Return-Path: Sender: (Marvin Kaye) To: flyrotary@lancaironline.net Date: Tue, 13 Jan 2004 19:24:30 -0500 Message-ID: X-Original-Return-Path: Received: from mail.viclink.com ([66.129.220.6] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 2930283 for flyrotary@lancaironline.net; Tue, 13 Jan 2004 08:43:37 -0500 Received: from viclink.com (p115.AS1.viclink.com [66.129.192.115]) by mail.viclink.com (8.11.7/8.11.7) with ESMTP id i0DDhX311862 for ; Tue, 13 Jan 2004 05:43:33 -0800 (PST) X-Original-Message-ID: <4003F612.10602@viclink.com> X-Original-Date: Tue, 13 Jan 2004 05:43:46 -0800 From: Perry Mick User-Agent: Mozilla/5.0 (Windows; U; Win95; en-US; rv:1.0.1) Gecko/20020823 Netscape/7.0 X-Accept-Language: en-us, en MIME-Version: 1.0 X-Original-To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: Success References: Content-Type: multipart/alternative; boundary="------------080502070608020201080401" X-RAVMilter-Version: 8.4.3(snapshot 20030217) (mail.viclink.com) --------------080502070608020201080401 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Mark, I would like to do this mod at some point, is there a 3/8 NPT to AN10 adaptor available somewhere? Is that what you used? I think the standard AN10 part has 1/2 NPT pipe thread. Mark Steitle wrote: > Paul, > I was able to tap mine to 3/8 NPT which left adequate wall thickness. > > Mark S. > > > At 09:54 AM 1/12/2004 -0500, you wrote: > >> 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 ----- From: Finn Lassen >> To: Rotary motors in aircraft >> 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). 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. >> --------------080502070608020201080401 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit Mark, I would like to do this mod at some point, is there a 3/8 NPT to AN10 adaptor available somewhere? Is that what you used? I think the standard AN10 part has 1/2 NPT pipe thread.

Mark Steitle wrote:
Paul,
I was able to tap mine to 3/8 NPT which left adequate wall thickness. 

Mark S.


At 09:54 AM 1/12/2004 -0500, you wrote:
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 -----
From: Finn Lassen
To: Rotary motors in aircraft
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).
 
       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.


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