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  1. #1
    Tedcfitz's Avatar
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    Impeller Pitch Advice

    I am seeing all kinds of pitches on the conversion skies. It looks like it depends on setup. I need some help choosing an impeller pitch. My setup is a GPRXP with a 2000 Yamaha pump. Currently have a 13/19 pitch and I am all over the rev limiter bigtime on both takeoff and top end. My engine is an RXP-X 255 with 42 lb injectors, 11 lbs boost.

    I am considering the following and would appreciate any advice/experience. Thank you!

    14/20, 15/21, 16/23, 14/24


  2. #2
    Moderator beerdart's Avatar
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    It all depends on what brand of impeller.

  3. #3
    Tedcfitz's Avatar
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    I guess it does! I am referring to Solas DF

  4. #4
    Moderator beerdart's Avatar
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    Small hub pump and a DF you should be around 13/21.

  5. #5
    Tedcfitz's Avatar
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    Thanks!

  6. #6
    Tedcfitz's Avatar
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    As a follow up, I got a friend to pitch a Solas YG DF to 14/22.5. Increase speed from 76.4 to 84.5 mph. I am still hitting the rev limiter so I am going to try 14/25 next. Correction - I'm running the large hub pump.

  7. #7
    Happily Self-Employed WFO's Avatar
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    Quote Originally Posted by Tedcfitz View Post
    As a follow up, I got a friend to pitch a Solas YG DF to 14/22.5. Increase speed from 76.4 to 84.5 mph. I am still hitting the rev limiter so I am going to try 14/25 next. Correction - I'm running the large hub pump.
    what nozzle?

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