X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 1 [X] Return-Path: Received: from fed1rmmtao08.cox.net ([68.230.241.31] verified) by logan.com (CommuniGate Pro SMTP 5.1.3) with ESMTP id 1623016 for flyrotary@lancaironline.net; Thu, 30 Nov 2006 02:02:13 -0500 Received-SPF: none receiver=logan.com; client-ip=68.230.241.31; envelope-from=alventures@cox.net Received: from fed1rmimpo02.cox.net ([70.169.32.72]) by fed1rmmtao08.cox.net (InterMail vM.6.01.06.03 201-2131-130-104-20060516) with ESMTP id <20061130070150.HJF18207.fed1rmmtao08.cox.net@fed1rmimpo02.cox.net> for ; Thu, 30 Nov 2006 02:01:50 -0500 Received: from BigAl ([72.192.132.90]) by fed1rmimpo02.cox.net with bizsmtp id sv1z1V00t1xAn3c0000000; Thu, 30 Nov 2006 02:01:59 -0500 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: Prop windmilling Date: Wed, 29 Nov 2006 23:01:57 -0800 Message-ID: <001001c7144d$6d202910$6400a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0011_01C7140A.5EFCE910" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2962 Importance: Normal In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_0011_01C7140A.5EFCE910 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable =20 2.176:1 will definitely not windmill at pattern or glide speed for an = RV-3 (about 100 mph). Might make a 1/3 turn and stop again if you point it = down a bit. And that was with an engine that had rather low compression. Tested several times over Clearwater Airpark. Finn Finn; What prop diameter and pitch? Al =20 ------=_NextPart_000_0011_01C7140A.5EFCE910 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

 

2.176:1 will = definitely not windmill at pattern or glide speed for an RV-3 (about 100 mph). = Might make a 1/3 turn and stop again if you point it down a bit. And that was with = an engine that had rather low compression.
Tested several times over Clearwater Airpark.

Finn

Finn;

What prop diameter and = pitch?

Al

 

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