X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from eastrmmtao104.cox.net ([68.230.240.46] verified) by logan.com (CommuniGate Pro SMTP 5.2.5) with ESMTP id 3041336 for flyrotary@lancaironline.net; Thu, 24 Jul 2008 23:43:39 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.240.46; envelope-from=paulo264@cox.net Received: from eastrmimpo02.cox.net ([68.1.16.120]) by eastrmmtao104.cox.net (InterMail vM.7.08.02.01 201-2186-121-102-20070209) with ESMTP id <20080725034301.KDPP2096.eastrmmtao104.cox.net@eastrmimpo02.cox.net> for ; Thu, 24 Jul 2008 23:43:01 -0400 Received: from paul400gb ([68.109.12.179]) by eastrmimpo02.cox.net with bizsmtp id u3j01Z0063rn6h8023j0Uh; Thu, 24 Jul 2008 23:43:00 -0400 From: "Paul Vermillion" To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: RE: [FlyRotary] Re: 13B--- N/A vs. Turbo engine buildup? Date: Thu, 24 Jul 2008 22:43:00 -0500 Message-ID: <00a901c8ee08$891df4d0$9b59de70$@net> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00AA_01C8EDDE.A047ECD0" X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: Acjt7Y5FZvMvDx6KSlyP4eaNF1+uUQAGturA Content-Language: en-us This is a multipart message in MIME format. ------=_NextPart_000_00AA_01C8EDDE.A047ECD0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Al G, Mark, & others---Thanks for your inputs. Paul & Don From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Al Gietzen Sent: Thursday, July 24, 2008 8:31 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: 13B--- N/A vs. Turbo engine buildup? Would there be a compression problem running it sans turbo? (Hearsay has it that it would be a "dog".) Definitely would not be a "dog". Best I could figure based on data that Mazda generated, at 5500-6000 rpm the 9.0 compression could be about 4% penalty vs 9.7. More at lower rpm. And that would be for WOT. If you run a 2.85 : 1 re-drive ratio and run 6500 -7000 it's likely there is not a measurable difference. Al G ------=_NextPart_000_00AA_01C8EDDE.A047ECD0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Al G, Mark, & others---Thanks for your inputs. Paul & Don

From:= Rotary = motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Al = Gietzen
Sent: Thursday, July 24, 2008 8:31 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: 13B--- N/A vs. Turbo engine = buildup?

Would there be a compression problem = running it sans turbo? (Hearsay has it that it would be a "dog".) =

= Definitely would not be a “dog”. Best I could figure based on = data that Mazda generated, at 5500-6000 rpm the 9.0 compression could be about 4% = penalty vs 9.7. More at lower rpm. And that would be for WOT. If you = run a 2.85 : 1 re-drive ratio and run 6500 -7000 it’s likely there is = not a measurable difference.

Al = G

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