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Thread: Dual Prop on R3

  1. #1
    SHOBiz's Avatar
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    Dual Prop on R3

    Questions, questions, question...

    Anyone using a Dual impellar with an R3 ECU? Results?


  2. #2
    hitman's Avatar
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    I may try that in the near future Dave. I may enter a race and was going to see how it compared to the long blade 81mm nozzle combo I am trying now. Could be a couple weeks though. I don't know of anyone else who has tried it first hand in a SHO. Possibly R3 Killa or one of the other Cayman guys might have in the past. For a while they were really liking the 160mm liner and twin prop setup. Don't know if they are still running it as they haven't posted in quite a while. Maybe shoot them a PM.

  3. #3
    BOOSTED DEMON . ray813's Avatar
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    i got one on mine

  4. #4
    Just relax and enjoy the ride. XLT Chad's Avatar
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    Quote Originally Posted by ray813 View Post
    i got one on mine
    Well?.........How do you like it?
    What other mods are you running with it?

  5. #5

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    R3 and dual prop on my stock class fzs. I love this impeller, no cavitation at all and acceleration is good. Top speed is not high though, 68mph, but I do have worx plate on this boat and it slows speed down.

  6. #6
    gordon lasiter #328's Avatar
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    i have the R3 with a twin prop running a C5 wheel.
    when the motor was acting up i was getting only 74/75 mph.
    my rpms where speratic from 7900 to 8700.
    i was having motor problems so i can not give an accurate reading on how the twin prop was performing.
    but the twin prop is tuned for the wheel you are using with it.
    and to get the similiar speed out of a twin that you would out of a single prop the twin needs to turn +400 rpms.

  7. #7
    dhoad's Avatar
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    I hope to test my twin prop this weekend with the R3. I will be comparing the twin prop to a 14/25 skat
    I just pulled the transom plate and smoothed transitions, resealing with 3M UV 4000. Hopefully my cavitation will be gone with a better seal on transom plate and twin prop

  8. #8
    philip_gpr's Avatar
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    The dual prop is based on the Skat full swirl design. This large rounded blade shape provides a very good holeshot and great mid range. The disadvantage with this design is you give up approx 2 mph on top.

  9. #9
    BOOSTED DEMON . ray813's Avatar
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    the best i got out of it is 84.6 at 8500 rpm in a real hurry with no cavitation the only problem is keep it on the water

  10. #10
    hitman's Avatar
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    Quote Originally Posted by ray813 View Post
    the best i got out of it is 84.6 at 8500 rpm in a real hurry with no cavitation the only problem is keep it on the water
    That is a KILLER speed for a twin prop at 8500rpm. Can you share the rest of the setup?

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