X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao105.cox.net ([68.230.241.41] verified) by logan.com (CommuniGate Pro SMTP 5.2.16) with ESMTP id 3889895 for flyrotary@lancaironline.net; Sun, 18 Oct 2009 09:46:25 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.41; envelope-from=alventures@cox.net Received: from fed1rmimpo03.cox.net ([70.169.32.75]) by fed1rmmtao105.cox.net (InterMail vM.8.00.01.00 201-2244-105-20090324) with ESMTP id <20091018134549.ZJXD21106.fed1rmmtao105.cox.net@fed1rmimpo03.cox.net> for ; Sun, 18 Oct 2009 09:45:49 -0400 Received: from BigAl ([72.192.133.78]) by fed1rmimpo03.cox.net with bizsmtp id uDlo1c0081hf1Cg04Dlolh; Sun, 18 Oct 2009 09:45:48 -0400 X-VR-Score: 0.00 X-Authority-Analysis: v=1.0 c=1 a=YQOyg4Vb_xC0bV2nzp0A:9 a=H4qnsVKEq3vsoEm3qiS6ybGJABcA:4 a=jErGi1aByc6MoWQd:21 a=p9KPQEZ6cUQFtLq1:21 a=zyQvNJtwxFskm4Rt1HwA:9 a=acdLrmUXPiNRGvnF1gMA:7 a=l6KrZG5kjajH-ikse84RuAejw7cA:4 X-CM-Score: 0.00 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Static rpm Date: Sun, 18 Oct 2009 06:46:29 -0800 Message-ID: <0B5725A4B63243FD8DD2970BEC6D795C@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0006_01CA4FBE.B8EB2840" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6856 Importance: Normal Thread-Index: AcpPWFG0ZHrv0JiVTIyCEE9dW3Z18gAp+rYg In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 This is a multi-part message in MIME format. ------=_NextPart_000_0006_01CA4FBE.B8EB2840 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Al, =20 I have the IVO Magnum in flight adjustable 3 blade prop with 45 to 105 = inch pitch range. I believe it is 68 inches long, but it MAY be 66 inches. = I do not think I could go much longer as I would be concerned about clearance issues with the ground. Chris; =20 I have a fixed pitch 3-blade 66" dia, 80 pitch on my 20B; and get static = rpm of about 5400 with the 2.17:1 re-drive. Same specs on different props = will give different results, but it would suggest that you are not getting = near full pitch. Al =20 =20 ------=_NextPart_000_0006_01CA4FBE.B8EB2840 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Al,

 

I have the IVO Magnum = in flight adjustable 3 blade prop with 45 to 105 inch pitch = range.  I believe it is 68 inches long, but it MAY = be 66 inches.  I do not think I could go much longer as I would be = concerned about clearance issues with the ground.

Chris;

 

I have a fixed pitch 3-blade = 66” dia, 80 pitch on my 20B; and get static rpm of about 5400 with the 2.17:1 = re-drive. Same specs on different props will give different results, but it would = suggest that you are not getting near full pitch.

Al

 

 

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