A great first day with the Hydrodyne

Discussion in 'The Beach' started by markbano, Jun 24, 2007.

  1. markbano

    markbano Hydrodyne 18 Specialist

    Joined:
    Nov 4, 2005
    Messages:
    854
    Boat Model and Year:
    1973 Hydrodyne Tournament Skiier
    I've got more pictures from my first day out with the Dyne.

    Here's one.

    I put about 4 hours on it today. Ran great - had a load of fun. Here it is in the water.

    Best,

    MarkBano
     

    Attached Files:

  2. dynegreg1

    dynegreg1 King Dyner

    Joined:
    May 31, 2006
    Messages:
    587
    Location:
    Pingree Grove, IL
    Boat Model and Year:
    1990 Hydrodyne 20 Open Bow
    Ski Team:
    Skimmer/Aquanut alum
    Looks great Mark. Sits excellent in the water. Sits perfect in the rear. Rope guard looks good. Did the depth gauge work ok? What props did you use, and what were the results of each prop? Fill us in.

    Greg
     
  3. markbano

    markbano Hydrodyne 18 Specialist

    Joined:
    Nov 4, 2005
    Messages:
    854
    Boat Model and Year:
    1973 Hydrodyne Tournament Skiier
    Greg

    I put an aluminum 21 pitch on there. It cannot handle the power by a long shot. The blades have lost all the paint in the middle of the blades from the bending under load.

    I am seeing 62 MPH pitched just slightly up trim at WOT and about 5,400 RPM. I can actually get more speed if I back off the throttle a touch and ease the prop's pain.

    I'm going to try my brother's stilleto 19 pitch SS prop today, although it already has a chunk missing from one blade due to hitting a submerged anchor last week. I'll see what the SS does on my boat today.

    With full fuel, my boat behaved pretty well. I could give it only a small amount of nose up trim at high speed - any more trim and it will porpoise. The porpoising got more extreme as I burned off fuel through the day. By the end of the day it had to be trimmed full down when pulling a skiier or it would porpoise. So I need to either put some balast up front or I need a different prop type. We'll see what the SS 19 does today.

    Otherwise, everything worked great. The acceleration borders on scary. You can tell the motor actually wants a bigger prop, because it loafs along at 50MPH at half throttle. However, I understand all the trade off's there...

    I did blow one of the pressure lines off of an airguide while doing 60+ MPH - and had water squirting everywhere under the dash. That was fun. The top piece on the tow pilon rattles, which is annoying. I need to put a shim at the junction of the pole top and the pole to get rid of that noise.

    Pulling my daughter at 15 MPH the boat does plow water a bit. I might think about putting in a wedge next year, although the kids will grow fast and for larger skiiers it is no problem.

    Speed holding is OK but not great at lower speeds - mostly because the boat is not planed out.

    I love the handling - which goes without saying. At low speeds I can turn this boat up on its side and on several occassions I had water come up over the side and flood the footwell!

    I haven't tried to walk the boat or anything - I am in the break-in period, after all. ;) I will say that if you trim it up just a hair and hit the throttle the entire boat comes out of the water and you certainly know when it lands...

    I love the steering. As frustrated as I was installing and bleeding the lines, the performance is revolutionary. All I need to do is get back in my brother's glastron with the single cable R&P steering to realize what the hydraulic steering does for you.

    As for pulling my brother out of the water on a deep water slalom start - well, his arms will heal.

    My dad has a hard time pulling the little ones out of the water - you need just a little touch of throttle or else you throttle the skiier. He's getting the hang of it, though. Everyone loves the view over the front.

    The one thing that I did which I am very happy about is install the swivels on the seats. For skiing, we keep the two px side seats facing back. The primary spotter sits next to the driver. We keep that seat angled towards the driver slightly, which makes it easy for the spotter to talk to the driver. It is really very slick. It is also really nice to be able to sit in the driver's seat and swivel a bit to look back.

    Did I mention that this boat is an attention magnet on the lake? I had quite an audience out there - and I didn't let them down. If you get going about 35 MPH and then let off the throttle a bit and spin the wheel this boat turns up on its side and hides itself entirely behind a wall of water. That is an attention getter. And I like attention.

    I'm anxious to get out there and put some more hours on the boat today. I'll post some more pictures here if I can get my dad's computer to load them up.

    Best,

    MarkBano
     
  4. 2MERCS

    2MERCS Administrator

    Joined:
    Dec 14, 2004
    Messages:
    794
    Location:
    Eastvale, Ca
    Boat Model and Year:
    1973 Hydrodyne 18 w/Twin 1150 Mercs
    Good show,

    All that work pays off in the end. It is such a beautiful boat Mark.

    Daniel
     
  5. markbano

    markbano Hydrodyne 18 Specialist

    Joined:
    Nov 4, 2005
    Messages:
    854
    Boat Model and Year:
    1973 Hydrodyne Tournament Skiier
    Thanks, Daniel!

    I'm having a blast. This boat is so unbelievably fun to drive...

    I went out just at dark with my dad and we went around the lake with the guage lights lit up and just took it real easy. Just such a pleasure. It is so smooth and powerful. I couldn't be happier with it.

    The Stiletto SS 19 prop is much, much better. A bit slower top end (58MPH), much more pull, and no vibration.

    I'll try to attach a couple more pics. Below is my brother and his wife - my best effort at a shot of the boat in action... and a couple more "beach" pictures.

    The picture of my dad skiing is right as he is about to drop a ski by our swim raft so my brother has slowed up a bit for the drop - thus the bow rise in the picture. At plane it runs pretty nice and flat.

    Best,

    Markbano
     

    Attached Files:

  6. dynegreg1

    dynegreg1 King Dyner

    Joined:
    May 31, 2006
    Messages:
    587
    Location:
    Pingree Grove, IL
    Boat Model and Year:
    1990 Hydrodyne 20 Open Bow
    Ski Team:
    Skimmer/Aquanut alum
    The top piece on the tow pilon rattles, which is annoying. I need to put a shim at the junction of the pole top and the pole to get rid of that noise.


    Mark,

    You can get rid of that noise by mounting a trick release directly between those two pieces. Mine did the same thing, when I got the release I mounted it in that area, and poof the noise was gone.

    Greg
     

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