Message-ID: <403061EF.60607@nc.rr.com>
Date: Mon, 16 Feb 2004 01:23:43 -0500
From: Ernest Christley <echristley@nc.rr.com>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: muffler?
References: <list-2993569@logan.com>
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Russell Duffy wrote:
> I also tried to expand a 1.75" .035" 321 stainless pipe today.  I need to
> make it fit the 2-1/8" hole in the exhaust flange, and there's no way I'm
> going to be able to do this.  It seems like a lot to stretch a thin wall
> pipe, and I was doing this as a test to see if it would work.
> Unfortunately, I just can't generate enough force with the tailpipe expander
> to do much with it.  I used an impact wrench, with about 120 psi of
> pressure, and the most I could stretch it was maybe 1/16".   I assume a
> custom exhaust shop could do this, but would the 1-3/4" pipe expand
> successfully to be 2-1/8", or would it split?  I'll either have to have it
> stretched, or buy something pre-stretched, or perhaps make a new exhaust
> flange.  
>  
> Ideas are welcome.
>  


You sound like you're running out of new skills to learn.  Try this:

http://www.aardvark.co.nz/pjet/spinning1.shtml


-- 
http://www.ernest.isa-geek.org/
"Ignorance is mankinds normal state,
   alleviated by information and experience."
                                   Veeduber