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From: "Marvin Kaye" <marv@lancaironline.net>
Subject: Re: [LML] Re: supershargers
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Date: Fri, 18 Mar 2005 01:30:13 -0500
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Posted for "George Braly" <gwbraly@gami.com>:

  Craig,
  
  A few months ago,  I spent a day at our place with a former Garrett turbine
engineer.   He now works for the FAA.
  
  I posed this question to him.
  
  He pulled out his  old P & W pocket book  - - and we worked our way through
the rather straight forward equations.
  
  The equations don’t lie.
  
  We did the numbers for the IO-720 that one of our friends tried ( rather
unsuccessfully - - it went slower with the belt driven supercharger than it
did without).
  
  The equations showed why.  The blower required a lot of horsepower.  It was
not 70,  but it was close.
  
  Regards,  George