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  1. #1

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    Best Prop for engine pipe combo

    Don,
    I just purchased an Oxai Pinnacle sporting a YS 160 DZ with an NMP Header and Hatori 693 Pipe. It currently has a 2 blade 16.5 x 12W APC and was wondering if that combo is perfect, or should I order a 4 blade. (The plane only has 12 flights and I am told everything is new to the plane. )If so what size, namebrand and place of purchase would you suggest? I will be flying Intermediate if that bears any supporting relavence.

    Thanks in advance,
    J. Tucker

  2. #2
    Don Szczur's Avatar
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    RE: Best Prop for engine pipe combo

    4 Blade will give you slower speed. I'd suggest trying out what you have and if you like it you can always continue or experiment with different prop combinations at a later time.

    Coming to the FARM Warrenton, VA pattern contest in 3 weeks? I'd be happy to let you try a 4 blade on your plane to see what you think.

    Don

  3. #3

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    RE: Best Prop for engine pipe combo

    Don,
    Oh how I wish I could attend. I'm still in Iraq. I won't be home until Oct 20th or so. I don't know if you remember me, I came to several contest with Carl Zal..... in 06 and one in 07. I talked with you about your Comp Arf Extra because I wanted to do a tribute scheme SX. I just ordered a 3.3m Yak with the old Giles 202 Flag Scheme so I can complete that tribute scheme. I look fwd to seeing you again and I will probaly just order a 4 blade so as I'm practicing over the winter I can experiment.
    Do you have a recommeded diameter and pitch or place to purchase.
    Thanks again Don,
    James Tucker

  4. #4
    Don Szczur's Avatar
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    RE: Best Prop for engine pipe combo

    Best Place I've found in Central Hobbies. www.centralhobbies.com

    15.5x12 has worked well for me.

    Don

  5. #5

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    RE: Best Prop for engine pipe combo

    Don, Why do you recommend high pitch propellers for pattern?
    Bob Davis, Owner - Davis Diesel Development

  6. #6
    Don Szczur's Avatar
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    RE: Best Prop for engine pipe combo

    The 4 blade prop high pitch keeps the noise down. We get very paranoid when it comes to the noise checks before each flight at the finals/ team selections. 4 blade- I found has the best "thrust to db ratio coupled with speed range" for glow planes (at least from testing on the Brio).

    Don


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