jackplate

Discussion in 'Hydrodyne® Boats' started by Pat Colvin, Oct 3, 2017.

  1. Pat Colvin

    Pat Colvin Hydrodyner

    Joined:
    Sep 20, 2016
    Messages:
    50
    Boat Model and Year:
    it is a Hydrodyne but not sure what year just boug
    has anyone used a jackplate on a Hydrodyne around 1970 to 1974, I HAVE A SHORT SHAFT JOHNSON 115 HP but want to go bigger to a 200 to 300 hp but cannot find a short shaft
     
  2. RiverRat

    RiverRat Hydrodyne 18 Specialist

    Joined:
    Sep 30, 2006
    Messages:
    503
    Location:
    Shoreview, MN
    Boat Model and Year:
    1971 Baby Dyne
    Ski Team:
    Twin Cities River Rats
    20' hydrodyne? I know the Rock Aqua Jays use jackplates on their triples, and seem to have excellent results.

    Why the difficulty finding a 20" 200+? There should be plenty of ski team motors available for a pretty reasonable price. Where are you located?

    If you can find an Evinrude 200HO (big block) or a G2 200, that should be plenty of motor to go around on a 20' dyne.

    Worst case scenario, you could replace the lower of a 25" to get it to a 20".
     
  3. Pat Colvin

    Pat Colvin Hydrodyner

    Joined:
    Sep 20, 2016
    Messages:
    50
    Boat Model and Year:
    it is a Hydrodyne but not sure what year just boug
    thank you i am in Canada West Coast close to Oregon i am doing a total resort on the 18 foot Hydrodyne i have a new 3 inch transom, stringers, floor, now on to the interior, then external paint or regelcoat with color, most of what i see here is a 25 inch and i am told that is not good on a Dyne.
     
  4. RiverRat

    RiverRat Hydrodyne 18 Specialist

    Joined:
    Sep 30, 2006
    Messages:
    503
    Location:
    Shoreview, MN
    Boat Model and Year:
    1971 Baby Dyne
    Ski Team:
    Twin Cities River Rats
    I should state that I am not sure if the Rock Aqua Jays use 20" or 25" lower units. They have jack plates, that is all I know.

    On an 18' dyne, a big block 200 is plenty sufficient. If you really want something bigger, go for it. It could be fun, or it could be a nightmare. As far as getting the weight another 5" higher on an 18' dyne, I would not do it. But mine has been upside down from doing around the boat with 3 guys and a 200HO. I am down to a 150HO now, and it is sufficient, but not as fun.

    I know in Minnesota, Wisconsin, and Illinois, there are quite a few 20" lower unit Evinrudes available every fall. Everything from 150 to 250HO typically. There should be some G2's popping up as well. If you are willing to pay for shipping, I would bet you could still get a reasonable price on an appropriate motor for your boat. Most of the ski teams around here use Evinrude. Many of those teams rotate their motors every year or two. The motors will still have some warranty (depending on how long they were used by the team, and how their program is set up). I am not sure if the warranty would transfer into Canada though. I am also not sure how the taxes and shipping would work with going into Canada.
     
  5. Pat Colvin

    Pat Colvin Hydrodyner

    Joined:
    Sep 20, 2016
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    50
    Boat Model and Year:
    it is a Hydrodyne but not sure what year just boug
    thank you for all the info the project is much more then i was expecting but has been fun, so when it is ready for the water i want it to hall ass,, thanks again take care
     
  6. RiverRat

    RiverRat Hydrodyne 18 Specialist

    Joined:
    Sep 30, 2006
    Messages:
    503
    Location:
    Shoreview, MN
    Boat Model and Year:
    1971 Baby Dyne
    Ski Team:
    Twin Cities River Rats
    And haul ass it will.

    The real fun part about these boats is not necessarily the speed. It is the handling. And that handling is greatly improved with as low of a center of gravity as possible.
     
  7. jim

    jim Hydrodyne 18 Specialist

    Joined:
    Jun 14, 2006
    Messages:
    2,294
    Location:
    FL
    Boat Model and Year:
    77 Dyne 18 I/O converted to Outboard
    I agree about the high cg. I use a real light 150, it will pull your arms off.
     
  8. Pat Colvin

    Pat Colvin Hydrodyner

    Joined:
    Sep 20, 2016
    Messages:
    50
    Boat Model and Year:
    it is a Hydrodyne but not sure what year just boug
    ok ty all i am just in the process of putting the motor well back on the boat the boat then new carpeting or better then seating, gauges, wiring and new custom fuel tanks so boat will not hit the water until the spring with the Johnson 115 V4 that i have until i find the new motor thanks again all
     

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