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  1. #1
    dpoole5074's Avatar
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    Give me your opinion???

    Just wanna know if what I am running in my ski if I can run a 15/22 prop?? Hear they will run on the X ski's and I think I am over them ( since they can't catch me the way I am ) Wanna know all your opinions...tweek it or go with the 15/22...Any help would be awsome cause the hole prop thing has got me a little lost to tell you the truth...lol....Thanks


  2. #2
    Site Admin Green Hulk's Avatar
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    I think you are better off with the 15/20

  3. #3

    15/20

    Quote Originally Posted by Green Hulk View Post
    I think you are better off with the 15/20

    15/20 is your best option with your current mods.

  4. #4
    Water4fire's Avatar
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    Most people don't understand how big the 15-22 is. Or for that the X boat runs a 87mm nozzle to be able to run that big prop. DOG it down with a Stock RXP nozzle and you will see how big it is.

    Stick with a 15-20 until you get a big dog SCer.

    .

  5. #5
    Gotta love this sport! 05Limited's Avatar
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    Side note: We noticed at the World Finals that Solas has released a 15/21... maybe others knew this but it was the first I had seen of it. Might be a great compromise for some of us.

    BTW... dpoole, I agree, the 15/20 is the best choice for your current set-up.

  6. #6
    West Texas RXP skoepp's Avatar
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    Quote Originally Posted by 05Limited View Post
    Side note: We noticed at the World Finals that Solas has released a 15/21... maybe others knew this but it was the first I had seen of it. Might be a great compromise for some of us.

    BTW... dpoole, I agree, the 15/20 is the best choice for your current set-up.

    Jeff, can you tell me any more about the 15/21. Was it something they were advertising or something.

    So when would you think a 15/22 would be a better prop for a high boost RXP over a 15/20 heavily pitched?

    I would have to go back and check my setup but i think I ran stock 15/22 with 84 ring not to long ago and then switched back over to the 15/20 +1.4 -1.6 mm with 82 ring with a little more top end.

    I am just wondering how far i can go on a 15/20 with pitch added before it would be best to change props. For instance it seems that on stock ecu it seems most have to add quite a bit of pitch on a 15/20 as we increase the boost. Compared to running at 8,500 rpm + most seem to be closer to stock pitch or even some taken out to get perfered rpm.

    I guess i am wondering on stock ecu and rude2 if it would be best to bend 15/20 to the max or go different prop.

    sorry to hijack dpoole5074.
    To your answer per my findings i would stay with 15/20. It has done well for my ski with Rude1 but I am not sure as boost increases more with stock ecu.

  7. #7
    Gotta love this sport! 05Limited's Avatar
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    Quote Originally Posted by skoepp View Post
    Jeff, can you tell me any more about the 15/21. Was it something they were advertising or something...
    Steve, my friend Angelo (RXsPeed) and I approached the Solas booth to possibly purchase a couple of 15/22s. They were in the middle of the "we don't sell to the public" song and dance when an impeller stamp caught my eye and I reached down and picked up the 15/21 off the display table. I simply looked up at the dealer and he immediately said, "Oh, we just released that for the RXP-X".

    I grabbed a catalog on my way out... let me go see if it is listed.

  8. #8
    dpoole5074's Avatar
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    just wondering what a big dog SC is according to a previous reply>?? Running a X charger and thought that was a good SC....Anyway just wondering....Thanks

  9. #9
    West Texas RXP skoepp's Avatar
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    I cant speak for Austin but maybe can look at like this.
    Up to this point Rude1, bkit, or c kit was the big dog and a 15/20 has proven to work with those setups.

    I would have to assume that Austin is refering to the un know big scs that are out there now.
    I think know there are alot of unknows about all the new scs and what setups will be perfect.

  10. #10
    JESUS G's Avatar
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    Well , really i don´t know what´s the difference between 15/20 and 15/22 but i did a test with both impellers in my GTI Turbo, and i had better results with 15/20. At 8.200RPM the top speed is the same but when the engine go to 8.800 with 15/20 the speed increase but with 15/22 the top speed was the same at 8200 than 8800. I don´t know why but i supouse that 15/22 was made for "X" tunnel pumpo desing.

    I get better results with 15/20, more acceleration and more top speed...

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