YS Engines

[Dave Smith]

I had a Magic,but no reverse pitch prop.  This plane had the worst coupling effects of any I have ever built.
In Europe it was known as "The Tragic".

Dave
  ----- Original Message ----- 
  From: Rcmaster199 at aol.com 
  To: discussion at nsrca.org 
  Sent: Monday, March 29, 2004 8:50 PM
  Subject: Re: YS Engines


  Del is right on. The same could be said for retracts vs fixed gear. We eventually got them working super easy, but many had experienced more problems with retracts than with fixed gear. 

  One of the best and most successful Pattern pilots of all time, Hanno Prettner, opted to fly and win with the simple looking, easier set-up, "Calypso" at '91 World Championship (I think it was '91, in P'cola), vs. the much more "sophisticated" and complex "Magic". Both were his designs for those folks new to this sport . 

  The Magic sported things like reversible pitch prop, flaps, tricycle retracts and spoilers, with an inverted engine exhausting through the fuse top, and exiting through the bottom of the fuse. It was an engineering feat and a half for a pattern model. 

  In contrast, the Calypso sported a side exhaust, simple, sport style engine, canted to around 8 o'clock, with the pipe exhausting through the fuse bottom, and also had retracts but only two, plus a tail wheel. That was about as sophisticated as it got. He opted for reliability that comes from simplicity. We should learn from that lead.

  Matt K

    Subj:Re: YS Engines 
    Date:3/29/2004 6:32:09 AM Eastern Standard Time
    From:drykert at localnet.com
    Reply-to:discussion at nsrca.org
    To:discussion at nsrca.org
    Sent from the Internet 



    I have felt dependable low maintenance performance is the best package for competition. Leaves more time to help others and socialize. When we only had to fix and fly it was different but now that we fly and work it means we need lower maintenance packages to be competitive.

                             del 
                   NSRCA - 473


      ----- Original Message ----- 
      From: Mark Hunt 
      To: discussion at nsrca.org 
      Sent: Sunday, March 28, 2004 11:46 PM
      Subject: Re: YS Engines


      Simplicity is not a word you want attached to your high-tech pattern aircraft anyway....




        ----- Original Message ----- 
        From: Lance Van Nostrand 
        To: discussion at nsrca.org 
        Sent: Sunday, March 28, 2004 10:40 PM
        Subject: Re: YS Engines


        Jim,
        I'll bet by now you can assemble and disassemble the 15 moving parts that make up just the head of that engine with your eyes closed.  It's a zen like procedure that brings comfort and joy.  
          My engine only has one part (glow plug) and it doesn't move.  while you're doing that I'll have to find something else to tinker with....[where's the wife.....]
        --Lance


          ----- Original Message ----- 
          From: jim ivey 
          To: discussion at nsrca.org 
          Sent: Sunday, March 28, 2004 10:28 PM
          Subject: Re: YS Engines


          Lance 

          Guess I am getting soothed then. I just started the 3rd rebuild on a YS 140L.It has 450 flights on it.

          Jim Ivey







          jivey61 at msn.com 



          >From: "Lance Van Nostrand" <patterndude at comcast.net> 
          >Reply-To: discussion at nsrca.org 
          >To: <discussion at nsrca.org> 
          >Subject: Re: YS Engines 
          >Date: Sun, 28 Mar 2004 22:24:32 -0600 
          > 
          >Ed, 
          >Pattern guys love to tinker. If they are not adjusting something, replacing something, or doing periodic maintenance, they feel lost.  Therefore, YS engines help soothe the pattern mind. 
          >--Lance 
          > 
          >   ----- Original Message ----- 
          >   From: Edward C. Hernandez 
          >   To: discussion at nsrca.org 
          >   Sent: Sunday, March 28, 2004 9:55 PM 
          >   Subject: YS Engines 
          > 
          > 
          >      Ok, time for another newbie question: it seems to me from the discussion and contest results and a few copies of the K factor that Kane gave me at the D4 contest last year that pattern pilots prefer YS engines, yet YS engines don't seem to dominate in other kinds of flying(IMAC, scale, fun fly, etc). Um, why? 
          > 
          >   Ed Hernandez 









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