Message-ID: <000801c3c715$2959d6a0$1702a8c0@WorkGroup>
From: "Ed Anderson" <eanderson@carolina.rr.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-2898553@logan.com>
Subject: Re: [FlyRotary] exhaust
Date: Sat, 20 Dec 2003 11:20:19 -0500
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 2003 10:18 AM
Subject: [FlyRotary] exhaust


> Finn and Ed;  Now that the exhaust is back in the discussion, what are
your
> thoughts on fabricating some splitters like the turbo engines have and
> installing them in the first two or three inchs of the exhaust pipes.
JohnD
>
>
John, early on I make some splitter like inserts - actually they were cut
out of 1/8" thick stainless steel square and shaped like a four bladed
propeller.  Cut to near the center of the square from two axis and then bend
each arm opposite its counter part.  I then place then after the header into
the exhaust pipe before the holed portion of the pipe.

The results were inconclusive.  They subjectively appeared to take some of
the "bark" off the exhaust note, but the exhaust blast soon moved them
further down the pipe into the holed region. .  I have not gone further in
experimenting with different types, but you would think that it would have
some benefitial effect.

Ed Anderson