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  1. #1
    Will Willfzs's Avatar
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    Holeshot cavitation

    When out today for the first time with all the work in my signature. Water was cold but it was 80 degree air. It cavitates terrible on holeshot. the water was pretty choppy, but it is just a river so it wasn't that bad. Any attempt at WOT tests were impossible because it wouldn't stay hooked to save its life bouncing off the water forcing me to back off the throttle to keep it from over revving, unable to eclipse 65 unless I wanted to get pitched into the 50 degree water. I did manage to get AF readings at idle 13.3 and 12.9 at 5000rpm with fuel pressure set at 52lbs static. I really want a superior holeshot and quick acceleration. I will sacrifice a little top end to get it. I know the water was a little choppy but the cavitation still seemed excessive even in calm water attempts at launch. prop is a 15/23 skat.
    Last edited by Willfzs; 04-13-2014 at 05:08 PM.


  2. #2

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    2 choice, 160 mm prop and linner will be better or best is a 155mm or 160mm twin prop works real good to stop cavation and hook up all your HP on take off.

  3. #3
    Will Willfzs's Avatar
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    Quote Originally Posted by 2fast4u View Post
    2 choice, 160 mm prop and linner will be better or best is a 155mm or 160mm twin prop works real good to stop cavation and hook up all your HP on take off.
    What do you think for prop if I stick with 155mm.

  4. #4

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    Quote Originally Posted by Willfzs View Post
    Quote Originally Posted by 2fast4u View Post
    2 choice, 160 mm prop and linner will be better or best is a 155mm or 160mm twin prop works real good to stop cavation and hook up all your HP on take off.
    What do you think for prop if I stick with 155mm.
    here you go------- From R&D---- Twin Prop------- Pt. # 132-21812 R&D/SKAT-TRAK Pro Limited Twin Prop for R&D Pro Limited Kit.
    Note: Tested with complete R&D Pro Limited Race Kit with C5 wheel 15-17 pounds of boost, using R&D R3 Reprogrammed ECU w/stock pump and nozzle, 8500-8700 rpm / 80+ MPH
    Note: if rpms are a little low bore your reduction nozzle to 85 mm

  5. #5
    yamahamiamiski's Avatar
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    The skat trak twin prop sells for $750...there is a used one for sale now in the classifieds section now for $300: http://www.greenhulk.net/forums/showthread.php?t=214260

  6. #6

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    Quote Originally Posted by yamahamiamiski View Post
    The skat trak twin prop sells for $750...there is a used one for sale now in the classifieds section now for $300: http://www.greenhulk.net/forums/showthread.php?t=214260
    Note the 300 Dollars is for the main prop and 100 dollars for the inducer prop = $400 also I am not sure this is the pitch of R&D kit also this might be a differant pitch set up completely.

  7. #7
    Hello Tommy your statement is incorrect.i am selling a 14/20 twin prop for $300 total and have a seperate exducer 12/20 for $100.i used this setup with the LB wheel with good results.if Willfzs or anyone else is interested please feel free to pm me with any further questions.Thank you.

  8. #8

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    Quote Originally Posted by FXSlowKroozer View Post
    Hello Tommy your statement is incorrect.i am selling a 14/20 twin prop for $300 total and have a seperate exducer 12/20 for $100.i used this setup with the LB wheel with good results.if Willfzs or anyone else is interested please feel free to pm me with any further questions.Thank you.
    sorry my bad! You post looked like two seperate props for sale. Glad you updated your 4 sale post , Good Luck with your sale! Tommy Jordan

  9. #9
    64physhy's Avatar
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    Try the lucky 13 cone. It completely eliminated my cavitation.
    http://www.4-tecperformance.com/inde...oducts_id=2351

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  11. #10
    Quote Originally Posted by 64physhy View Post
    Try the lucky 13 cone. It completely eliminated my cavitation.
    Did you bore ur nozzle to 87mm?

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