X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from omta2.toronto.rmgopenwave.com ([4.59.182.100] verified) by logan.com (CommuniGate Pro SMTP 5.3c4) with ESMTP id 4033936 for flyrotary@lancaironline.net; Mon, 21 Dec 2009 14:09:15 -0500 Received-SPF: pass receiver=logan.com; client-ip=4.59.182.100; envelope-from=lacombr@nbnet.nb.ca Received: from torspm02.toronto.rmgopenwave.com ([142.167.90.11]) by tormtz02.toronto.rmgopenwave.com (InterMail vM.8.00.01.00 201-2244-105-20090324) with ESMTP id <20091221190841.VYGE16897.tormtz02.toronto.rmgopenwave.com@torspm02.toronto.rmgopenwave.com> for ; Mon, 21 Dec 2009 14:08:41 -0500 Received: from PCdeRita ([142.167.90.11]) by torspm02.toronto.rmgopenwave.com with SMTP id <20091221190841.GZNJ12080.torspm02.toronto.rmgopenwave.com@PCdeRita> for ; Mon, 21 Dec 2009 14:08:41 -0500 Message-ID: From: "Rino" To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Lapping Housings Date: Mon, 21 Dec 2009 15:08:18 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0094_01CA824F.6D511CA0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6002.18005 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18005 X-Opwv-CommTouchExtSvcRefID: str=0001.0A020203.4B2FC7B9.01E1,ss=1,fgs=0 This is a multi-part message in MIME format. ------=_NextPart_000_0094_01CA824F.6D511CA0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Kelly, I used Permatex No. 474G valve grinding compound. It does not tell what = grit it is. I noticed that the grit becomes very fine after about a = half hour of use. At first I added some grinding compound every half = hour. To finish I did not add any compound for about one hour, so only = the very fine grit is used for finishing. It seems to have worked. I = would say that it rotated for about 4 hours in all for two side = housings. Yes it is a soft wood plug inside the iron but next time I will use hard = wood or metal. By the time the job was finished the wooden plug was = very loose, ready to fall off. Rino Lacombe ----- Original Message -----=20 From: Kelly Troyer=20 To: Rotary motors in aircraft=20 Sent: Sunday, December 20, 2009 10:00 PM Subject: [FlyRotary] Lapping Housings Rino, Great photo..........I am getting ready to do same to my = housings..........Two questions come to my mind..........(1) What grit of lapping compound did you use = (and approx how much time per side) and (2) Is that a wooden plug the bearing is = riding in ?............. -- Kelly Troyer=20 "Dyke Delta"_13B ROTARY Engine=20 "RWS"_RD1C/EC2/EM2=20 "Mistral"_Backplate/Oil Manifold=20 -------------- Original message from ------=_NextPart_000_0094_01CA824F.6D511CA0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable =EF=BB=BF
Kelly,
 
I used Permatex No. 474G valve grinding = compound.  It does not tell what grit it is.  I noticed that = the grit=20 becomes very fine after about a half hour of use.  At first I added = some=20 grinding compound every half hour.  To finish I did not add any = compound=20 for about one hour, so only the very fine grit is used for = finishing.  It=20 seems to have worked.  I would say that it rotated for about 4 = hours in all=20 for two side housings.
 
Yes it is a soft wood plug inside the = iron but next=20 time I will use hard wood or metal.  By the time the job was = finished the=20 wooden plug was very loose, ready to fall off.
 
Rino Lacombe
 
----- Original Message -----
From:=20 Kelly = Troyer
Sent: Sunday, December 20, 2009 = 10:00=20 PM
Subject: [FlyRotary] Lapping=20 Housings

Rino,
    Great photo..........I am getting ready to do = same to=20 my housings..........Two questions
come to my mind..........(1) What grit of lapping compound did = you use=20 (and approx how
much time per side) and (2) Is that a wooden plug the bearing is = riding=20 in ?.............
--
Kelly Troyer
"Dyke = Delta"_13B=20 ROTARY Engine
"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil = Manifold=20
--------------=20 Original message from ------=_NextPart_000_0094_01CA824F.6D511CA0--