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  1. #1
    mr305's Avatar
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    Option solas impeller 13/18

    Solas makes a 13/18 impeller for the spark has anyone tried it yet


  2. #2
    GasResearch-VT.SE's Avatar
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    Too much pitch, good for stock without rpm limiter raised.

    12/13 for high rpm in pretty much stock form with retune.

    12/17 is good balance.

  3. #3
    Ryguy425425's Avatar
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    What kind of a difference in speed would you notice with a 12/17? How would it handle pulling a tube/skiier? Sorry if that's been answered a thousand times.

  4. #4
    xdrian's Avatar
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    all you wanted to know about props


    http://www.boatingmag.com/how-to/und...ropeller-pitch

  5. #5
    Site Admin Green Hulk's Avatar
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    Quote Originally Posted by mr305 View Post
    Solas makes a 13/18 impeller for the spark has anyone tried it yet
    A 13/18 will drag your RPM down too much and you will lose performance. The best choice for the Spark is the Solas 12/17
    http://www.4-tecperformance.com/inde...oducts_id=2552

  6. #6
    Meen66's Avatar
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    Would someone be able to explain to me a bit more in depth about pitch? I get that a pitch of 21 means that the impeller/Propeller means it would move forward 21 inches in a "soft solid", but when you say it has a pith of 13/18 or 12/17 what do the two numbers mean?

    thanks for any help!

  7. #7
    Leading edge is 13 degrees, trailing is 18. Impeller pitch is different than prop pitch.

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