Nautique 2001 Prop Comparisson

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  • Ride_Klein
    • Mar 2005
    • 8



    Nautique 2001 Prop Comparisson

    I've got a 1986 Nautique 2001. We got it a few years ago, and have loved every minute of it since she became ours. I used to slalom exclusively, but I've caught the wakeboard bug. With that bug comes the desire to pump up the wake and we've started adding weight to the boat. The stock prop just isn't cut out for what we want the boat to do now, and the recent development in prop technology has me looking for a new prop.

    I've seen tons of questions on here about new props, and I've got a rare opportunity to do a head to head comparison with a few different props. We use the boat about 50/50 for slalom and wakeboarding. All the research led me to order the Acme 542. Seems like most people were getting an awesome hole shot as well as gaining a mile or two per hour with this prop. I could have chosen the Acme 540, but after talking with the guys at Acme they suggested I order the 542 so we wouldn't ever have a problem with weighing the boat down.

    Lots of people have switched props but nobody has done actual comparisons between them that I've been able to find. I'll have access to the following props;
    the orignal 13x13RH (rebuilt and balanced two years ago, no hits or dings just normal use)
    13x13RH Completely rebuilt and balanced
    Acme 542 which is a 13x11.5RH.

    I've got a prop puller and I'm planning on running all three props on the same day in order to get measurements that are as close to accurate as possible. I'm going to measure 0-20 times weighted and unweighted, 0-30 times, 0-36 times. I'll give you a feel measurement for handling and ability to maintain speed when the rider is cutting both weighted and unweighted. I'll give you a feel measurement for boat vibration, and rudder feel.

    I'll post up pictures and my information when I'm done, but I wanted to see if anybody else had some questions or tests they wanted me to perform while I'm out on the water.

    I get the Acme on Wednesday of this week, and I hope to get on the lake that evening to do the tests. Le me know if you've got other questions and I'll get you what I can.
  • 882001
    Senior Member of PLANETNAUTIQUE
    • Aug 2003
    • 353

    • clear lake texas


    #2
    RE: Nautique 2001 Prop Comparisson

    http://www.correctcraftfan.com/artic...E_540_Prop.asp
    1988 Ski Nautique \"2001\"

    Comment

    • Hollywood
      1,000 Post Club Member
      • Sep 2003
      • 1930

      • WIIL


      #3
      RE: Nautique 2001 Prop Comparisson

      Here are a few other threads concerning the Acme 540/542

      http://www.correctcraftfan.com/forum...?TID=1351&PN=6
      http://www.correctcraftfan.com/forum...ID=907&KW=acme

      We barefoot and slalom mostly, although are known to wakeboard every now and then. I'd like to see somebody weight down their boat with the 540 on it and see what happens.

      Comment

      • Ride_Klein
        • Mar 2005
        • 8



        #4
        Thanks for the links. I had read them in my research, and they are a large reason that I chose the 542. It is great to read them again.

        The prop should be in tomorrow, and if we can get a break from the wind down here in Texas I'll hit the lake and get some results. I should be able to get a good comparisson between all three props.

        I've gotten some other recomendations from other sites and right now I'll be documenting the following things for each prop. Speed verified by GPS. Incidentally we run about 1000lbs of weight 400 in the back (behind the seat), 250 on each side of the motor box (bags touching the rear seat), and 100 up front. It will be myself and a spotter for the trip.

        Top Speed
        0 - 20 times (weighted and unweighted)
        0 - 36 times
        RPM's for 20 mph (weighted and unweighted)
        RPM's for 36 mph
        Time from 20 - off plain
        Time from 36 - off plain
        Feel raiting for vibration
        Feel raiting for steering
        Feel raiting for ability to hold speed while rider/skier is cutting
        Wake Pictures at 20 (Weighted and unweighted)
        Wake Pictures at 36

        There's been some talk about the rooster tail increasing at slalom speeds, as well as the wake "softening" and I'll try to comment on that.

        Anything else you guys/gals want to know?

