Return-Path: Received: from sccrmhc13.comcast.net ([204.127.202.64] verified) by logan.com (CommuniGate Pro SMTP 4.2.5) with ESMTP id 593301 for flyrotary@lancaironline.net; Thu, 06 Jan 2005 10:17:35 -0500 Received-SPF: none receiver=logan.com; client-ip=204.127.202.64; envelope-from=kenpowell@comcast.net Received: from 204.127.205.142 ([204.127.205.142]) by comcast.net (sccrmhc13) with SMTP id <20050106151652016002h97ie>; Thu, 6 Jan 2005 15:16:52 +0000 Received: from [166.102.160.133] by 204.127.205.142; Thu, 06 Jan 2005 15:16:52 +0000 From: kenpowell@comcast.net To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: P-Port stuff- was Re: RV-3 engine rebuild Date: Thu, 06 Jan 2005 15:16:52 +0000 Message-Id: <010620051516.28218.41DD5662000C4B6600006E3A220074818404040A99019F020A05@comcast.net> X-Mailer: AT&T Message Center Version 1 (Dec 17 2004) X-Authenticated-Sender: a2VucG93ZWxsQGNvbWNhc3QubmV0 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="NextPart_Webmail_9m3u9jl4l_28218_1105024612_0" --NextPart_Webmail_9m3u9jl4l_28218_1105024612_0 Content-Type: text/plain Content-Transfer-Encoding: 8bit Rusty, no need to 'weld' the inserts into the housings. Since this is the cold side of the engine the procedure is to bore the holes, insert the pport housings, then fill the cooling passages around the insert with epoxy. Jerry has the details on the epoxy he used. Lots of stuff will work though. Ken Powell Bryant, Arkansas -------------- Original message -------------- I see the exhaust closing left stock at around 48 ATDC. Then open the intake later than stock, to eliminate as much overlap as possible. The a way late closing point for the intake. Lynn E. Hanover This all makes sense, and certainly sounds reasonable. Thanks for being willing to sneak out in the workshop, when I "know" you'd rather be working on house stuff :-) As for the actual construction, aren't most of these PP inlets just epoxied in place? It just seems hard to believe that it won't leak water at some point if you do that. Is the rotor housing alloy weldable? Can the port be TIG welded inside and out, rather than epoxied? Should have the RV-3 engine home this weekend, but probably not apart until sometime next week. Thanks, Rusty --NextPart_Webmail_9m3u9jl4l_28218_1105024612_0 Content-Type: text/html Content-Transfer-Encoding: 8bit

Rusty, no need to 'weld' the inserts into the housings. Since this is the cold side of the engine the procedure is to bore the holes, insert the pport housings, then fill the cooling passages around the insert with epoxy. Jerry has the details on the epoxy he used. Lots of stuff will work though.

Ken Powell
Bryant, Arkansas

-------------- Original message --------------

I see the exhaust closing left stock at around 48 ATDC.

Then open the intake later than stock, to eliminate as much overlap as
possible. The a way late closing point for the intake.

Lynn E. Hanover

This all makes sense, and certainly sounds reasonable. Thanks for being willing to sneak out in the workshop, when I "know" you'd rather be working on house stuff :-)

As for the actual construction, aren't most of these PP inlets just epoxied in place? It just seems hard to believe that it won't leak water at some point if you do that. Is the rotor housing alloy weldable? Can the port be TIG welded inside and out, rather than epoxied?

Should have the RV-3 engine home this weekend, but probably not apart until sometime next week.

Thanks,

Rusty

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