Return-Path: <13brv3@bellsouth.net> Received: from imf22aec.mail.bellsouth.net ([205.152.59.70] verified) by logan.com (CommuniGate Pro SMTP 4.2.5) with ESMTP id 593577 for flyrotary@lancaironline.net; Thu, 06 Jan 2005 13:40:27 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.70; envelope-from=13brv3@bellsouth.net Received: from rd ([65.6.194.9]) by imf22aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with ESMTP id <20050106183952.IQPU2069.imf22aec.mail.bellsouth.net@rd> for ; Thu, 6 Jan 2005 13:39:52 -0500 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: P-Port stuff- was Re: RV-3 engine rebuild Date: Thu, 6 Jan 2005 12:40:06 -0600 Message-ID: <00a701c4f41f$2462e140$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00A8_01C4F3EC.D9C87140" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_00A8_01C4F3EC.D9C87140 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Check out Paul Yaw's web site at www.yawpower.com and in the pictures section he walks through a very nice Pport construction. =20 Thanks for the pointer Lynn. I've been to Paul's site, but never sifted through the pics section. His article on flow testing shows some info = on the PP as well. The entire void around the tube is filled with Devcon Plastic alumunum. = All the way to the mating surface on both sides. File and sand dead smooth. = This makes this area very stiff. No water can get through this area once you = have finished. There is none in the factory Pport housing either. No water = =3D no water leaks.=20 Wow, I didn't know that. I had thought about filling the whole cavity around the PP, but figured that was too silly to mention. So that = should take care of the water leaks I guess. =20 Did I also read that the factory PP housing doesn't use one of the = through bolts? I'm guessing the port gets in the way if it's big enough. =20 The side ports in the irons are filled with Devcon Plastic Steel. This makes me nervous, but I know that Bruce shows contouring the 6 port high speed port with some sort of epoxy. Still makes me nervous. I = might not mind doing it for a temporary fix, while waiting for the Racing Bead aluminum housings, which are set up for PP by default. =20 The rotor housings are far more flexible than they should be. I would = not weld anything to them. Understood. It's really best that I keep the TIG welder away from = anything expensive :-) Thanks also to Ken for pointing out the filling of the cavity around the = PP. Rusty (still not doing this for the RV-3) ------=_NextPart_000_00A8_01C4F3EC.D9C87140 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

Check out Paul Yaw's web site at www.yawpower.com and = in the=20 pictures section
he walks through a very nice Pport = construction.

 
Thanks = for the pointer=20 Lynn.  I've been to Paul's site, but never sifted through the pics=20 section.  His article on flow testing shows some info on the PP as=20 well.


The entire void around the tube is filled with Devcon Plastic = alumunum.=20 All
the way to the mating surface on both sides. File and sand dead = smooth.=20 This
makes this area very stiff. No water can get through this area = once you=20 have
finished. There is none in the factory Pport housing either. No = water =3D=20 no water
leaks.

Wow, I didn't know = that.  I had=20 thought about filling the whole cavity around the PP, but figured that = was too=20 silly to mention.  So that should take care of the water leaks I=20 guess.  

Did I also read that the = factory PP=20 housing doesn't use one of the through bolts?  I'm guessing the=20 port gets in the way if it's big enough.    =

The side ports in the irons are filled with Devcon Plastic Steel.

This makes me nervous, = but I know that=20 Bruce shows contouring the 6 port high speed port with some sort of = epoxy. =20 Still makes me nervous.  I might not mind doing it for a temporary = fix,=20 while waiting for the Racing Bead aluminum housings, which are set up = for PP by=20 default. 

The rotor housings are far more flexible = than they=20 should be. I would not
weld anything to them.

Understood.  It's = really best that=20 I keep the TIG welder away from anything expensive :-)

Thanks also to Ken for = pointing out the=20 filling of the cavity around the PP. 

Rusty (still not doing = this for the=20 RV-3)



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