1/2 speed

[Jeff Hughes]

Yeah, they are heavy (the 90 lists at 28 ozs, about the same as a YS91). I didn't know if the ability to swing a much larger prop made up for the weight penalty. From what I read, that one of the advantages of the electrics were their ability to turn large props slower. 

  ----- Original Message ----- 
  From: Bob Pastorello 
  To: discussion at nsrca.org 
  Sent: Friday, December 31, 2004 7:06 PM
  Subject: Re: 1/2 speed


  Haven't heard, Jeff.  Aren't they like the heaviest motors that have ever been assembled?  Or did I get the wrong impression about that?

  Bob Pastorello
  NSRCA 199  AMA 46373
  rcaerobob at cox.net
  www.rcaerobats.net


    ----- Original Message ----- 
    From: Jeff Hughes 
    To: discussion at nsrca.org 
    Sent: Friday, December 31, 2004 6:02 PM
    Subject: 1/2 speed


    Has anybody used one of the RCV 4-stroke engines where the prop turns 1/2 engine speed? I was thinking of trying the 90 size in a 60/90 size pattern plane. Their website recommends up to an 18x12 - 2 blade or a 15.5x12 four blade for the 90. 
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