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  1. #1
    Ski Hacks MG's Avatar
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    Prop pitch for 4" Kana and 48-8350 tune?

    Just installed a 4" Kanaflex air intake as well as a Vtech 48-8350 (Normal) tune this weekend and since I do not have much experience bending props, I am looking for suggestions on a good initial pitch to put me right around 8250. I've searched around and I am seeing 15/20 or 15/21 but I am sure some of you have been around the bush a few times.

    Thoughts?
    Last edited by Ski Hacks MG; 08-03-2015 at 09:19 AM.


  2. #2
    Branden's Avatar
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    a 15/20 should be a good starting point.

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  4. #3
    Ski Hacks MG's Avatar
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    What would the difference be between a 15/20 and 15/21 performance wise? I have access to an SRZ-CD-15/21 for a good price but not the 15/20. Higher RPM's?

  5. #4
    Branden's Avatar
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    the problem is a 15/20 from riva or whoever or a 15/21 may not actually be that from them, but if both were true 20/21 you may see ~100ish rpm difference between the two. When i pitched my prop from a 22 to a 23 i saw a loss of about 100 rpm. to give you an example i ordered a 15/19 from riva that checked in at a 14/22 in my pitch gauge.

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    Ski Hacks MG's Avatar
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    Thanks Branden. Do you know what the OEM pitch is on the '10 TX 260 prop?

  7. #6
    Branden's Avatar
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    the tx no. the px prop is a 14/20 in stock form according to my gauge. The stock 14/20 prop acts nearly identical to a solas 14/18 as i ran both props in an 82+ mph ski and they turned identical rpm.

  8. #7
    Mod less, ride more! troyheb's Avatar
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    A 15/20 should be just about right. Alot depends on your weather. I run a 15/20 in my Tx and right now I see 8100 to 8200. In the cooler months it will spin right up to 8400.

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  10. #8
    Bounty Hunter Carlos Thomas's Avatar
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    I have a Solas Prop Pitched to 12.5/18 with the SpeedFreeks Set Back Mod and SpeedFreeks Speed Cone on my RXP-X 260. I have the same mods you listed. When it is warm and the engine is heat soaked I am at 8220 RPM and 74.0 on the GPS.

  11. #9
    prowler1k's Avatar
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    I have a few more mods and run a 14/19.5 pitched from impros. At 800msl/90 air and water I'll see about 8250.

  12. #10
    Site Admin Green Hulk's Avatar
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    Quote Originally Posted by CCW View Post
    Just installed a 4" Kanaflex air intake as well as a Vtech 48-8350 (Normal) tune this weekend and since I do not have much experience bending props, I am looking for suggestions on a good initial pitch to put me right around 8250. I've searched around and I am seeing 15/20 or 15/21 but I am sure some of you have been around the bush a few times.

    Thoughts?
    Best impeller for a reflashed ski would be the SRZ series 15/19R
    http://www.4-tecperformance.com/inde...oducts_id=2239

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