Return-Path: Received: from ms-smtp-02.southeast.rr.com ([24.93.67.83] verified) by logan.com (CommuniGate Pro SMTP 4.1.3) with ESMTP id 2582052 for flyrotary@lancaironline.net; Tue, 16 Sep 2003 20:49:11 -0400 Received: from o7y6b5 (clt78-020.carolina.rr.com [24.93.78.20]) by ms-smtp-02.southeast.rr.com (8.12.5/8.12.2) with SMTP id h8H0j9pN029647 for ; Tue, 16 Sep 2003 20:45:09 -0400 (EDT) Message-ID: <006201c37cb5$316c1ec0$1702a8c0@WorkGroup> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Internal gearing ... Date: Tue, 16 Sep 2003 20:46:55 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 ----- Original Message ----- From: "Canyon" To: "Rotary motors in aircraft" Sent: Tuesday, September 16, 2003 7:09 PM Subject: [FlyRotary] Re: Internal gearing ... > Ed Anderson wrote: > >So I would say its all three of the factors you mentioned{:>) > > Well, heck -- at least I got part of it right then. :-) > > >Hope that helps > > It does and thanks. I need to digest this a bit though. I guess I > need to go look at one of those fancy animated engine sites > somewhere. It seems to me the crank journal angular travel must then > be 1/3 the angular travel of the shaft while the shaft side gear is > rigid with the shaft and tracking a rotor internal tooth gear. Hmm... > hurts my head. > > Steve > Err, not certain I followed all of that. The shaft side gear is rigid with the block/housing - not the the eccentric shaft (if I understood you statement correctly.) The moving rotor side part of the gear "Pushes" against the fixed (bolted to the front and rear iron side housings) gear due to the power stroke. This causes the rotor to "Push-move" away taking its eccentric shaft journal with it on the journey around the race track. Ed