X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mx2.netapp.com ([216.240.18.37] verified) by logan.com (CommuniGate Pro SMTP 5.3.9) with ESMTPS id 4489396 for flyrotary@lancaironline.net; Fri, 01 Oct 2010 14:19:18 -0400 Received-SPF: softfail receiver=logan.com; client-ip=216.240.18.37; envelope-from=echristley@nc.rr.com X-IronPort-AV: E=Sophos;i="4.57,267,1283756400"; d="scan'208";a="461491701" Received: from smtp1.corp.netapp.com ([10.57.156.124]) by mx2-out.netapp.com with ESMTP; 01 Oct 2010 11:18:27 -0700 Received: from [10.62.16.204] (ernestc-laptop.hq.netapp.com [10.62.16.204]) by smtp1.corp.netapp.com (8.13.1/8.13.1/NTAP-1.6) with ESMTP id o91IIRaB001394 for ; Fri, 1 Oct 2010 11:18:27 -0700 (PDT) Message-ID: <4CA625ED.4070907@nc.rr.com> Date: Fri, 01 Oct 2010 14:18:21 -0400 From: Ernest Christley Reply-To: echristley@nc.rr.com User-Agent: Thunderbird 2.0.0.24 (X11/20100317) MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: simple dyno References: In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: quoted-printable Andrew Martin wrote: > > 5=94x5=94 is a bit on the big side, it would take over 500hp to turn it= at=20 > 2000rpm. > I=92ve just made up a 54=94long by 3.6=94 square laminated beam, cost a= ll of=20 > $30, calculation shows it should absorb 190hp at 2450 prop rpm, only=20 > going to be used for a short while on initial startup so no need to go = > overboard. Pictures?