X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sun, 27 Jul 2008 07:56:51 -0400 Message-ID: X-Original-Return-Path: Received: from imo-d06.mx.aol.com ([205.188.157.38] verified) by logan.com (CommuniGate Pro SMTP 5.2.5) with ESMTP id 3043162 for lml@lancaironline.net; Sat, 26 Jul 2008 10:12:41 -0400 Received: from Sky2high@aol.com by imo-d06.mx.aol.com (mail_out_v38_r9.4.) id q.cfb.3a68d045 (14467) for ; Sat, 26 Jul 2008 10:12:31 -0400 (EDT) From: Sky2high@aol.com X-Original-Message-ID: X-Original-Date: Sat, 26 Jul 2008 10:12:31 EDT Subject: Re: [LML] Gap Seals X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1217081551" X-Mailer: Unknown sub 34 X-Spam-Flag:NO -------------------------------1217081551 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Bill, I did not actually measure aileron forces before and after, but I can say that I did not feel any significant difference. The purpose of my application of gap seals was to reduce drag in cruise - turns didn't count because there aren't that many in a long cross country race. The seals I use are made from curved mylar strips with leading edge glue and special thin tape over that. They were designed for 100 mph gliders and I have some angst when traveling over 200 Kts (225 in a descent). Loss of one control surface seal might result in uneven forces. I do not recommend this type of seal on faster airplanes. However, the drag reduction benefits on my airplane make the concept of gap seals useful. Were I building today, I would construct internal seals. Finally, the forces required for significantly deflecting the ailerons on a 320/360 to achieve a fast roll rate appear high and quite out of proportion to those light forces used for deflecting the elevator (lack of control harmony). Those aileron forces increase with speed but gently rolling into a standard rate turn does not seem to require that much effort and the AP has no problem with its 1/2 standard rate turns. Of course, the only time I use standard rate turns are at low speeds. Then again, everything changes in a 60 degree banked turn as there is no effort required to retain the bank but heavy handed back pressure is needed to retain the altitude (depending on whether it is to the left or right). Grayhawk PS 12 years of flying this powered lawn dart and she still puts a smile on my face each time we go up, flit hither and yon and later come back down to Mother Earth. How sweet it is. In a message dated 7/26/2008 7:30:28 A.M. Central Daylight Time, billhogarty@hughes.net writes: For Greyhawk: Although my ailerons move freely on the ground, the in-flight force required in my 4P is greater than I would hope for. I was considering gap seals as a possible remedy. Since I understand that you have installed gap seals on your machine, could we have your before and after experience with respect to aileron force and/or any other secrets you might like to share. BTW, does any other L-IV have this problem? Thanks, Bill Hogarty -- For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.html **************Get fantasy football with free live scoring. Sign up for FanHouse Fantasy Football today. (http://www.fanhouse.com/fantasyaffair?ncid=aolspr00050000000020) -------------------------------1217081551 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
Bill,
 
I did not actually measure aileron forces before and after, but I=20= can=20 say that I did not feel any significant difference.  The purpose of my=20 application of gap seals was to reduce drag in cruise - turns didn= 't=20 count because there aren't that many in a long cross country race.  &nb= sp;=20
 
The seals I use are made from curved mylar strips with leading edg= e=20 glue and special thin tape over that.  They were designed for 100 mph=20 gliders and I have some angst when traveling over 200 Kts (225 in a=20 descent).  Loss of one control surface seal might result in uneven=20 forces.  I do not recommend this type of seal on faster=20 airplanes. 
 
However, the drag reduction benefits on my airplane make the concept of= gap=20 seals useful.  Were I building today, I would construct internal seals.= =20
 
Finally, the forces required for significantly deflecting the ailerons=20= on a=20 320/360 to achieve a fast roll rate appear high and quite out of=20 proportion to those light forces used for deflecting the elevator=20 (lack of control harmony).  Those aileron forces increase with spe= ed=20 but gently rolling into a standard rate turn does not seem to require that m= uch=20 effort and the AP has no problem with its 1/2 standard rate turns.  Of=20 course, the only time I use standard rate turns are at low speeds.  The= n=20 again, everything changes in a 60 degree banked turn as there is no effort=20 required to retain the bank but heavy handed back pressure is needed to= =20 retain the altitude (depending on whether it is to the left or right).
 
Grayhawk
 
PS 12 years of flying this powered lawn dart and she still pu= ts a=20 smile on my face each time we go up, flit hither and yon and later come= =20 back down to Mother Earth.  How sweet it is.
 
In a message dated 7/26/2008 7:30:28 A.M. Central Daylight Time,=20 billhogarty@hughes.net writes:
<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>For=20 Greyhawk:

Although my ailerons move freely on the ground, the = =20 in-flight force
required in my 4P is greater than I would hope for.&nb= sp;=20 I was considering
gap seals as a possible remedy.  Since I unders= tand=20 that you have
installed gap seals on your machine, could we have your=20 before and after
experience with respect to aileron force and/or any o= ther=20 secrets you
might like to share.

BTW, does any other L-IV have=20= this=20 problem?

Thanks, Bill Hogarty

--
For archives and unsub=20 http://mail.lancaironline.net:81/lists/lml/List.html



Get fantasy football wi= th free live scoring. Sign up for FanHouse Fantasy Foot= ball today.
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