Return-Path: Sender: (Marvin Kaye) To: flyrotary@lancaironline.net Date: Mon, 12 Jan 2004 09:54:17 -0500 Message-ID: X-Original-Return-Path: Received: from pintail.mail.pas.earthlink.net ([207.217.120.122] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 2928769 for flyrotary@lancaironline.net; Mon, 12 Jan 2004 07:48:17 -0500 Received: from user-2injp06.dialup.mindspring.com ([165.121.228.6] helo=Carol) by pintail.mail.pas.earthlink.net with smtp (Exim 3.33 #1) id 1Ag1UN-0004Vj-00 for flyrotary@lancaironline.net; Mon, 12 Jan 2004 04:48:16 -0800 X-Original-Message-ID: <005001c3d90a$541f8cc0$0000a398@Carol> From: "sqpilot@earthlink" X-Original-To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Success X-Original-Date: Mon, 12 Jan 2004 06:48:06 -0600 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_004D_01C3D8D8.08BF34B0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2720.3000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2727.1300 This is a multi-part message in MIME format. ------=_NextPart_000_004D_01C3D8D8.08BF34B0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Hi, Finn....By the time I drilled and tapped the hole for 1/2 NPT, the = remaining wall would be so thin, I was afraid it would break during the = tapping operation. The housing is cast iron, and a pipe tap is tapered, = so it tries to expand the hole while tapping. Not a good situation when = you have thin walls, expecially if those thin walls are cast iron. Take = care. Paul Conner ----- Original Message -----=20 From: Finn Lassen=20 To: Rotary motors in aircraft=20 Sent: Sunday, January 11, 2004 11:11 PM Subject: [FlyRotary] Re: Success I curious as to why you didn't simply thread the housing with 1/2" NPT = and used the fitting unaltered. Finn sqpilot@earthlink wrote: The second item I had success with was the 5/8" heater nipple = that is a press fit into the engine, underneath the oil filter. Mine = was missing from my engine. I tried to find a new one, with no success. = Finally, Mazdatrix sent a used one, but when I put a micrometer to it, = it was considerably out of round (probably caused during removal from = the casting).=20 I found at our local CarQuest auto parts store, a steel 5/8" = hose barb to a 1/2" NPT male fitting. I just put it in a lathe, and = turned the 1/2" NPT threaded area down to 17 mm, or .160 inches. In the = picture, you will see the longer original piece, as well as the new, = slightly shorter nipple. ------=_NextPart_000_004D_01C3D8D8.08BF34B0 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable
Hi, Finn....By the time I drilled and = tapped the=20 hole for 1/2 NPT, the remaining wall would be so thin, I was afraid it = would=20 break during the tapping operation.  The housing is cast iron, and = a pipe=20 tap is tapered, so it tries to expand the hole while tapping. Not a good = situation when you have thin walls, expecially if those thin walls are = cast=20 iron.  Take care. Paul Conner
----- Original Message -----
From:=20 Finn=20 Lassen
Sent: Sunday, January 11, 2004 = 11:11=20 PM
Subject: [FlyRotary] Re: = Success

I curious as to why you didn't simply thread the = housing with=20 1/2" NPT and used the fitting unaltered.

Finn

sqpilot@earthlink wrote:
     The second = item I had=20 success with was the 5/8" heater nipple that is a press fit into the = engine,=20 underneath the oil filter.  Mine was missing from my engine. I = tried to=20 find a new one, with no success. Finally, Mazdatrix sent a used one, = but=20 when I put a micrometer to it, it was considerably out of round = (probably=20 caused during removal from the casting). 
 
       I = found at our=20 local CarQuest auto parts store, a steel 5/8" hose barb to a 1/2" = NPT male=20 fitting. I just put it in a lathe, and turned the 1/2" NPT threaded = area=20 down to 17 mm, or .160 inches. In the picture, you will see the = longer=20 original piece, as well as the new, slightly shorter=20 nipple.
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