Engine Bearing Air Scoops

[wgalligan]

Bob,

If there was any time to test the effects of additional cooling it was this weekend in Nederland.  About 95 degrees and 80% humidity.   I have a recessed cooling port just above the bottom of the crank case on my Aries(looks like a blow hole) It directs the air right at the bottom of the case of this O.S. 1.40  After a flight the spinner is slightly warm but very normal.  If I was to just run the engine on the ground for a minute or two the the spinner gets pretty warm.  So I can only assume that it is helping a lot while in the air.  A little time on this engine will tell on the bearing thing.  

Wayne G.
  ----- Original Message ----- 
  From: Bob Pastorello 
  To: NSRCAMail 
  Sent: Sunday, June 22, 2003 3:39 PM
  Subject: Engine Bearing Air Scoops


  I know we're supposed to be flying, but I'm still motor-less...but getting there...
      A question for anyone who knows....what is the procedure for installing scoops/baffles on the cowling to cool the main bearing?
      Is there experience to justify putting them on the OS/Mintor/Webra larger two strokes?
      Any websites with "how to" info?
      Do baffles/scoops lengthen bearing life and reduce heat???

  Bob Pastorello, Oklahoma
  NSRCA 199, IMAC 1320, AMA 46373
  rcaerobob at cox.net
  www.rcaerobats.net

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