X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 01 Oct 2008 22:54:53 -0400 Message-ID: X-Original-Return-Path: Received: from [64.12.143.99] (HELO imo-m11.mail.aol.com) by logan.com (CommuniGate Pro SMTP 5.2.8) with ESMTP id 3195453 for lml@lancaironline.net; Wed, 01 Oct 2008 20:26:28 -0400 Received: from Sky2high@aol.com by imo-m11.mx.aol.com (mail_out_v39.1.) id q.bc4.33f2662a (41812) for ; Wed, 1 Oct 2008 20:26:22 -0400 (EDT) From: Sky2high@aol.com X-Original-Message-ID: X-Original-Date: Wed, 1 Oct 2008 20:26:22 EDT Subject: Re: [LML] Re: Small tail vs. large tail X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1222907182" X-Mailer: Unknown sub 34 X-Spam-Flag:NO -------------------------------1222907182 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: quoted-printable Lorn, =20 Most interesting.. Your empty weight CG would seem to indicate a more rear= =20 ward base CG. Yet, loaded with your Falstaffian self,header full, etc., you= r=20 CG and mine would be quite similar (mine =3D 24.8). Yet, I have full eleva= tor=20 authority. Hmmmmm. Are you getting the proper up deflection of the=20 elevator? Same Question to Mark................ =20 Scott =20 PS Almost all of my landings are with the full 45 degrees of flap... =20 =20 In a message dated 10/1/2008 3:27:17 P.M. Central Daylight Time, =20 lorn@dynacomm.us writes: Mark & Scott, My empty CG is 22.3". With a 150# pilot and 8 gal in the header I =20 would be at 24.5". My fore and aft CG limits are 24.9" and 30.6". With my harmonic dampener, Aero Composites prop, me (250#), 20# of =20 tools up front, 5 more in back and full header. I get: 25.7". I land =20 like this some times but can only use 25=B0 of flap. No wonder I don't =20 have enough elevator. Loaded up a lot to 1,900#, my CG is 29.5" and thats pretty far back. Lorn > From: Sky2high@aol.com > Date: September 30, 2008 10:47:55 AM GMT-04:00 > > Mark, > > Even more interrrrresting........ > > What is your empty weight CG? Mine is 20.8" Also, with a 150# =20 > pilot and 8 gal in the header my CG would be out of the forward =20 > envelope at 23.4"" (12% MAC). BTW, I have a 12# harmonic damper on =20 > the flywheel along with the heaviest Hartzell prop. > > What is your flap setting for these landings? Moving the flaps up =20 > somewhat can change the pitch authority and I wonder if you have =20 > tried using the flaps to assist in elevator authority. > >> Scott >> >> In a message dated 9/29/2008 12:14:46 P.M. Central Daylight Time,=20 mjrav@comcast.net =20 >> writes: >> I suppose I qualify at 150 lbs. >> Std 360, battery in the footwell, Hartzel CS prop. >> >> Generally, I make a point to NOT have all fuel in the header on a =20 >> lightweight landing. Having it 1/4 to 1/2 full is safe enough. >> What happens is that I run out of aft stick travel in the flare and =20 >> will have a hard landing if I'm not very close to wheels down. >> The further foreward the CG, the faster the landing speed must be. =20 >> Mostly, it's just hard on the tires. >> . >> . >> Mark Ravinski >> 360 1447 hrs 1077 of it mine. -- For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.html **************Looking for simple solutions to your real-life financial=20 challenges? Check out WalletPop for the latest news and information, tips a= nd=20 calculators. (http://www.walletpop.com/?NCID=3Demlcntuswall00000001) -------------------------------1222907182 Content-Type: text/html; charset="ISO-8859-1" Content-Transfer-Encoding: quoted-printable

Lorn,

Most interesting.. Your empty weight CG would seem to indicate a=20= more=20 rear ward base CG. Yet, loaded with your Falstaffian self,header full, etc.,= =20 your CG and mine would be quite similar (mine =3D 24.8). Yet, I have=20 full elevator authority. Hmmmmm. Are you getting the=20 proper up deflection of the elevator? Same Question to=20 Mark................

Scott

PS Almost all of my landings are with the full 45 degrees of flap...

In a message dated 10/1/2008 3:27:17 P.M. Central Daylight Time,=20 lorn@dynacomm.us writes:

<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>Mark=20 & Scott,

My empty CG is 22.3". With a 150# pilot and 8 gal in t= he=20 header I
would be at 24.5".

My fore and aft CG limits are= =20 24.9" and 30.6".

With my harmonic dampener, Aero Composites prop, m= e=20 (250#), 20# of
tools up front, 5 more in back and full header. I= =20 get: 25.7". I land
like this some times but can only use 25=B0 o= f=20 flap. No wonder I don't
have enough elevator.

Loaded up a= lot=20 to 1,900#, my CG is 29.5" and thats pretty far back.

Lorn

&g= t;=20 From: Sky2high@aol.com
> Date: September 30, 2008 10:47:55 AM=20 GMT-04:00
>
> Mark,
>
> Even more=20 interrrrresting........
>
> What is your empty weight CG? = ;=20 Mine is 20.8" Also, with a 150#
> pilot and 8 gal in th= e=20 header my CG would be out of the forward
> envelope at 23.4""= =20 (12% MAC). BTW, I have a 12# harmonic damper on
> the=20 flywheel along with the heaviest Hartzell prop.
>
> What is yo= ur=20 flap setting for these landings? Moving the flaps up
>=20 somewhat can change the pitch authority and I wonder if you have =20
> tried using the flaps to assist in elevator=20 authority.
>
>> Scott
>>
>> In a message=20 dated 9/29/2008 12:14:46 P.M. Central Daylight Time, mjrav@comcast.net=20
>> writes:
>> I suppose I qualify at 150=20 lbs.
>> Std 360, battery in the footwell, Hartzel CS=20 prop.
>>
>> Generally, I make a point to NOT have all fu= el=20 in the header on a
>> lightweight landing. Having it= 1/4=20 to 1/2 full is safe enough.
>> What happens is that I run out of=20= aft=20 stick travel in the flare and
>> will have a hard landing=20= if=20 I'm not very close to wheels down.
>> The further foreward the CG= ,=20 the faster the landing speed must be.
>> Mostly, it'= s=20 just hard on the tires.
>> .
>> .
>> Mark=20 Ravinski
>> 360 1447 hrs 1077 of it=20 mine.

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

Looking for simple solution= s to your real-life financial challenges? Check out WalletPop for the latest news an= d information, tips and calculators.

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