it would make a difference under air loads. =
Really? How do I test that? The fact is that it just doesn't work. Never =
has. Is it wired incorrectly? Don't know.
>=20
> Still, the airplane is quite flyable as is. I, too, merely "bump" the =
trim switch when in cruise. It's darn sensitive, but you get used to it. =
At pattern speeds, it's not a problem.
>=20
> Could I get it switched off in a timely manner in the case of a =
runaway? Good question.
>=20
> Ron Jones
> www.legacy-innovations.com=20
> ron@legacy-innovations.com
>=20
> Sent from Ron's iPad . . .
>=20
> On Feb 16, 2011, at 4:53 AM, paul miller <paul@tbm700.com> wrote:
>=20
>> Determined a properly setup 12v trim will take about 30 seconds full =
up to full down in a Legacy. That sounds about right and Ed Martin's =
Legacy here is working the right way. Mine and others at 6 seconds means =
that you have about 3 seconds from level flight to full deflection in a =
runaway.  That's not enough to activate the safety cutout or manually =
find a disconnect.  On a night approach or close to the ground that just =
isn't going to be detectable before things go wrong.  So, I'm still =
looking for the right wiring, I had my panel wired by Lancair Avionics =
but the box that controls the trim has no label and the pot that is =
supposed to control speed only stops the pitch trim so it isn't working =
properly.  We'll get it right but 6 seconds isn't safe imo.
>>=20
>> Paul
>> Legacy 186
>> Spruce Creek
>> --
>> For archives and unsub =
http://mail.lancaironline.net:81/lists/lml/List.html
>=20
> --
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