Return-Path: <13brv3@bellsouth.net> Received: from imf18aec.mail.bellsouth.net ([205.152.59.66] verified) by logan.com (CommuniGate Pro SMTP 4.1.3) with ESMTP id 2579415 for flyrotary@lancaironline.net; Sun, 14 Sep 2003 21:24:04 -0400 Received: from rad ([68.212.12.251]) by imf18aec.mail.bellsouth.net (InterMail vM.5.01.05.27 201-253-122-126-127-20021220) with ESMTP id <20030915012404.WIVF13779.imf18aec.mail.bellsouth.net@rad> for ; Sun, 14 Sep 2003 21:24:04 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Good news, Bad news Date: Sun, 14 Sep 2003 20:24:05 -0500 Message-ID: <006001c37b28$0dbb1aa0$0201a8c0@rad> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0061_01C37AFE.24E75C90" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4510 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Importance: Normal In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_0061_01C37AFE.24E75C90 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable I am running a 70 inch five blade warp drive on my coot with a 2.95 = gear ratio and I pitch my prop at 16 to 18 degrees of pitch. What ratio are you running, it seems that 12 to 14 degrees on a three = blade is a bit flat to get any speed unless you have a 2.17 ratio. Ken welter=20 =20 Yep, it's a 2.17. =20 =20 Rusty =20 ------=_NextPart_000_0061_01C37AFE.24E75C90 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Message
  I am running a 70 inch five blade warp drive on my coot with = a 2.95=20 gear ratio and I pitch my prop at 16 to 18 degrees of pitch.
 What ratio are you running, it seems that 12 to 14 degrees on = a three=20 blade is a bit flat to get any speed unless you have a 2.17 ratio.

 Ken welter 
 
Yep, it's a=20 2.17.  
 
Rusty
 
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