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  1. #1

    Join Date
    Jan 2002
    Hemet, CA
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    Sport Jett 46 prop

    Broke in my Sport Jett 46. Now I need advice
    on prop for Hi speed runs in Whiplash Delta.
    Plane is approx. 3 3/4lbs, I am using the stock muffler (red.
    Maybe APC pylon ? 8.8 in with 8.75-9.25 pitch? Wildcat 15% nitro
    Mike Longnecker
    Palm Springs,CA

  2. #2
    bob27s's Avatar
    Join Date
    Apr 2002
    Cleveland, OH

    Sport Jett 46 prop

    Hi Mike.....

    there are a variety of combinations you can try.

    I would say to start with a standard APC 9x7, and perhaps then try an 8.8x8.5 pylon prop or the 8.75x9W. Try and keep the SJ-46 engine in the 17K rpm (peak, on the ground) range... or slightly above. You can keep adding pitch as long as you stay in that rpm range. Another prop that works pretty well is the 8.5x7.25 pylon prop. The engine will really turn that sucker, and it will unload big time in the air.

    You may also want to post the question in the Extream Speed forum. There is quite a bit of experience in there

    I trust this will be helpful.

    Bob Brassell
    Dub Jett Engines and Products Support Forum Host or

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