Return-Path: Sender: (Marvin Kaye) To: lml@lancaironline.net Date: Sun, 29 Aug 2004 11:05:57 -0400 Message-ID: X-Original-Return-Path: Received: from imo-m28.mx.aol.com ([64.12.137.9] verified) by logan.com (CommuniGate Pro SMTP 4.2) with ESMTP id 383347 for lml@lancaironline.net; Sun, 29 Aug 2004 08:54:38 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.137.9; envelope-from=VTAILJEFF@aol.com Received: from VTAILJEFF@aol.com by imo-m28.mx.aol.com (mail_out_v37_r3.4.) id q.129.4a145e7a (14374) for ; Sun, 29 Aug 2004 08:54:00 -0400 (EDT) From: VTAILJEFF@aol.com X-Original-Message-ID: <129.4a145e7a.2e632be8@aol.com> X-Original-Date: Sun, 29 Aug 2004 08:54:00 EDT Subject: Re: [LML] Re: LOP vs ROP X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1093784040" X-Mailer: 9.0 for Windows sub 5112 -------------------------------1093784040 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit George, I have done climb testing from the 120 KIAS to 170 KIAS range in five knot increments and have yet to best much more than 1100'-1200'/ minute sustained. I am not talking about cooling issues here-- just power available versus power required. My fuel flows are in 42 gallon/ per hour range. I do not recall TIT from the test. Take these figures here with a large grain of salt as I am working strictly from memory. I will get back to the testing as soon as the weather improves here. For those with cooling issues (as most of us seem to have) I have had a .75 x 1.5 inch hole cut in the forward right baffle in front of the number five cylinder to improve cooling to it. I have also tried to improve the number two cylinder (now the hottest cylinder) by standing off the oil cooler diverter a bit. I have the Lancair factory built baffling-- not the builder's built baffling you may have seen on other aircraft. In cruise, on a standard day plus in the mid teens, running 75-100 LOP at 31.5" and 2600 RPM at 17.7 gph, I see CHTS in the 330 -350 range. I am always running LOP-- GO FAR. Regards, Jeff -------------------------------1093784040 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

George,

I have done climb testing from the 120 KIAS to 170 KIAS range in five k= not increments and have yet to best much more than 1100'-1200'/ minute susta= ined. I am not talking about cooling issues here-- just power available vers= us power required. My fuel flows are in 42 gallon/ per hour range. I do= not recall TIT from the test. Take these figures here with a large grain of= salt as I am working strictly from memory. I will get back to the testing a= s soon as the weather improves here.

For those with cooling issues (as most of us seem to have) I have had a= .75 x 1.5 inch hole cut in the forward right baffle in front of the number=20= five cylinder to improve cooling to it. I have also tried to improve th= e number two cylinder (now the hottest cylinder) by standing off the oil coo= ler diverter a bit. I have the Lancair factory built baffling-- not the buil= der's built baffling you may have seen on other aircraft.

In cruise, on a standard day plus in the mid teens, running 75-100 LOP=20= at 31.5" and 2600 RPM at 17.7 gph, I see CHTS in the 330 -350 range. I=20= am always running LOP-- GO FAR.

Regards,

Jeff

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