Mailing List flyrotary@lancaironline.net Message #38007
From: Jerry Hey <jerryhey@earthlink.net>
Subject: Re: [FlyRotary] Re: PP construction methods
Date: Thu, 21 Jun 2007 09:21:41 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
With the boring head,  you can move the tool in and out to match the radius of the housing at that location.    A friend who is a real machinist (as opposed to an  amateur like myself) did it for me.  Only took about 10 minutes.   Jerry

On Jun 21, 2007, at 8:59 AM, Russell Duffy wrote:

Greetings,
 
Sorry to post a question and disappear, but my coworker is off this week, and the MRI gods are angry...
 
Thanks for the great info.  I thought I had read (maybe from Lynn) that welding the housings was a bad idea.  Have you actually welded any of these George?  Got any pics?
 
If a light press (small hammer <g>) fit with epoxy is OK, then that sounds like the way to go.  Shouldn't be too tough to come up with some mechanical method of holding the tube on the outside.  Lynn, would there be a problem TIG welding the aluminum tube to the outer portion of the housing?  Just 3 or 4 telltale spots would probably be enough.  
 
Jerry, how did you ever shape the end of that tube without scratching the housing???  Absolutely beautiful :-)
 
Cheers,
Rusty (off to Panama City) 

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