Mailing List flyrotary@lancaironline.net Message #20081
From: Tracy Crook <lors01@msn.com>
Subject: Re: [FlyRotary] Re: SQ2000 flying again
Date: Tue, 12 Apr 2005 21:22:52 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Hi  Paul, the scat tube was 2.75" dia & about 4 ft long.  Gave me a major power loss (compared to ram air) partly due to pressure drop (1 - 2" Hg) and partly due to temperature rise, about 25 - 30 F.  I was very surprised at both.  If you have shorter run it may work better.  The larger diameter would reduce pressure drop but temp rise would be worse (as a quick guess).
 
Tracy

Hi, Tracy....thanks for the heads up....any more info would be appreciated....was it a long scat tube, and was it 3 inch diameter?  I assume you could not ingest enough air?  Thanks for any more info you can provide.  Paul Conner
----- Original Message -----
Sent: Monday, April 11, 2005 8:34 PM
Subject: [FlyRotary] Re: SQ2000 flying again

You have exactly described the first intake scheme I tried on the Renesis (NACA, Scat tube, etc).  Hope it works better for you than it did for me. 
 
Tracy (following the various sagas from SnF)
 
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