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  1. #1

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    The Untouchable 15/19r

    Has anyone had trouble getting MPH out of there 15/19riva??? WILL the 15/20r solas do 80mph at 8500 rpms??? I would like to hear some answer's and thought's from you riva stage 3 guys. The acceleration is great but it doesn't follow threw! I can do 76-77 in 400' - 500'. Im in the same bracket as last year ,but it took the hole lake to get there.


  2. #2

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    I have the same problem.

  3. #3
    same here ,but it´s turning 8600 ,my friend has a stage II RXP i´m a little bit faster then him not much

  4. #4
    Site Admin Green Hulk's Avatar
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    Jim how many RPM's are you turning?

  5. #5

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    Jun 2006
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    Jerry ,i didn't get to trying what you wanted.The air is always changing. Last time out 8550 on top end , 500' out ,great acceleration with the ring,not lazy like before, one more tweek should do it ,but i dont have faith in his impeller. IF I HIT 80 /EVERYBODY IS GOING TO KNOW! Than i can move on with my life. and shoot for 85mph ,did someone say ride plate! I'll pm you ,you will be the first to know results.

  6. #6
    Water4fire's Avatar
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    I have a similar set up, but run a B-kit SCer and I am with you on the prop. I have tried a few combo's and can't see 80 with this prop.

    BUT I have only a 8400 RPM consistant w/ 82mm ring. So I am not at the 8500 Jerry Recommends W/ 81mm Ring.

    I copied Jerry's Build On Sundances Ski except with a B-kit and NOT a Rude. I see 13.5 LBS of boost at 8400RPM's. So I scratch my head, but still need to tweek it to his Recommendations.

    .

  7. #7
    Site Admin Green Hulk's Avatar
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    I'm having trouble with a 15/19R on my 07 right now. I just don't get it because this is the exact setup i put on Carey's old RXP and Sundance's ski and those skis run 82++. I can only get 79'ish out of this 07. The only things i haven't put on my new 07 that Sundance has is the skegs and the wedge. I just haven't had time. Hopefully i'll get to do some more testing this weekend. I'm also going to try a Solas 15/20R and back to back test it.

  8. #8
    i have the rr stock class ecu with a 15/20-2mm everything else stage III turing 8400-8450 rpm in some what choppy conditions speeds 77-77.4 mph getting ready 2 put on a set of skegs

  9. #9
    Water4fire's Avatar
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    Jerry I have the wedge and RE's. It RUNS VERY HARD from the get go, but peters out at 79 MAX. I have not installed my Skegs either.

    Gonna make a run to Rays lake house and see what he think when he Rides it.


    .

  10. #10
    Vern's Avatar
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    I wonder if the pitches are all over the place on the 15/19Rs possibly ... I bought one, Carl checked it, the leading pitch was 12, 12.5, 12.5, trailing was 17, 17.5, 18. He trued it up and we stuck it to 12.5/19. But, I have not run it yet either, sorry ... but I am only stage 2 also. Dan and I are both in the 78 mph range with our 4 blade 15/20s at 8100 rpm and 80mm rings on our stage 2+ setups. The old standby 15/20s work pretty well I guess.

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