X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 08 Sep 2008 15:30:34 -0400 Message-ID: X-Original-Return-Path: Received: from web55704.mail.re3.yahoo.com ([216.252.110.35] verified) by logan.com (CommuniGate Pro SMTP 5.2.7) with SMTP id 3119389 for lml@lancaironline.net; Mon, 08 Sep 2008 10:38:56 -0400 Received: (qmail 18445 invoked by uid 60001); 8 Sep 2008 14:38:55 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:MIME-Version:Content-Type:Message-ID; b=3PXWJh/d8ddoVg/EtEE54Ad/siiZ6Quh7hB3M4tQy39tdxumwntvFizmlcT1+3D8kpXyuee7bl8CCxGHtzIdiqHN2Z9H8Qd2wiM5+Or5hk7WHPzNIec6ChfpDjt58KacqChEZ/VdhHHkzymVDvI/+8doO0U0vdQ6B21mcdFa59M=; X-YMail-OSG: YpmVY6IVM1lA5q.lqIiv7dQIVugwTocMh_uFqebGxxHLaNecwjkz1qDLdnkwnftpn9xC5yF615c7pZDUc54BgsRc24_ybu1PX51.iwtV4ppWVOjurtraVt0oMI2FMa1M4T3M7ga.R4w7jh8Ttp1I Received: from [71.31.132.122] by web55704.mail.re3.yahoo.com via HTTP; Mon, 08 Sep 2008 07:38:55 PDT X-Mailer: YahooMailRC/1096.28 YahooMailWebService/0.7.218.2 X-Original-Date: Mon, 8 Sep 2008 07:38:55 -0700 (PDT) From: J H Webb Subject: Re: [LML] Re: unfeathering accumulator X-Original-To: Lancair Mailing List MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-906912462-1220884735=:16938" X-Original-Message-ID: <404169.16938.qm@web55704.mail.re3.yahoo.com> --0-906912462-1220884735=:16938 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Robert, =0A=A0=0A=A0 You might try feathering your propeller over a long ai= rport at a safe altitude (above 5000') and see how long it takes to unfeath= er.=A0 Please don't get too low before you decide to land with it feathered= , plan ahead. Additionally check the unfeathering on the ground, this is th= e situation that=A0requires=A0unfeathering paddles and it is not a lot bett= er in the air. We had an engine that did not want to start after checking t= he feathering over a long airport and lost over 3500' before it unfeathered= . Also you don't need a starter with an accumulator to unfeather. I do a lo= t of twin engine checkrides and I love the aircraft with unfeathering accum= ulators, easy on the starter and on the pilots. We had a Mooney with a Hart= zell full feathering prop and a Lancair with a full feathering prop (both M= T and Hartzell) and the accumulator was very nice on all three applications= . The Mooney Rocket was very hard to unfeather in flight before we added th= e accumulator, the Lancair was slightly better with the Hartzell prop.=0A=A0=0AJack Webb= =0AL360 & LIV=0A=0A=0A=0A----- Original Message ----=0AFrom: Lancair =0ATo: lml@lancaironline.net=0ASent: Sunday, September 7, = 2008 6:08:38 PM=0ASubject: [LML] Re: unfeathering accumulator=0A=0A=0AI=A0i= nstalled a 4-bladed feathering MT prop and they said that if the engine is = producing oil pressure you do not need an accumulator.=A0 =0A=A0=0ARobert M= . Simon=0AES-P N301ES=0A=0A=0A --0-906912462-1220884735=:16938 Content-Type: text/html; charset=us-ascii

Robert,

 

  You might try feathering your propeller over a long airport at a safe altitude (above 5000') and see how long it takes to unfeather.  Please don't get too low before you decide to land with it feathered, plan ahead. Additionally check the unfeathering on the ground, this is the situation that requires unfeathering paddles and it is not a lot better in the air. We had an engine that did not want to start after checking the feathering over a long airport and lost over 3500' before it unfeathered. Also you don't need a starter with an accumulator to unfeather. I do a lot of twin engine checkrides and I love the aircraft with unfeathering accumulators, easy on the starter and on the pilots. We had a Mooney with a Hartzell full feathering prop and a Lancair with a full feathering prop (both MT and Hartzell) and the accumulator was very nice on all three applications. The Mooney Rocket was very hard to unfeather in flight before we added the accumulator, the Lancair was slightly better with the Hartzell prop.

 

Jack Webb

L360 & LIV



----- Original Message ----
From: Lancair <lancair-esp@ustek.com>
To: lml@lancaironline.net
Sent: Sunday, September 7, 2008 6:08:38 PM
Subject: [LML] Re: unfeathering accumulator

I installed a 4-bladed feathering MT prop and they said that if the engine is producing oil pressure you do not need an accumulator. 
 
Robert M. Simon
ES-P N301ES

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