Sender: <marv@lancaironline.net>
To: lml@lancaironline.net
Date: Sat, 05 Jul 2008 18:19:22 -0400
Message-ID: <redirect-3013028@logan.com>
From: "Paul Bricker" <pbricker@att.net>
References: <list-3012492@logan.com>
Subject: RE: [LML] Re: Runaway trim
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In-Reply-To: <list-3012492@logan.com>

I used the Relay Deck from Infinity Aerospace and have had no problems to
date.

Paul Bricker
N63PB

-----Original Message-----
From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of John
Schroeder
Sent: Saturday, July 05, 2008 5:05 AM
To: lml@lancaironline.net
Subject: [LML] Re: Runaway trim

Jeff -

I have had a pitch trim relay go bad. The symptoms: intermittent operation
to trim nose down and no problem trimming nose up. It didn't take much to
have to hold a lot of forward stick to control it. Fortunately, it started
working again after a few minutes ( about the time I was ready to head for
the nearest airport.).It happened a couple of times on the trip to TX for
Lancair fly-in in October last. Tim said that the Ray Allen relays for the
coolie hat trim setup are notoriously bad and that he carried a spare with a
connector on the end for quick change-out. We changed to the Mod 2 model
(different form/dimensions) and it has worked well ever since. We never did
get an uncontrolled input of pitch trim.

My data point.

John Schroeder
LNCE 205 hours


On Wed, 02 Jul 2008 23:05:21 -0400, <vtailjeff@aol.com> wrote:

> With all this discussion about trim, I thought I would add my 2 cents. A
IVP can be difficult to fly with inoperative pitch?trim-- too much stick
force required. Having said that, in over 1200 hours of flying more than one
IVP aircraft, I have never had a trim runaway. I also have never heard of
one of these servos running away. If anyone has seen a RAC servo "runaway",
speak up now. The more likely scenario is a trim servo that will not work at
all. Unless someone can confirm a runwaway servo I think this discussion is
much ado about nuthin'.
>
> Regards,
>
> Jeff Edwards


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