X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sun, 09 May 2010 16:56:00 -0400 Message-ID: X-Original-Return-Path: Received: from smtp-auth-04.mx.pitdc1.expedient.net ([206.210.66.137] verified) by logan.com (CommuniGate Pro SMTP 5.3.6) with ESMTPS id 4252237 for lml@lancaironline.net; Sat, 08 May 2010 09:46:44 -0400 Received-SPF: none receiver=logan.com; client-ip=206.210.66.137; envelope-from=rpastusek@htii.com Received: from HTBOB001 (static-72-66-86-7.washdc.fios.verizon.net [72.66.86.7]) by smtp-auth-04.mx.pitdc1.expedient.net (Postfix) with ESMTPSA id DA389E561F for ; Sat, 8 May 2010 09:46:07 -0400 (EDT) From: "Robert Pastusek" X-Original-To: "'Lancair Mailing List'" References: In-Reply-To: Subject: RE: [LML] Re: Cabin Door Window-IV-P X-Original-Date: Sat, 8 May 2010 09:46:07 -0400 X-Original-Message-ID: <04e101caeeb4$cfaee4f0$6f0caed0$@com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_04E2_01CAEE93.489D44F0" X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: AcruSB+t8k4SAVheRzKCOoPfGov4VgAa+TYQ Content-Language: en-us This is a multi-part message in MIME format. ------=_NextPart_000_04E2_01CAEE93.489D44F0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Gentlemen, We started out discussing a serious malfunction with our airplanes, and it's degenerated to an advertising campaign for certain commercial products.not only that, but you've managed to introduce yet another failure mechanism for the original problem.a busted window. Bob From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of David Standish Sent: Friday, May 07, 2010 8:48 PM To: lml@lancaironline.net Subject: [LML] Re: Cabin Door Window-IV-P This might help. http://www.brookstone.com/sl/product/49014-n-a-p-luxe-travel-pillow.html John Hafen wrote: Are you sure the noise wasn't from dosing off and nodding forward, hitting the top of your headset on the ceiling -- and hearing a "thump" in your headset before waking up again? Happens to me all the time. Found out there's nothing wrong with the plane. John Hafen On May 5, 2010, at 6:24 PM, Colyn Case wrote: My noise didn't sound like it was coming from the engine. more like something banging on the fuselage. Just happened 2 or 3 times and then stopped. I had done some carbon work since the last flight so possibly it was some bubbles popping but it seemed loud for that. My engine is set up for 45 gph in the climb. On May 4, 2010, at 4:23 PM, Robert Pastusek wrote: Colyn, On the loud banging/popping, could the engine be pre-igniting? This will definitely cause what you describe, and is definitely not good on it. Do you climb at full rich mixture? If so, pre-ignition is not likely.but possible. If you are leaning in the climb, try pushing in the mixture the next time it happens to see if that corrects it. Also, you can get a pop/bang from "after-fire" in descent with the mixture rich. This is caused by unburned fuel being dumped into the exhaust during descent when the engine is essentially windmilling.not producing much power. The fuel mixture will occasionally ignite in the exhaust stack causing a definite pop/bang. You've got the old window for asking. I don't have it out yet.probably be June as my "real work" is significantly interfering with my fun these days, but I intend to try to get it out in one piece so I can try to see where the break started, and why. According to Ed, the crankshaft failed between the bearing journal and the prop flange.right in the radius. Ed says you can see a crack through at least half the material, then the rest "tore off", bending/distorting the metal in the process. Don't know if this was one of the "bad" Continental cranks that got through the check of a few years ago or not. The NTSB has the engine and is analyzing now. Expect to hear more about this when available. Bob From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Colyn Case Sent: Monday, May 03, 2010 6:40 PM To: lml@lancaironline.net Subject: [LML] Re: Cabin Door Window-IV-P ------=_NextPart_000_04E2_01CAEE93.489D44F0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Gentlemen,

 

We started out discussing a serious malfunction with our airplanes, and it’s degenerated to an advertising campaign for = certain commercial products…not only that, but you’ve managed to introduce yet = another failure mechanism for the original problem…a busted = window…

 

Bob

 

From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of David Standish
Sent: Friday, May 07, 2010 8:48 PM
To: lml@lancaironline.net
Subject: [LML] Re: Cabin Door Window-IV-P

 



This might help.
http://www.brookstone.com/sl/product/49014-n-a-p-luxe-travel-pil= low.html



John Hafen wrote:

Are you sure the noise wasn't from dosing off and = nodding forward, hitting the top of your headset on the ceiling -- and hearing a "thump" in your headset before waking up again? =

 

Happens to me all the time.  Found out there's = nothing wrong with the plane.

 

John Hafen

 

 

On May 5, 2010, at 6:24 PM, Colyn Case = wrote:



My noise didn't sound like it was coming from the = engine.  more like something banging on the fuselage.   Just happened = 2 or 3 times and then stopped.   I had done some carbon work since the = last flight so possibly it was some bubbles popping but it seemed loud for = that.

 

My engine is set up for 45 gph in the = climb.

 

On May 4, 2010, at 4:23 PM, Robert Pastusek = wrote:



Colyn,

 

On the loud banging/popping, could the engine be = pre-igniting? This will definitely cause what you describe, and is definitely not good = on it. Do you climb at full rich mixture? If so, pre-ignition is not = likely…but possible. If you are leaning in the climb, try pushing in the mixture = the next time it happens to see if that corrects it. Also, you can get a pop/bang = from “after-fire” in descent with the mixture rich. This is = caused by unburned fuel being dumped into the exhaust during descent when the engine is = essentially windmilling…not producing much power… The fuel mixture will = occasionally ignite in the exhaust stack causing a definite pop/bang.

 

You’ve got the old window for asking. I don’t = have it out yet…probably be June as my “real work” is = significantly interfering with my fun these days, but I intend to try to get it out in one piece so I can try = to see where the break started, and why.

 

According to Ed, the crankshaft failed between the = bearing journal and the prop flange…right in the radius. Ed says you can = see a crack through at least half the material, then the rest “tore = off”, bending/distorting the metal in the process. Don’t know if this = was one of the “bad” Continental cranks that got through the check of a few = years ago or not. The NTSB has the engine and is analyzing now. Expect to hear more about = this when available.

 

Bob

 

 

From:=  Lancair = Mailing List [mailto:lml@lancaironline.net] On Behalf Of Colyn Case
Sent: Monday, May = 03, 2010 6:40 PM
To: lml@lancaironline.net
Subject: [LML] = Re: Cabin Door Window-IV-P

 

 

 

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