X-Virus-Scanned: clean according to Sophos on Logan.com X-PolluStop: No license found, only first 5 messages were scanned Return-Path: Sender: To: lml Date: Mon, 26 Jun 2006 18:03:09 -0400 Message-ID: X-Original-Return-Path: Received: from sfa.gami.com ([68.89.254.162] verified) by logan.com (CommuniGate Pro SMTP 5.1c.1) with ESMTP id 1206396 for lml@lancaironline.net; Mon, 26 Jun 2006 08:36:15 -0400 Received-SPF: none receiver=logan.com; client-ip=68.89.254.162; envelope-from=gwbraly@gami.com Received: from localhost (localhost.localdomain [127.0.0.1]) by sfa.gami.com (Postfix) with ESMTP id 3362A29C06E for ; Mon, 26 Jun 2006 07:35:28 -0500 (CDT) Received: from sdf1.mail.taturbo.com (unknown [10.10.10.173]) by sfa.gami.com (Postfix) with ESMTP id 4EF1B29C05E for ; Mon, 26 Jun 2006 07:35:26 -0500 (CDT) Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C6991C.FFC29D1D" X-MimeOLE: Produced By Microsoft Exchange V6.0.6603.0 Subject: RE: [LML] Straight bore vs choke X-Original-Date: Mon, 26 Jun 2006 07:35:25 -0500 X-Original-Message-ID: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [LML] Straight bore vs choke Thread-Index: AcaY4NgdNzN01CKzT2qycYFgH8qFbwAO8nqw From: "George Braly" X-Original-To: "Lancair Mailing List" X-Virus-Scanned: by amavisd-new-2.3.2 (20050629) (Debian) at gami.com This is a multi-part message in MIME format. ------_=_NextPart_001_01C6991C.FFC29D1D Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable =20 =20 We have lots of long duration turbo experience with choked cylinders that has given us good results.=20 =20 Not sure there is a problem that needs to be addressed and I don't know how not having the choke solves the problem that is not presented. =20 It is possible to wear out the choke rather rapidly by not having sufficient full power fuel flow. =20 Regards, George =20 _____ =20 From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Tom Gourley Sent: Monday, June 26, 2006 12:25 AM To: Lancair Mailing List Subject: [LML] Straight bore vs choke =20 I recently ran across the website for Chuck Ney Enterpreses (http://www.chuckneyent.com/) and read where he advocates straight bore cylinders instead of tapered, or choked, cylinders. I'm assuming the engine manufacturers have good reasons for designing taper into their cylinders (variable temperature expansion characteristics over the length of the cylinder?) Mr. Ney, on the other hand, claims a vast amount of experience indicating better performance and longevity by boring the cylinders straight. I know we have some very knowledgeable engine people on the LML so I'd like to get their take on straight vs choke. =20 Tom Gourley Legacy builder =20 ------_=_NextPart_001_01C6991C.FFC29D1D Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

We have lots of long duration = turbo experience with choked cylinders that has given us good results. =

Not sure there is a problem that = needs to be addressed and I don’t know how not having the choke solves the = problem that is not presented.

It is possible to wear out the = choke rather rapidly by not having sufficient full power fuel = flow.

Regards, = George

From: = Lancair Mailing List = [mailto:lml@lancaironline.net] On Behalf Of Tom Gourley
Sent: Monday, June 26, = 2006 12:25 AM
To: Lancair Mailing List
Subject: [LML] Straight = bore vs choke

I recently ran across the website for Chuck Ney = Enterpreses (http://www.chuckneyent.com/) = and read where he advocates straight bore cylinders instead of tapered, = or choked, cylinders. I'm assuming the engine manufacturers have good reasons for designing taper into their cylinders (variable temperature expansion characteristics over the length of the cylinder?) Mr. Ney, on = the other hand, claims a vast amount of experience indicating better = performance and longevity by boring the cylinders straight. I know we have = some very knowledgeable engine people on the LML so I'd like to get their take on straight vs choke.

Tom Gourley

Legacy builder

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