X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-pv0-f180.google.com ([74.125.83.180] verified) by logan.com (CommuniGate Pro SMTP 5.3.4) with ESMTP id 4179408 for flyrotary@lancaironline.net; Fri, 26 Mar 2010 04:17:23 -0400 Received-SPF: pass receiver=logan.com; client-ip=74.125.83.180; envelope-from=bartrim@gmail.com Received: by pvc22 with SMTP id 22so4316043pvc.25 for ; Fri, 26 Mar 2010 01:16:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:subject:from:to:in-reply-to :references:content-type:date:message-id:mime-version:x-mailer; bh=9Itjg1kZ0j/GQMX92H2b0Bov6wtcD2u9Ye6iLesPuJI=; b=xbbC+A5XbedVL0cOY7UpF1iwArwanch8ejI7stY+JHV7pTu5xp315bRqCnhZchIHiL rV5sc0SRze/tvN+Thub8wHxbrQLqt9ohTX9Q+WAviwPKLQjMcsGjgMHdyHwweUcQCvy7 84vCIIUIl4BewMEJyHJ6v67hb/2OBTlZa7ZaE= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=subject:from:to:in-reply-to:references:content-type:date:message-id :mime-version:x-mailer; b=Tlrr4TomncqNf5skq0j70QqmdHPEhFfHjIrIvxdCuJn92o03PpeFF0pQEUStgdwr1c G5xRxkOi2FPMzzwkKN9gpVF2Q33fzUq9dPfV6lvnMhiw8/t6K+WIYiycFSGmR9yq+VET ANTKLP2g3S5Euy360hpUIlV1B8GgUFg+dHhDg= Received: by 10.115.38.6 with SMTP id q6mr432078waj.207.1269591407145; Fri, 26 Mar 2010 01:16:47 -0700 (PDT) Return-Path: Received: from [192.168.1.64] (d154-20-240-118.bchsia.telus.net [154.20.240.118]) by mx.google.com with ESMTPS id 22sm534557pzk.13.2010.03.26.01.16.45 (version=SSLv3 cipher=RC4-MD5); Fri, 26 Mar 2010 01:16:45 -0700 (PDT) Subject: Re: [FlyRotary] Re: Adaptor plate rivets From: Todd Bartrim To: Rotary motors in aircraft In-Reply-To: References: Content-Type: multipart/alternative; boundary="=-E9iVIDJyxx6fuSmliors" Date: Fri, 26 Mar 2010 01:16:43 -0700 Message-Id: <1269591403.21039.8.camel@Endurance> Mime-Version: 1.0 X-Mailer: Evolution 2.22.3.1 --=-E9iVIDJyxx6fuSmliors Content-Type: text/plain Content-Transfer-Encoding: 7bit Early drives like Tracy, Ed, Bill Eslick(? havent heard), Todd Bartrim (havent heard), Chuck Dunlap (havent heard), Tommy James (havent heard) and I (so far) don't seem to have a problem while you and Mark who have slightly later versions are having loosening. (Have we heard from John Slade or Steve Brooks and I missed it?) Any other high-time re-drives that I left out?) - What about Tom Parks? (turbo 20B with Ross Drive). It's possible that power is the main issue (average torque), but it seems to me that peak torque and torque variation amplitude are what are going to matter most. You and Mark are going to have lower peak torque than those of us with turbo engines, and with 20B's you are are going to have lower torque amplitude than even those with n.a. 13B's. Only your average torque is higher. Seems strange... that is why I am wondering about some sort of change to the later mod els of the gear drive. Tracy? -- David Leonard Hi Dave; When I disassembled my plate to install the PM generator rotor cup, I did notice a couple of minor smoke trails from a few of the rivets, However when I drilled them out for disassembly, none of them spun with the drill bit, indicating that they were still tight. Since this is something that I've modified from the original design, I'll certainly pay close attention to it now. Todd --=-E9iVIDJyxx6fuSmliors Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 7bit

Early drives like Tracy, Ed, Bill Eslick(? havent heard), Todd Bartrim (havent heard), Chuck Dunlap (havent heard), Tommy James (havent heard) and I (so far) don't seem to have a problem while you and Mark who have slightly later versions are having loosening. (Have we heard from John Slade or Steve Brooks and I missed it?) Any other high-time re-drives that I left out?) - What about Tom Parks? (turbo 20B with Ross Drive). It's possible that power is the main issue (average torque), but it seems to me that peak torque and torque variation amplitude are what are going to matter most. You and Mark are going to have lower peak torque than those of us with turbo engines, and with 20B's you are are going to have lower torque amplitude than even those with n.a. 13B's. Only your average torque is higher. Seems strange... that is why I am wondering about some sort of change to the later mod
els of the gear drive. Tracy?
--
David Leonard

Hi Dave;
When I disassembled my plate to install the PM generator rotor cup, I did notice a couple of minor smoke trails from a few of the rivets, However when I drilled them out for disassembly, none of them spun with the drill bit, indicating that they were still tight. Since this is something that I've modified from the original design, I'll certainly pay close attention to it now.
Todd

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