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  1. #1
    Aussiepauly's Avatar
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    RXPX260 with ET137 4mm

    What prop you guys using for this setup? 15/21 or 15/22? The 15/20 is all over the limiter with the 8650 tune.


  2. #2
    GOO$E Mongoose2's Avatar
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    15.5/21.5
    currently

    whats the rest of your setup?

  3. #3
    Aussiepauly's Avatar
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    Quote Originally Posted by Mongoose2 View Post
    15.5/21.5
    currently

    whats the rest of your setup?
    Thanks mate! running vtech injectors, FPR, 8650 tune, other mods in sig. I have been logging tune, got nearly perfect with vtech, just got to get prop right!

  4. #4
    Water4fire's Avatar
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    Raise the tune to the 8800 limit. Or I would add just add a tad of pitch to the 15-20

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  6. #5
    Aussiepauly's Avatar
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    Quote Originally Posted by Water4fire View Post
    Raise the tune to the 8800 limit. Or I would add just add a tad of pitch to the 15-20

    Don't know if I want to rev that high with stock pistons and rods, it would be around 8700-8750 i reckon with a 8800 tune with this prop!

  7. #6
    Sayers's Avatar
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    Def just raise the limit.

  8. #7
    GOO$E Mongoose2's Avatar
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    i run an 8850 limit but prop for 8600+

  9. #8
    Water4fire's Avatar
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    Quote Originally Posted by Aussiepauly View Post
    Don't know if I want to rev that high with stock pistons and rods, it would be around 8700-8750 i reckon with a 8800 tune with this prop!

    With the proper tune they will be fine. Heck I have seen them run way over 9000rpm's/
    Raise the limit in 5mins and ride today. Get back to us.

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  11. #9
    Mod less, ride more! troyheb's Avatar
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    Quote Originally Posted by Water4fire View Post
    With the proper tune they will be fine. Heck I have seen them run way over 9000rpm's/
    Raise the limit in 5mins and ride today. Get back to us.
    +1 Ocman for one has been running around 8800+ on stock internals for awhile.
    Get out and ride and give us some speed results.

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  13. #10
    JT jpt7779's Avatar
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    These skis make the best power at 8700-8800 and have great pump efficiency in this range. Set your rpm limit to 9000 and keep rpm in the 8800 range with impeller pitch.

    I have 2 pumps, 1 for hot weather 87mm and another pump with 83mm for cooler weather, both with different pitches but going the same speed 81.5. With good conditions ill have the 83mm combo over 82 soon.

    Keep the 15/20, and tweek it in small increments.

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