X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 02 Sep 2008 23:05:24 -0400 Message-ID: X-Original-Return-Path: Received: from smtp-ext-05.mx.pitdc1.expedient.net ([206.210.69.145] verified) by logan.com (CommuniGate Pro SMTP 5.2.6) with ESMTPS id 3103286 for lml@lancaironline.net; Mon, 01 Sep 2008 09:59:36 -0400 Received-SPF: none receiver=logan.com; client-ip=206.210.69.145; envelope-from=rpastusek@htii.com Received: from dlhtpax009 (c-98-218-217-188.hsd1.va.comcast.net [98.218.217.188]) by smtp-ext-05.mx.pitdc1.expedient.net (Postfix) with ESMTPSA id 6B449E45B9 for ; Mon, 1 Sep 2008 09:59:00 -0400 (EDT) Reply-To: From: "Robert Pastusek" X-Original-To: "'Lancair Mailing List'" References: In-Reply-To: Subject: RE: [LML] LancairIVP Aileron Setup. X-Original-Date: Mon, 1 Sep 2008 09:58:58 -0400 Organization: Holmes-Tucker International, Inc. X-Original-Message-ID: <001901c90c3a$e2a83240$a7f896c0$@com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001A_01C90C19.5B9B2620" X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: AckLYAQUCaB4a4qORb+9J8N6Ly9zxwA2RJ2w Content-Language: en-us This is a multipart message in MIME format. ------=_NextPart_000_001A_01C90C19.5B9B2620 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Richard, I'll try an answer to your questions. First, the ailerons do not move an equal amount up and down from the neutral position. The linkage is designed to permit this differential deflection. To achieve the required deflections (both up and down) on my ailerons, I set the neutral position slightly up (I think you used the term reflexed). This resulted in rather stiff ailerons, especially at higher speeds, so I lowered the neutral position very slightly. This resulted in a one-degree less than specified max deflection in both directions, but seemed to decrease the force required to deflect the stick in roll while in flight. Maintaining this neutral aileron position and concurrently restoring the specified range of movement would require significant modification of the aileron counterweights, so I have elected not to do this, and to live with the small deflection deficiency. I do not recommend you follow my path. Altering flight controls in any way is a serious/major modification to the airplane, and should be done only with expert advice. Take the time to do this part by the book! Be creative in the interior design, etc. I'd be happy to mail you copies of the appropriate aileron set up and adjustment instructions from the construction manual if you don't have these. Hard to follow the instructions if you don't know what they are. Just let me know. Bob From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Richard T. Schaefer Sent: Sunday, August 31, 2008 7:52 AM To: lml@lancaironline.net Subject: [LML] LancairIVP Aileron Setup. Curious how folks have setup their ailerons. Are they neutral with stick neutral ? Or do you reflex up a little ? Looks like travel is limited by aileron stops inside with a stick motion of +/- 25 deg of travel. How much aileron travel does this typically correspond to ? Looks like the aileron travel is symmetrical up/down. Why do they call for +20 / -14 deg clearance on the ailerons when mass balancing ? r.t.s. ------=_NextPart_000_001A_01C90C19.5B9B2620 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Richard,

I’ll try an answer to your = questions.

First, the ailerons do not move an equal amount up and = down from the neutral position. The linkage is designed to permit this = differential deflection. To achieve the required deflections (both up and down) on my ailerons, I set the neutral position slightly up (I think you used the = term reflexed). This resulted in rather stiff ailerons, especially at higher = speeds, so I lowered the neutral position very slightly. This resulted in a = one-degree less than specified max deflection in both directions, but seemed to = decrease the force required to deflect the stick in roll while in flight. = Maintaining this neutral aileron position and concurrently restoring the specified = range of movement would require significant modification of the aileron = counterweights, so I have elected not to do this, and to live with the small deflection deficiency.

I do not recommend you follow my path. Altering flight = controls in any way is a serious/major modification to the airplane, and should = be done only with expert advice. Take the time to do this part by the book! Be = creative in the interior design, etc… I’d be happy to mail you copies = of the appropriate aileron set up and adjustment instructions from the = construction manual if you don’t have these. Hard to follow the instructions if = you don’t know what they are… Just let me = know.

Bob

From:= Lancair = Mailing List [mailto:lml@lancaironline.net] On Behalf Of Richard T. = Schaefer
Sent: Sunday, August 31, 2008 7:52 AM
To: lml@lancaironline.net
Subject: [LML] LancairIVP Aileron Setup.

Curious how folks have setup their ailerons.

Are they neutral with stick neutral ? Or do you reflex up a little = ?

Looks like travel is limited by aileron stops inside with a stick motion of = +/- 25 deg of travel.

How much aileron travel does this typically correspond to = ?

Looks like the aileron travel is symmetrical up/down.

Why do they call for +20 / -14 deg clearance on the ailerons when mass = balancing ?

r.t.s.

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