X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 2 [X] Return-Path: Received: from imo-d03.mx.aol.com ([205.188.157.35] verified) by logan.com (CommuniGate Pro SMTP 5.1.8) with ESMTP id 1996171 for flyrotary@lancaironline.net; Fri, 20 Apr 2007 13:35:34 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.188.157.35; envelope-from=Lehanover@aol.com Received: from Lehanover@aol.com by imo-d03.mx.aol.com (mail_out_v38_r9.1.) id q.d08.e9454c2 (39332) for ; Fri, 20 Apr 2007 13:34:11 -0400 (EDT) From: Lehanover@aol.com Message-ID: Date: Fri, 20 Apr 2007 13:34:10 EDT Subject: Re: [FlyRotary] Re: Single Rotor Testing To: flyrotary@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1177090450" X-Mailer: 9.0 Security Edition for Windows sub 5366 X-Spam-Flag: NO -------------------------------1177090450 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 4/20/2007 10:57:32 A.M. Eastern Daylight Time, echristley@nc.rr.com writes: Lynn, do you have any dyno data that would correspond to the BSFC an airplane would use in cruise, ie extremely leaned? I'm guessing the answer is, "No, what would a racer do with that?", but it can't hurt to ask. I don't have anything like that, However, that same engine leans out on top because carbs do that even with a bunch of tricks to help them stay rich. So at 9,000 RPM we see .662 BSFC at 241.9 HP and A/F at 13.2, EGTs at 1583 and 1587. Not exactly lean, but getting there. Go to the "Nopistons" site and look at dyno sheets. You may find one lean enough to give you an idea. With a CD ignition system they can run much leaner, although the power and EGT is going down for lack of fuel. Lynn E. Hanover ************************************** See what's free at http://www.aol.com. -------------------------------1177090450 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
In a message dated 4/20/2007 10:57:32 A.M. Eastern Daylight Time,=20 echristley@nc.rr.com writes:
<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>Lynn, do=20 you have any dyno data that would correspond to the BSFC an
airplane w= ould=20 use in cruise, ie extremely leaned?  I'm guessing the
answer is,=20= "No,=20 what would a racer do with that?", but it can't hurt to=20 ask.
I don't have anything like that, However, that same engine leans out on= top=20 because carbs do that even with a bunch of tricks to help them stay rich.
 
So at 9,000 RPM we see .662 BSFC at 241.9 HP and A/F at 13.2, EGTs at 1= 583=20 and 1587. Not exactly lean, but getting there.  Go to the "Nopistons" s= ite=20 and look at dyno sheets. You may find one lean enough to give you an idea.
 
With a CD ignition system they can run much leaner, although the power=20= and=20 EGT is going down for lack of fuel.
 
 
Lynn E. Hanover



See w= hat's free at AOL.= com.
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