Excelleron with OS 91FX in Intermediate ?

[Paul Horan]

Bob,
    For me it was need. Originally I wanted a "knockaround" pattern plane maybe a 3D twist, the response I got to that was a very polite "are you nuts!".  After rethinking my goals and listening to the responsed I received I decided on the Excelleron.
Reasonalble price, good quality and I hope good performance.
    I am looking forwards to hearing about your experience with this plane.  Any caveats or advice on a 120 2 stroke, cost is 
a concern but so is performance.
Thanks,
Paul
  ----- Original Message ----- 
  From: Bob Pastorello 
  To: discussion at nsrca.org 
  Sent: Tuesday, December 21, 2004 9:23 PM
  Subject: Re: Excelleron with OS 91FX in Intermediate ?


  The 1.20 class two-strokes in this airplane will probably provide the best power at the lightest overall weight.  The ST is overkill, and added about 8-9 oz overall more than should have been there, because it starts out at 31 oz, then add the exhaust system.  Most of the 1.20's, I think, are coming in at 31-33 oz WITH exhaust systems, and that reduces wing loading about 2 oz/sq.ft.

  I'm ready to test hop, awaiting the header, which is in process.  It is surprising to see this one design catch on so rapidly.  Was it price?  Performance?

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


    ----- Original Message ----- 
    From: Randy 
    To: discussion at nsrca.org 
    Sent: Tuesday, December 21, 2004 9:10 PM
    Subject: Re: Excelleron with OS 91FX in Intermediate ?


    I order a Tiger Shark 1.20 for my excelleron90.  Should be about right.
    Randy
      ----- Original Message ----- 
      From: Paul Horan 
      To: discussion at nsrca.org 
      Sent: Tuesday, December 21, 2004 6:37 PM
      Subject: Re: Excelleron with OS 91FX in Intermediate ?


      Bruce,
          Thanks, that's what I am concerned about.  The OS 91 FX most likely will require a pipe to do the job and the Excelleron
      is not set up for a pipe.  I may have to resort to a larger 2 stroke engine.  Bob Pastorello is using a Super Tiger 2300.
      Not sure I wish to go that big !
      Thanks,
      Paul
        ----- Original Message ----- 
        From: Pattrnflyr at aol.com 
        To: discussion at nsrca.org 
        Sent: Tuesday, December 21, 2004 5:22 PM
        Subject: Re: Excelleron with OS 91FX in Intermediate ?


        I have a scratch built Typhoon 909 that weighs around 8 to 8.5 pounds.  The "Littlephoon" has 909 square inches of wing, about a 70 inch wing span.  I fly intermediate at 5500 feet MSL.  The YS91 did not have enough to fly the Int pattern, because of the two maneuvers you mentioned.  I put a YS 110 in the Littlephoon, and now I have plenty of power swinging a 15X8.  I have no experience with the OS, but I would think the YS would be a little lacking. 

        See ya,

        Bruce 
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