1978 18' Restore Project

Discussion in 'Restoration Projects & Questions' started by dgunn71, May 12, 2019.

  1. dgunn71

    dgunn71 Hydrodyner

    Joined:
    Oct 26, 2011
    Messages:
    15
    Boat Model and Year:
    Hydradyne I/O 1971
    Ski Team:
    None
    I now have a second Hydrodyne to go with my '71 20 foot skier; a '78 18 foot. The new boat's fundamentals look like it was well cared for so the restoration part has involved light work so far. I do have a couple of parts questions: I have been unable to find the windscreen/deck seal of the proper size. Taylor's 846500 seems to be the only one readily available and it is much larger then the original. Has anyone found a suitable replacement? The second issue is a broken roller arm on the interrupt switch. After learning that the system was redesigned with the roller arm switch no longer available I finally located a use one on eBay.
    Has anyone found a source for just the arm and roller assembly?
    Thanks.
     
  2. kevinb

    kevinb Elite Hydrodyner

    Joined:
    Sep 10, 2006
    Messages:
    442
    Location:
    Brookfield, WI
    Boat Model and Year:
    75 HD 18' I/O SOLD & 1985 HD 20' (Boat #2) I/O 350
    Ski Team:
    NA
     
  3. kevinb

    kevinb Elite Hydrodyner

    Joined:
    Sep 10, 2006
    Messages:
    442
    Location:
    Brookfield, WI
    Boat Model and Year:
    75 HD 18' I/O SOLD & 1985 HD 20' (Boat #2) I/O 350
    Ski Team:
    NA
    I'm no expert (well I guess I know a little about these hulls) but I think the Hydrodynes 20 was a product of the 1980's. There are several builds on this site and the first generation had the instrument cluster as a pod that was screwed this the top deck, and the 1985 or later was included in the top deck mold. Let's see some pics of the 1971 20 Please .
     
  4. dgunn71

    dgunn71 Hydrodyner

    Joined:
    Oct 26, 2011
    Messages:
    15
    Boat Model and Year:
    Hydradyne I/O 1971
    Ski Team:
    None
    Hi Kevin, the brochure with my '71 refers to it as a 20' boat.
     
  5. dgunn71

    dgunn71 Hydrodyner

    Joined:
    Oct 26, 2011
    Messages:
    15
    Boat Model and Year:
    Hydradyne I/O 1971
    Ski Team:
    None
    The instruments on the '71 are individually installed on the dash area. On the '78 they are installed in a screw on panel.

    The windscreen instructions with the '78 call for the 826500 seal. The one actually on the boat is about half the cross section size and a better fit to the hull.

    I did buy and interrupt switch on eBay and transferred the arm/roller over to my switch.
     

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