X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 1 [X] Return-Path: Sender: To: lml Date: Sun, 11 Feb 2007 10:27:38 -0500 Message-ID: X-Original-Return-Path: Received: from imo-d21.mx.aol.com ([205.188.144.207] verified) by logan.com (CommuniGate Pro SMTP 5.1.6) with ESMTP id 1830242 for lml@lancaironline.net; Sun, 11 Feb 2007 10:07:02 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.188.144.207; envelope-from=Sky2high@aol.com Received: from Sky2high@aol.com by imo-d21.mx.aol.com (mail_out_v38_r7.6.) id q.c4b.e4e6c59 (58435) for ; Sun, 11 Feb 2007 10:06:08 -0500 (EST) From: Sky2high@aol.com X-Original-Message-ID: X-Original-Date: Sun, 11 Feb 2007 10:06:08 EST Subject: Re: [LML] Re: Flap actuator issues X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1171206368" X-Mailer: 9.0 Security Edition for Windows sub 5358 X-Spam-Flag: NO -------------------------------1171206368 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 2/11/2007 8:58:02 A.M. Central Standard Time, marv@lancaironline.net writes: [Jim, it sounds like your flap actuator motor is coasting past the retract limit, allowing the operating rod to jam up in the housing . The circuitry that powers the flaps should include a method of shorting the motor leads together when the power to the actuator is removed. While the motor is spinning down unpowered it is acting as a generator and shorting its leads together places a huge load on it thereby acting as an electrical 'brake'. I thought that the wiring instructions in the build manual included that feature... I know it does on the flap motor for the LNC2. Of course, the problem could be purely mechanical, although this is the first thing I'd be looking at to get to the root of the problem. Just a thought. ] Jim, Marv, That is the first thing I thought of too. Perhaps the relays providing the "short" should be examined for burnt contacts or other problems - if the wiring is correct. Scott Krueger AKA Grayhawk Lancair N92EX IO320 SB 89/96 Aurora, IL (KARR) A man has got to know his limitations. -------------------------------1171206368 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
In a message dated 2/11/2007 8:58:02 A.M. Central Standard Time,=20 marv@lancaironline.net writes:
<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>[Jim, it=20 sounds like your flap actuator motor is coasting past the retract
limi= t,=20 allowing the operating rod to jam up in the housing .  The circuitry=20
that powers the flaps should include a method of shorting the motor le= ads=20
together when the power to the actuator is removed.  While the mo= tor=20 is
spinning down unpowered it is acting as a generator and shorting it= s=20 leads
together places a huge load on it thereby acting as an electrica= l=20 'brake'.  I
thought that the wiring instructions in the build man= ual=20 included that
feature... I know it does on the flap motor for the=20 LNC2.  Of course, the
problem could be purely mechanical, althoug= h=20 this is the first thing I'd be
looking at to get to the root of the=20 problem.  Just a thought.   <Marv>  =20 ]
Jim, Marv,
 
That is the first thing I thought of too.  Perhaps the relays=20 providing the "short" should be examined for burnt contacts or other problem= s -=20 if the wiring is correct.
 
Scott Krueger=20 AKA Grayhawk
Lancair N92EX IO320 SB 89/96
Aurora, IL (KARR)

A m= an=20 has got to know his limitations.
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