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The top of the cowl are frequently used as the upper side of a cooling plenum on air cooled engines. A seam there might make it harder to prevent pressure loss. Esthetics might play a part, looking through the window shield no seam shows. I can't think of any structural or aerodynamic reason - not to say there might not be some, but I can't think of one.
Ed
----- Original Message ----- From: "Phil White" <philwhite9@aol.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Tuesday, January 22, 2008 2:31 PM
Subject: [FlyRotary] Cowling split design?
Is there a reason all the cowlings I have seen are split as top and bottom halves? Perhaps for structural or aerodynamic pressure reasons? On a nosewheel plane, it would seem much easier to deal with cowl removal if it were split into left and right halves.
Inquiring minds want to know if I should rework my RV-10 cowl.
Phil #40220 w/Mazda 20B - engine work
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