X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from ms-smtp-05.southeast.rr.com ([24.25.9.104] verified) by logan.com (CommuniGate Pro SMTP 5.1.10) with ESMTP id 2131549 for flyrotary@lancaironline.net; Thu, 21 Jun 2007 09:53:36 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.104; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-103-061.carolina.res.rr.com [24.74.103.61]) by ms-smtp-05.southeast.rr.com (8.13.6/8.13.6) with SMTP id l5LDqbeB005348 for ; Thu, 21 Jun 2007 09:52:37 -0400 (EDT) Message-ID: <001c01c7b40b$7a2edd00$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: PP construction methods Date: Thu, 21 Jun 2007 09:52:58 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0019_01C7B3E9.F2CEA7D0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3028 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0019_01C7B3E9.F2CEA7D0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Thanks for the info, Jerry. Who knows with all this interest in a PP - perhaps a running 2 rotor = engine with PP will show up on the list - we all know Richard has a one = rotor PP running. Ed ----- Original Message -----=20 From: Jerry Hey=20 To: Rotary motors in aircraft=20 Sent: Thursday, June 21, 2007 9:11 AM Subject: [FlyRotary] Re: PP construction methods Thanks, I made two of them about two years ago. Now that I am = building a single rotor, I have the luxury of having a back up housing. = A 1.5" i.d. port is not so small when you look at it in real life. Its = size guarantees an easy life for the tip seals. Because of the thick = wall I was able to put in several deep grooves before pouring in the = epoxy. A word on epoxy. I totally disagree with using JB weld. There = are epoxies designed for this type application. One is Duralco 4525. = It is intended for high temp (500=BA), high performance bonding. = Expensive but worth the piece of mind. In application, it is extremely = thin and very slow curing and thus will flow completely to fill the = cavity around the insert. Mine took an entire day to set up. Google = Duralco 4525 if interested. Jerry =20 On Jun 21, 2007, at 8:39 AM, Ed Anderson wrote: Nice looking P port, Jerry. Ed ----- Original Message ----- From: Jerry Hey To: Rotary motors in aircraft Sent: Thursday, June 21, 2007 8:09 AM Subject: [FlyRotary] Re: PP construction methods On Jun 21, 2007, at 7:28 AM, Lehanover@aol.com wrote: In a message dated 6/21/2007 3:12:48 A.M. Eastern Daylight Time, = lendich@optusnet.com.au writes: George, ??? Let me get this straight.........Steel tube TIG welded to = steel insert.......Then aluminum insert with O-ring (s) to seal to the steel tube.......? A = sketch would be worth a thousand words for the engineering challenged........ -- Kelly Troyer=20 I would advise against welding anything to the liner. The = housings are actually very flexible, and will soon warp in favor of the weld beads. A thick walled = aluminum tube in a very light press fit through the inner wall.?Same = through the outer wall, but not tight through the outer wall is also = fine. The inner wall needs good support to prevent chrome cracking when = you torque up the stack. ? Lynn E. Hanover? Lynn,? similar to this?? My inserts(throttle bodies).? They are = 2.25 o.d. and 1.5 i.d.? 6061 T6 ? ?Jerry <001c01c7b401$31f0a550$2402a8c0> ------------------------------------------------------------------------ See what's free at AOL.com. ------=_NextPart_000_0019_01C7B3E9.F2CEA7D0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Thanks for the info, Jerry.
 
Who knows with all this interest in a PP - = perhaps a=20 running 2 rotor engine with PP will show up on the list - we all know = Richard=20 has a one rotor PP running.
 
Ed
----- Original Message -----
From:=20 Jerry=20 Hey
Sent: Thursday, June 21, 2007 = 9:11=20 AM
Subject: [FlyRotary] Re: PP = construction=20 methods

Thanks,  I made two of them about two years = ago.  Now=20 that I am building a single rotor, I have the luxury of having a back = up=20 housing.   A 1.5" i.d. port is not so small when you look at = it in=20 real life.  Its size guarantees an easy life for the tip = seals. =20 Because of the thick wall I was able to put in several deep grooves = before=20 pouring in the epoxy.   A word on epoxy.  I totally = disagree=20 with using JB weld.  There are epoxies designed for this type=20 application.  One is Duralco 4525.   It is intended for = high=20 temp (500=BA), high performance bonding.  Expensive but worth the = piece of=20 mind.  In application, it is extremely thin and very slow curing = and thus=20 will flow completely to fill the cavity around the insert. =20  Mine took an entire day to set up.   Google Duralco = 4525 if=20 interested.      Jerry  




On Jun 21, 2007, at 8:39 AM, Ed Anderson wrote:
Nice looking P port, = Jerry.
 
Ed
----- Original = Message=20 -----
From:=20 Jerry=20 Hey
Sent:=20 Thursday, June 21, 2007 8:09 AM
Subject:=20 [FlyRotary] Re: PP construction methods


On Jun 21, 2007, at 7:28 AM, Lehanover@aol.com wrote:
In a message dated 6/21/2007 = 3:12:48 A.M.=20 Eastern Daylight Time, lendich@optusnet.com.au = writes:
George,
???=20 Let me get this straight.........Steel tube TIG welded to = steel=20 insert.......Then aluminum
insert with = O-ring (s) to=20 seal to the steel tube.......? A sketch would be worth a=20 thousand
words for the = engineering=20 challenged........
--Kelly Troyer =
I would advise against welding = anything to=20 the liner. The housings are actually very flexible,
and will soon warp in favor of the = weld=20 beads. A thick walled aluminum tube in a very light press fit = through=20 the inner wall.?Same through the outer wall, but not tight = through the=20 outer wall is also fine. The inner wall needs good support to = prevent=20 chrome cracking when you torque up the stack.
?
Lynn E.=20 Hanover?


Lynn,? similar to = this?? My=20 inserts(throttle bodies).? They are 2.25 o.d. and 1.5 i.d.? 6061 = T6 ?=20 ?Jerry

=
<001c01c7b401$31f0a550$2402a8c0>



See what's free at = AOL.com.


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