Mailing List flyrotary@lancaironline.net Message #66638
From: Marc Wiese cardmarc@charter.net <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: Cowl inlet placement?
Date: Thu, 25 Feb 2021 09:43:56 -0600
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
And if I do that I really should change the standard RV-4 cowl inlets to a round ones further out in the prop wash to improve (ground) cooling. 

Finn,
Can you refer me to the literature that recommends putting the cowl inlets as far outward as possible? I know there is a lot of ‘common knowledge’ about this; turbulence at blade roots, downward blade wash on right inlet cause in intake turbulence, etc, etc, but I’ve never seen a study or comprehensive article on inlet placement. The inlet ramping is also highly important. 
Makes me wonder why the latest restart models of the Cessna’s didn’t implement same. I know LoPresti did similar with differing success. 
M   
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