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Date: Thu, 29 Nov 2007 11:28:44 -0500
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From: kneaded pleasures <kneadedpleasures@sbcglobal.net>
Subject: Removing ram air duct from 360 cowling
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Unless persuaded otherwise by commentary from this august body, I intend to remove the ram air duct from my 360 cowling for these reasons:
   
       *Never use ram air;  *It doesn't work (doesn't add inches of air pressure);  * It is draggy (perhaps add a knot of speed by removing);  *Making a tight seal of cowling to ram air aluminum structure has always, for me, been problematic causing some loss of ram air pressure and adversely affecting cooling air;  *Saves weight and complexity (remove one long cable and and air valve and replace with simplified, gently-sweeping 90-degree elbow into fuel injection from air-box/filter);  *Doing previous step permits further streamlining of cowling;  *Plane is now in a repaint cycle so this is logical time to modify cowling;  *Aircraft will hereafter use only clean filtered air;  *Facilitates removal and installation of cowling (less time on my back; less dirt and fewer expletives);  *Most spam can planes have only a single source of filtered air (...I think);  *Air filter will be parallel to airflow entering the plenum  making it very highly unlikely that the air-box can
 ever be plugged so as to suffocate the engine.  Oh, yes, did I say that I never (except for test) use the ram air feature in flight?
   
  My loins are girded.  What thinkest you of this plan?   Greg Nelson

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<DIV>Unless persuaded otherwise by commentary from this august body, I&nbsp;intend to remove the ram air duct from my 360 cowling for these reasons:</DIV>  <DIV>&nbsp;</DIV>  <DIV>&nbsp;&nbsp;&nbsp;&nbsp; *Never use ram air;&nbsp; *It doesn't work (doesn't add inches of&nbsp;air pressure); &nbsp;* It is draggy (perhaps add a knot of speed by removing);&nbsp;&nbsp;*Making a tight seal of&nbsp;cowling&nbsp;to ram air aluminum&nbsp;structure&nbsp;has always, for me, been problematic&nbsp;causing some loss of ram air pressure and adversely affecting cooling air;&nbsp;&nbsp;*Saves weight and complexity (remove one long cable and and air valve and&nbsp;replace with simplified, gently-sweeping&nbsp;90-degree elbow into fuel injection from air-box/filter);&nbsp; *Doing previous step&nbsp;permits further streamlining of cowling; &nbsp;*Plane is now in a repaint cycle so this is logical time to modify cowling; &nbsp;*Aircraft will&nbsp;hereafter use only clean filtered
 air;&nbsp;&nbsp;*Facilitates removal and installation of cowling (less time on my back; less dirt and fewer expletives);&nbsp; *Most spam can planes have only a single source of filtered air (...I think); &nbsp;*Air filter will be parallel to airflow entering the plenum&nbsp; making it very highly unlikely that the air-box can ever be plugged so as to suffocate the engine.&nbsp; Oh, yes, did I say that I never (except for test) use the ram air feature in flight?</DIV>  <DIV>&nbsp;</DIV>  <DIV>My loins are girded.&nbsp; What thinkest you of this plan?&nbsp;&nbsp; Greg Nelson</DIV>
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