Return-Path: Sender: "Marvin Kaye" To: lml@lancaironline.net Date: Sat, 06 Nov 2004 21:28:13 -0500 Message-ID: X-Original-Return-Path: Received: from neti.saber.net ([66.52.152.2] verified) by logan.com (CommuniGate Pro SMTP 4.2.5) with ESMTP-TLS id 521010 for lml@lancaironline.net; Sat, 06 Nov 2004 20:13:27 -0500 Received-SPF: none receiver=logan.com; client-ip=66.52.152.2; envelope-from=twobarons@saber.net Received: from userfgqekf9u0c (66-53-179-131.oak.saber.net [66.53.179.131]) by neti.saber.net (8.12.11/8.12.11) with SMTP id iA71CrUH006633 for ; Sat, 6 Nov 2004 17:12:55 -0800 (PST) X-Original-Message-ID: <005501c4c466$ef38c580$83b33542@userfgqekf9u0c> From: "belle and Fred Baron" X-Original-To: "Lancair List" Subject: LNC2 Cooling X-Original-Date: Sat, 6 Nov 2004 17:12:01 -0800 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0052_01C4C423.BB32E1F0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 This is a multi-part message in MIME format. ------=_NextPart_000_0052_01C4C423.BB32E1F0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I really do appreciate all the posts in the last month or so on cooling = and insight gained from Ada. However, I did find it all a bit disjointed = but was able to pull bits a pieces of info from all the posts. This = subject is very hard to verbalize, but I will try. Cyl.# 1- Always has been very cool (170 C) ,so it is a non issue. Cyl# 2-The hottest (200 to 210 C) in cruise. I actually had to replace = it at 850 hours due to it being "out of round".From the List I learned = that you have to drive the air down thru the FRONT on # 2, at the flat = spot, where there are very small to no cooling fins. This was very easy = to do by cutting 3/4" off of the 45 degrees ramp that is actually = touching the cylinder. This opened up a gap about 1/4" directly in the = front center of # 2. No air was going over the front lower quarter of # = 2. Now air is going over and under # 2. The result is a 10 to 15 degree = C drop in temp. The piece that I cut off has no structural value to the = baffling and looks like it was designed to force the air up into the = plenum area. Cyl # 4- Always ran cool like # 1 ( I need 4 ahead of 3 as a reference) Cyl # 4 has a curved baffling piece about 1/2" from the flat spot in = the very rear of the engine that allows air to be forced downward at = the very place it needs the most air.Again, a flat spot with very small = if any cooling fins. Cyl#3- Always hot like # 2. Looking at the rear of # 3, you can see how = the air cannot go through the top rear of 3 # (guess what, the flat = spot).It should be a fairly simple matter to make the rear of # 3 look = like the rear of # 4 ( a curved piece that stands off from the top rear = of # 3) I'm sorry that this is so wordy, but that is the nature of conversation. = Also, I really love my airplane, but feel that Lancair let us down in = the design of the baffling. I will report on the progress of # 3 next = week. Sincerely, Fred N. Baron, Lancair 9BF (Don't fly like my brother) ------=_NextPart_000_0052_01C4C423.BB32E1F0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
I really do appreciate all = the posts in=20 the last month or so on cooling and insight gained from Ada. However, I = did find=20 it all a bit disjointed but was able to pull bits a pieces of info from = all the=20 posts. This subject is very hard to verbalize, but I will = try.
Cyl.# 1- Always has been very = cool (170=20 C) ,so it is a non issue.
Cyl# 2-The hottest (200 to = 210 C) in=20 cruise. I actually had to replace it at 850 hours due to it being "out = of=20 round".From the List I learned that you have to drive the air down thru = the=20 FRONT on # 2, at the flat spot, where there are  very small to no = cooling=20 fins. This was very easy to do by cutting 3/4" off of the 45 degrees = ramp that=20 is actually touching the cylinder. This opened up a gap about 1/4" = directly in=20 the front center of # 2. No air was going over the front lower quarter = of # 2.=20 Now air is going over and under # 2. The result is a 10 to 15 degree C = drop in=20 temp. The piece that I cut off has no structural value to the baffling = and looks=20 like it was designed to force the air up into the plenum=20 area.
Cyl # 4- Always ran cool like = # 1 ( I=20 need 4 ahead of 3 as a reference)
 Cyl # 4 has a curved = baffling=20 piece about 1/2" from the flat spot in the very rear of the = engine=20 that allows air to be forced downward  at the very place it needs the most = air.Again, a=20 flat spot with very small if any cooling fins.
Cyl#3- Always hot like # 2. = Looking at=20 the rear of # 3, you can see how the air cannot  go through the top = rear of=20 3 # (guess what, the flat spot).It should be a fairly simple matter to = make the=20 rear of # 3 look like the rear of # 4 ( a curved piece that stands off = from the=20 top rear of # 3)
I'm sorry that this is so = wordy, but that=20 is the nature of conversation. Also, I really love my airplane, but feel = that=20 Lancair let us down in the design of the baffling. I will report on = the=20 progress of # 3 next week.
Sincerely, Fred N. Baron, = Lancair 9BF=20 (Don't fly like my brother)
------=_NextPart_000_0052_01C4C423.BB32E1F0--