        Comment

        • Hollywood
          1,000 Post Club Member
          • Sep 2003
          • 1930

          • WIIL


          #5
          Unweighted top speed, or at 4k rpm.

          Comment

          • Ride_Klein
            • Mar 2005
            • 8



            #6
            Sorry for the delay, but as life does, it got busy. I wasn't able to get an Acme 540 for the test, but I tested the other three. I've got all the data written down from our trip at home and I'll get it all put together tonight. All I can comment on now is the "feel" of the prop.

            One thing that I'll add is our top speed is actually 43 mph at 4400 RPM and not 45 when verrified by the Gps. Also, if you haven't had your prop rebuilt in a while go do it now even if you don't think it needs it. I hadn't registered any hits or dings on my older one, and it was not even on the same playing field with the 542 and the rebuilt. (I'll take this to mean that I have registered a number of small dings to the prop without noticing them, either way the prop looked fine to a visual inspection, but was not once we compared it to the other two)

            The Acme 542 is a huge improvement over both the other props. Keep in mind I was comparing a 2 year old 13x13, a freshly rebuilt and balanced 13x13, and the acme 542. It was much smoother, much stronger, and much quieter.

            The difference in hole shot and power is attributable to the 11.5 vs. 13 pitch. I'd heard it felt like adding 40 hp and I'll vouch for that. There was a discernable differencerence just "seat of the pants" when you give the boat power. The added power was great, and it was noticeable throughout the powerband. The Acme really shined when we put the weight in, and started pulling the rider. With the Acme 542 it was an easy pull to get the rider up and going, about 1/4 throttle was all it required. With the rebuilt and ballanced 13x13 it took about the normal 1/2-2/3 throttle. The same for the unrebuilt 13x13.

            I was expecting the power, but the thing that blew me away was the smoothness and the noise reduction. Right out of the hole the 542 was much better. Jump on it and the boat goes. With the Acme 542 there was no vibration throughout the powerband and speedband. It was as ultra smooth as I've ever felt the boat. Idle, cruise or WOT, the 542 felt smooth. The rebuilt 13x13 was very smooth up to about 25 mph. Once we got above that you began to feel what I would call normal prop vibrations. WOT was ok, but with a slight noticeable vibration. Had I not been comparing it to the 542 I wouldn't have noticed them. The 2 yr old unrebuilt 13x13 was a different story. (Keep in mind no hit or dings that I know of to this prop just normal use, and the only time I'm not driving this boat is when I'm behind it sking or riding). I hadn't noticed it before, but this prop was not very smooth compared to the other two. A small shutter was present when you applied a heavy amout of throttle, and at WOT, you could feel a noticeable prop vibration.

            The noise from prop vibration was all but gone with the Acme 542. All we could hear was the 351

            As we added weight to the boat the vibrations increased with both of the 13x13's. I still couldn't feel one with the ACME 542.

            Our Top speed stayed the same unweighted, but we do pull 150 more RPM (4550 compared to 4400)

            The rudder feel was about the same between the rebuilt and the Acme 542. Only difference was in the turns the boat felt a bit more solid, I can't tell if this was an actual difference or my body wanting to feel like the $300 prop I just bought was better.

            The wake at slalom speeds was a little smaller, but the rooster tail was a bit longer. I had heard one reviewer comment on this before. The wake also seemed a bit softer when crossing it. Overall I'd say I like the wake equally between the props.

            Driving a slalom skier was much better. Speed control was extremely easy. The same can be said for a wakeboard rider on an aggressive cut. Only mild adjustments were required to the throttle with the Acme compared to significant adjustments with the rebuilt.

            I did notice a more pronouced prop walk when reversing the boat. The first time I came to the dock was a surprise. After that I got used to it.

            My overall impressions of this prop are WOW. Great buy especially if you're going to be using the boat for wakeboarding at all. If you only use for the boat is slaloming or barefooting I would get the 540. (Keep in mind that I did not have the chance to test this prop, but I can imagine the vibration elimination and feel would be comparable).

            I should have the numbers all organized and up either tomorrow or the next day. If you've got questions ask away.

            Comment

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