X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imo-m26.mx.aol.com ([64.12.137.7] verified) by logan.com (CommuniGate Pro SMTP 5.1.10) with ESMTP id 2121516 for flyrotary@lancaironline.net; Wed, 20 Jun 2007 14:39:54 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.137.7; envelope-from=BMears9413@aol.com Received: from BMears9413@aol.com by imo-m26.mx.aol.com (mail_out_v38_r9.2.) id q.d47.c07d26d (52840) for ; Wed, 20 Jun 2007 14:37:52 -0400 (EDT) Received: from webmail-db20 (webmail-db20.webmail.aol.com [205.188.105.85]) by cia-m02.mx.aol.com (v117.7) with ESMTP id MAILCIAM028-ce684679740012c; Wed, 20 Jun 2007 14:37:52 -0400 References: To: flyrotary@lancaironline.net Subject: Re: [FlyRotary] Re: PP construction methods Date: Wed, 20 Jun 2007 14:37:52 -0400 In-Reply-To: X-MB-Message-Source: WebUI MIME-Version: 1.0 From: bmears9413@aol.com X-MB-Message-Type: User Content-Type: multipart/alternative; boundary="--------MB_8C981813E9703E8_1C88_22693_webmail-db20.sysops.aol.com" X-Mailer: AOL WebMail 27618 Received: from 65.182.71.8 by webmail-db20.sysops.aol.com (205.188.105.85) with HTTP (WebMailUI); Wed, 20 Jun 2007 14:37:52 -0400 Message-Id: <8C981813E9703E8-1C88-121F4@webmail-db20.sysops.aol.com> X-AOL-IP: 205.188.105.85 X-Spam-Flag: NO ----------MB_8C981813E9703E8_1C88_22693_webmail-db20.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" I built P Ports by just drilling a hole through the housing, squeeezingin a=20= diesel injection=C2=A0 tube, and epoxy fill the entire water chamber it is d= rilled through. ran that little motor on the street for years and it never l= eaked. Bob Mears Supermarine spitfire -----Original Message----- From: Richard Sohn To: Rotary motors in aircraft Sent: Wed, 20 Jun 2007 8:54 am Subject: [FlyRotary] Re: PP construction methods =C2=A0 ----- Original Message -----=20 From: Russell Duffy=20 To: Rotary motors in aircraft=20 Sent: Wednesday, June 20, 2007 7:19 AM Subject: [FlyRotary] PP construction methods Greetings, =C2=A0 One of the things that's always bothered me about making a PP housing is lea= kage.=C2=A0 I've heard very experienced folks say that eventually, any PP ho= using you make will leak, and it's easy for me to imagine=C2=A0that happenin= g.=C2=A0 I don't think I've heard the same thing about factory housings thou= gh.=C2=A0 How are the ports installed in the factory PP housing?=C2=A0=20 =C2=A0 The other problem with a conversion is the side ports.=C2=A0 I know people f= ill these with their favorite epoxy, but I'd worry about that coming loose,=20= and getting into the rotor.=C2=A0 How much=C2=A0would it hurt the PP operati= on if you just sealed the ports on the outside of the side housings with a p= late where the intake would have been?=C2=A0=C2=A0 =C2=A0 Cheers, Rusty =C2=A0 Rusty, =C2=A0 I have run my PP on the single rotor for about 25hrs throug all sorts of hea= t cycles and never had a problem with leaking. Keep in mind that my insert i= s held in place by a flange with two bolts, so the JB only seals, it does no= t do the holding.=20 I certainly would never want to depend on JB for holding the insert in place= . =C2=A0 On your question with the open side port, one of the side ports was open dur= ing the same test period, closed on the outside. Never observed any negative= effect, however, it never ran max RPM. The highest was 5000RPM. I have clos= ed that port now for the next test runs. =C2=A0 FWIW. =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 No virus found in this incoming message. Checked by AVG Free Edition.=20 Version: 7.5.472 / Virus Database: 269.9.1/854 - Release Date: 6/19/2007 1:1= 2 PM ________________________________________________________________________ AOL now offers free email to everyone. Find out more about what's free from= AOL at AOL.com. ----------MB_8C981813E9703E8_1C88_22693_webmail-db20.sysops.aol.com Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="utf-8"
I built P Ports by just drilling a hole through the housing, squeeezing= in a diesel injection=C2=A0 tube, and epoxy fill the entire water chamber it= is drilled through. ran that little motor on the street for years and it ne= ver leaked.
=C2=A0
Bob Mears
Supermarine spitfire


-----Original Message-----
From: Richard Sohn
To: Rotary motors in aircraft
Sent: Wed, 20 Jun 2007 8:54 am
Subject: [FlyRotary] Re: PP construction methods

=C2=A0
----- Original Message -----
Sent: Wednesday, June 20, 2007 7:19 A= M
Subject: [FlyRotary] PP construction=20= methods

Greetings,
=C2= =A0
One of the things t= hat's always bothered me about making a PP housing is leakage.=C2=A0 I've he= ard very experienced folks say that eventually, any PP housing you make will= leak, and it's easy for me to imagine=C2=A0that happening.=C2=A0 I don't th= ink I've heard the same thing about factory housings though.=C2=A0 How are the ports i= nstalled in the factory PP housing?=C2=A0
=C2= =A0
The other problem w= ith a conversion is the side ports.=C2=A0 I know people fill these with thei= r favorite epoxy, but I'd worry about that coming loose, and getting into th= e rotor.=C2=A0 How much=C2=A0would it hurt the PP operation if you just seal= ed the ports on the outside of the side housings with a plate where the inta= ke would have been?=C2=A0=C2=A0
=C2=A0
Cheers,
Rusty=
=C2=A0
Rusty,
=C2=A0
I have run my PP on the single rotor for about 25hrs= throug all sorts of heat cycles and never had a problem with leaking. Keep=20= in mind that my insert is held in place by a flange with two bolts, so the J= B only seals, it does not do the holding.
I certainly would never want to depend on JB for hol= ding the insert in place.
=C2=A0
On your question with the open side port, one of the= side ports was open during the same test period, closed on the outside. Nev= er observed any negative effect, however, it never ran max RPM. The highest=20= was 5000RPM. I have closed that port now for the next test runs.
=C2=A0
FWIW.
=C2=A0
=C2=A0
=C2=A0
=C2=A0
=C2=A0
No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.5.472 / Virus Database: 269.9.1/854 - Release Date: 6/19/2007 1:1= 2 PM
AOL now offers free email to everyone. Find out more about what's free from= AOL at AOL.com.
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