>      Snip
     >      >
     >      > I took the liberty of adding the 2 rotor HP numbers on the right of Bob's
     >      > chart in case someone though we were getting 600 HP out of a two rotor :)
     >      >
     >      > BTW the 175 refers to an 18 inch long manifold runner and the 150 is
     >      > an inch shorter roughly. Very sensitive in this area. The 175 mm is added
     >      > to the the fixed lenght of about 10 inches.
     >      >
     >      > I am really excited about the potential of the P-port and the 2.85:1 gear box
     >      > in aircraft use. To get the RPM up to realize these HP numbers IMHO we need
     >      > to use a modest diameter prop with wider blades. More on this shortly.
     >      >
     >      > A square law function curve plotted on these charts will show the effect of prop
     >      > load. Prop load HP is at least a square law and maybe as much as a cube law.
     >      > A series of these curves overlaid on these charts could represent different
     >      > prop pitches.
     >      >
     >      > Paul Lamar
     >      >
     >        Paul ,
     >
     >           The total length of the intake is 10 inches fixed plus 18 inches (175mm) or
     >
     >       15 inches (150 mm)........Is that correct ?

     NO total lenth is 18 inches.

     >           Thanks for the renderings for the Delta......Do you think the "Russell"
     >
     >       will fit with the extended redrive ? I like the alternative manifold except the
     >
     >       external ram-air gooseneck would have to go......  < :})
     >
     >
     >
     >      Kelly Troyer

     I'll get around to trying that.

     Paul Lamar

     Kelly, note that these calcs are for the Lemans engine.  As I understand Paul's calcs the fixed portion of the Leman's intake is 11"  (~279.4MM).  The additional lengths are an offset to
     this intial length; thus +175MM (~6.89", round to 7") is a total of 18".  Note that 1" = ~25.4MM.
     Ken Powell

 
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