Return-Path: Received: from imf17aec.mail.bellsouth.net ([205.152.59.65] verified) by logan.com (CommuniGate Pro SMTP 4.2b5) with ESMTP id 163902 for flyrotary@lancaironline.net; Tue, 15 Jun 2004 17:26:46 -0400 Received: from bellsouth.net ([209.214.146.202]) by imf17aec.mail.bellsouth.net (InterMail vM.5.01.06.08 201-253-122-130-108-20031117) with ESMTP id <20040615212613.RLRM28123.imf17aec.mail.bellsouth.net@bellsouth.net> for ; Tue, 15 Jun 2004 17:26:13 -0400 Message-ID: <40CF696E.2030903@bellsouth.net> Date: Tue, 15 Jun 2004 16:26:06 -0500 From: Charlie England User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] alternator redundancy References: In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit http://www.greatplainsas.com/scdiehl.html Is a link to one of the VW engine converters. Scroll down below the accessory case (another interesting idea...). They've offered a crank mounted alternator for years designed like the motorcycle mags, & apparently it's been adapted to other engines. 20 amps, so not enough to power the whole plane but I like the idea of running the engine off a separate source & using ship's power as backup. I have no idea if it can be adapted to the rotary but the design is clean & light (required on little VW's). Any of you engineer-types care to hazard a guess on whether the ignition distributor shaft & gears would be stout enough to handle the ~1/4 HP load of this device? With a crank angle sensor, that might be a potential drive point. Price is around $170. Charlie KENPOWELL@comcast.net wrote: >Hi Mike, >I've been kicking this around for quite some time (I was a motorcycle mechanic while in college). The idea was to use a motorcycle or snowmobile magneto. The problem is that there just isn't much room on the between the flywheel and the redrive to mount the magneto components. I just recently received my 2.85 redrive from Tracy and hope to take another look at this problem this fall. There is also a possibility of mounting the magneto components on the accesory end of the engine. More to follow in the coming months; I hope someone beats me to finding a solution. > >Ken Powell > > > > >>Dear All, >> >>There was a thread a while back in which one of our colleagues suggested the >>possibility for a second alternator perhaps mounted on the PSRU?? >> >>Could be a lighter option for redundancy than two batteries >> >>Did this go anywhere? >> >>Mike >>