Message-ID: <3F738CFD.4040906@nc.rr.com>
Date: Thu, 25 Sep 2003 20:49:01 -0400
From: Ernest Christley <echristley@nc.rr.com>
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.1) Gecko/20020826
MIME-Version: 1.0
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: DIE the short Answer
References: <list-2602819@logan.com>
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Transfer-Encoding: 7bit

Jim Sower wrote:
> I don't think ingesting iron filings is the way to go, and I don't think magnets
> will prevent ingestion.  I further don't think any of us can develop a reliable
> (key word here), simple (even more key) telescoping intake.  For openers, it
> would involve a largish object (plenum, throttle valve and connection to air
> filter/turbo) that sort of meanders all over the engine compartment, roaming
> hither and yon in search of the ideal runner length, and only very marginally
> lashed down (as that would inhibit its meanderings).  This whole train of
> thought is turning into a ten cent tail wagging a forty dollar dog.

Get some flat weather stripping.  Make the outside tube large enough to 
accept the weather stripping.  You'll want one side of the stripping 
attached to the inside tube, with the other side folded over.  As the 
intake tries to suck air, it'll pull the strip out against the outside 
tube.  You'll get a perfect seal every time.

Put the plenum on an X-Y table.  I wouldn't think that it would have to 
travel more than a few inches, and moving the plenum 1" will give you 2" 
more tube.


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