X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fmailhost01.isp.att.net ([207.115.11.51] verified) by logan.com (CommuniGate Pro SMTP 5.3c3) with ESMTP id 3997853 for flyrotary@lancaironline.net; Tue, 01 Dec 2009 14:25:30 -0500 Received-SPF: error receiver=logan.com; client-ip=207.115.11.51; envelope-from=Panzera@experimental-aviation.com DKIM-Signature: v=1; q=dns/txt; d=pacbell.net; s=dkim01; i=panzera@pacbell.net; a=rsa-sha256; c=relaxed/relaxed; t=1259695529; h=In-Reply-To:Content-Type:MIME-Version:Message-ID: Date:Subject:To:From; bh=GVsYzLdWKaGoqiJUhLTD5Y+h3BkS6bz3+mSTVGrGB7 Q=; b=p4AmVhhlzsv7ZB128yMkP2c25M2Pw+R5IWjXV5PRRgRwQzz117y8gbZYqnbi/ tPA00HFmmVsjx7Qro1xJVNr5A== Received: from cdibmpat2 (adsl-76-250-177-126.dsl.frs2ca.sbcglobal.net[76.250.177.126]) by isp.att.net (frfwmhc01) with SMTP id <20091201192451H01002fdace>; Tue, 1 Dec 2009 19:24:51 +0000 X-Originating-IP: [76.250.177.126] From: "Patrick Panzera" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Next generation re-drive Date: Tue, 1 Dec 2009 11:24:48 -0800 Message-ID: <004e01ca72bb$f29f08c0$1801a8c0@cd.constructiondesigns.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_004F_01CA7278.E47BC8C0" X-Mailer: Microsoft Office Outlook 11 In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3138 Thread-Index: AcpyuoHCAcBG1B61Sz6gaa5XPFAz/AAARjxg This is a multi-part message in MIME format. ------=_NextPart_000_004F_01CA7278.E47BC8C0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit and if you get a prop strike the magnetic gears spin free so you wind up replacing just the prop instead of the prop, the PSRU and some expensive engine parts. I'm not so sure about that. If the magnetic coupling is strong enough to transmit 200-300 HP from the engine to the prop, an abrupt stoppage of the prop will get transferred to the crank. Pat ------=_NextPart_000_004F_01CA7278.E47BC8C0 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

and if you get a prop = strike the magnetic gears spin free so you wind up replacing just the prop instead = of the prop, the PSRU and some expensive engine parts. =

I’m not so sure about = that.

If the magnetic coupling is strong = enough to transmit 200-300 HP from the engine to the prop, =

an abrupt stoppage of the prop will = get transferred to the crank.

Pat

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