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 5.4.4) with ESMTPS id 5381948 for flyrotary@lancaironline.net; Fri, 03 Feb 2012 14:36:34 -0500 Received-SPF: softfail receiver=logan.com; client-ip=216.240.18.37; envelope-from=echristley@nc.rr.com X-IronPort-AV: E=Sophos;i="4.73,352,1325491200"; d="scan'208";a="622243173" Received: from smtp2.corp.netapp.com ([10.57.159.114]) by mx2-out.netapp.com with ESMTP; 03 Feb 2012 11:35:59 -0800 Received: from [10.62.16.167] (ernestc-laptop.hq.netapp.com [10.62.16.167]) by smtp2.corp.netapp.com (8.13.1/8.13.1/NTAP-1.6) with ESMTP id q13JZwHm019003 for ; Fri, 3 Feb 2012 11:35:59 -0800 (PST) Message-ID: <4F2C367C.1020007@nc.rr.com> Date: Fri, 03 Feb 2012 14:33:16 -0500 From: Ernest Christley Reply-To: echristley@nc.rr.com User-Agent: Thunderbird 2.0.0.24 (X11/20100623) MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: New Flywheel for RD-1x redrives References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Tracy wrote: > Don't know the dimensions of the generator in question but one of the > design goals was to change as little as possible, so the distance > between engine and gearbox was unchanged. > Off the top of my head, the rotor is 1.25" deep, and would need a 6" dia flat on the engine side of the gap, centered on the shaft. The stator fits completely inside the rotor, so it only needs 1/8" to allow for routing the wires out. If the space has been expanded even a small amount, it should allow for a relatively easy addition of a compact 38A generator, eliminating belts and pulleys. I only have a microscopic amount of time on mine, but it has been working so far.