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  • Engine Options for racing

    There's a lot of discussions concerning the pro's and con's of various engines. Which engines are serious contenders for each class of racing?


    Unlimited: Merlin & R3350 proven competitors
    Griffon? if so in any airframe other than one based on a
    Mustang?
    R4360? In which airframes? Sea fury, Corsair, new builds?
    Allision?
    Centuraus?
    Is there any motor produced within the last 45years that
    has potential to be raced in unlimiteds?
    Is the weight limit restiction in effect a rule that only permits
    WW11 era motors to race in unlimiteds?
    Is a twin with auto conversion motors potentially the only
    new engines that could race in unlimiteds (re pond racer)?


    T-6: Pratt & Whitney R-1340
    Is there any variants of this engine or modifications allowed?


    Jet: Is anything else allowed outside of the Progress AI-25TL turbofan?


    Sport: Any engines competitive other than the Lycoming IO-540 or the
    Ryan Falconer V-12?


    Formula one: Is the only engine choice the Continental O-200?


    Biplane: Is everyone running a IO 320?
    Any IO 540's?
    Would the Vedeneyev M-14P be competitive and allowed?


    Potential Unlimited Lights and/or Superbore class:

    Which engines would be competitive in this proposed class?
    Any motors not currently racing in another class that would only be able to race in this class?
    New/custom/auto conversions?
    Is the IO 720 the only current motor that would now be allowed?
    Any vintage motors that would find a niche in this class?

    I hope this generates some interesting discussion on here.

  • #2
    Re: Engine Options for racing

    Originally posted by zeke
    T-6: Pratt & Whitney R-1340
    Is there any variants of this engine or modifications allowed?


    Jet: Is anything else allowed outside of the Progress AI-25TL turbofan?




    Formula one: Is the only engine choice the Continental O-200?

    The T-6, Jet and F1 classes must use only stock motors, and are very, very restrictive in what mods are and are not allowed.

    Comment


    • #3
      Re: Engine Options for racing

      Forgot to include the R 2800 in the list, some of the early Reno wins with Bearcats were with this motor and not from Bearcats modified to take the R3350?

      Comment


      • #4
        Re: Engine Options for racing

        Originally posted by zeke
        Forgot to include the R 2800 in the list, some of the early Reno wins with Bearcats were with this motor and not from Bearcats modified to take the R3350?
        Wildfire has a 2800 along with Czech Mate.

        Jarrod

        Comment


        • #5
          Re: Engine Options for racing

          Originally posted by zeke
          Forgot to include the R 2800 in the list, some of the early Reno wins with Bearcats were with this motor and not from Bearcats modified to take the R3350?
          True. But the fastest that Greenamyer's Bearcat ever turned on a racecourse with the -2800 was 435 mph. That is not even enough for a middle of the pack finish in the gold these days.

          Comment


          • #6
            Re: Engine Options for racing

            I wonder what might happen if somebody built a big metal (to make it heavy enough) NXT style airplane with R-2800 power. Imagine Czech Mate's size and weight, but in a modern aerodynamic package.
            No pixels were harmed, honest.

            http://www.ignomini.com
            http://www.pbase.com/ignomini

            Comment


            • #7
              Re: Engine Options for racing

              Reply
              ignomini "I wonder what might happen if somebody built a big metal (to make it heavy enough) NXT style airplane with R-2800 power. Imagine Czech Mate's size and weight, but in a modern aerodynamic package."


              In a custom built unlimited racer, what would be the ideal motor? Taking into consideration power/size/weight/drag. The lighter motors (Merlin/Allision/R 2800) or going for the heavy metal (Griffion/R3350/R4360) and heavier airframe.

              I would tend to side with the lighter, more aerodynamic options.

              Comment


              • #8
                Re: Engine Options for racing

                An interesting project, if you haven't seen it, is Cameron Murdo's TEAM 51
                with an Allison, it should come in right at the minimum. Light and smooth, this could be very interesting.

                Paul

                Comment


                • #9
                  Re: Engine Options for racing

                  Originally posted by Apteryx
                  An interesting project, if you haven't seen it, is Cameron Murdo's TEAM 51
                  with an Allison, it should come in right at the minimum. Light and smooth, this could be very interesting.

                  Paul
                  That's Murdo Cameron. A Scottsman all the way.....

                  Comment


                  • #10
                    Re: Engine Options for racing

                    Originally posted by speeddemon
                    That's Murdo Cameron. A Scottsman all the way.....
                    DAMN, it would have worked with a comma, (and I'm part Scott too), or is that part Scotch

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