questions

Discussion in 'Hydrodyne® Boats' started by Pat Colvin, Sep 27, 2016.

  1. Pat Colvin

    Pat Colvin Hydrodyner

    Joined:
    Sep 20, 2016
    Messages:
    51
    Boat Model and Year:
    it is a Hydrodyne but not sure what year just boug
    hi, i just brought home the Hydrodyne project that i bought and will start working on it in a day or two. questions,
    1 there is two of the original speeds on the dash exactly the same and two broken speedo senders on the transom, why would there be two speedos?
    2 i need to replace the transom there are two large cracks in the skin on each side of the 115 evinrude outboard on the outside, almost looks like it may have torqued to much. there is a quarter inch aluminum plate that the motor bolts through, size 14" w by 12" l, the transom feels solid when and sounds solid,not sure why it has the damage, will replace and build a stronger transom, any thoughts, ty
     
  2. kevinb

    kevinb Elite Hydrodyner

    Joined:
    Sep 10, 2006
    Messages:
    437
    Location:
    Brookfield, WI
    Boat Model and Year:
    75 HD 18' I/O SOLD & 1985 HD 20' (Boat #2) I/O 350
    Ski Team:
    NA
    Hi Pat:

    Do not want to steal your thread but the two speedos with pitots were a redundant approach to always have one reading hopefully accurate while the other could acquire a weed or debris across the pickup (they are constructed as pressure gauges afterall). I replaced mine as designed with transom pickups but have seen that there are GPS integrated speedos now available for a little less than $200.

    http://www.ebay.com/itm/301426150257?ssPageName=STRK:MESINDXX:IT&_trksid=p3984.m1436.l2649

    Although not Perfect-pass for course skiing (which these hulls are a minus for course handling and speed management and the magnet senders in the hull would never equal a true inboard), do we need more than one GPS speedo? This is poised as a question out of curiosity abd not from experience from the community as I have "0" experience and would tend to have one old school with pitot and one GPS for recrational water sports.

    If you have two dash voids to fill, maybe one as a transom pickup but if the gps integrated or both gps performing, so you could seal those holes up in the transom. any one else have an opinion on the current gps speedos available?

    Kevin-
     
    Last edited: Oct 2, 2016
  3. Pat Colvin

    Pat Colvin Hydrodyner

    Joined:
    Sep 20, 2016
    Messages:
    51
    Boat Model and Year:
    it is a Hydrodyne but not sure what year just boug
    thank you for the info and help on this i may look into the GPS Speedo and leave the originals thanks again
     
  4. Tom_H

    Tom_H Hydrodyner

    Joined:
    Jun 4, 2013
    Messages:
    40
    Location:
    White Bear, MN
    Boat Model and Year:
    1994 Grand Sport
    Ski Team:
    Ski Otters
    If you're going to drop in a GPS speedo, and are doing watersports, I'd grab the one Perfect Pass makes, as it has a faster refresh rate than most of the other GPS variants and also reads out in tenths. I would also keep one of the analog speedometers, as you'll have a back-up, and also a more accurate over the water speed if you're on a river with a current.
     
  5. Must-Ski Motors

    Must-Ski Motors Hydrodyne 20 Specialist

    Joined:
    Sep 1, 2006
    Messages:
    512
    Location:
    Beaver Dam
    Boat Model and Year:
    2008 Dyna-Ski 20' Open Bow, 3.4L 250 HO
    Or just put a smartphone holder in and use a GPS speedo app and keep your analog speedos for reference.
     
  6. kevinb

    kevinb Elite Hydrodyner

    Joined:
    Sep 10, 2006
    Messages:
    437
    Location:
    Brookfield, WI
    Boat Model and Year:
    75 HD 18' I/O SOLD & 1985 HD 20' (Boat #2) I/O 350
    Ski Team:
    NA
    Hey Must-ski:

    Would agree if in an area with service and trying to get by, but the northwoods of WI (and I would assume many dead spots in Amrica) are not Going to work with a smart phone app. Pat, if you are looking for recreational performance for open water, a good GPS based speedo and a pressure gauge backup would suffice. Tom H, what is the going rate for a Perfect pass speedo set up?
     
  7. Must-Ski Motors

    Must-Ski Motors Hydrodyne 20 Specialist

    Joined:
    Sep 1, 2006
    Messages:
    512
    Location:
    Beaver Dam
    Boat Model and Year:
    2008 Dyna-Ski 20' Open Bow, 3.4L 250 HO
    You don't need cell service to run a GPS app on an iPhone. Can use on iPad also with no service.
     
  8. Tom_H

    Tom_H Hydrodyner

    Joined:
    Jun 4, 2013
    Messages:
    40
    Location:
    White Bear, MN
    Boat Model and Year:
    1994 Grand Sport
    Ski Team:
    Ski Otters
    While the phone app will work without cell service, I just prefer not to as my phone's a pos and turning the GPS on kills my battery in short order (and I prefer to have my phone out of sight/mind on the boat). Couple that with the fact that the location of my cigarette lighter isn't real conducive to charging on the fly, and it's just not a real appealing alternative to me without doing some rewiring and adding charging capabilities at the dash. Depending on the phone display, some are also not so easy to read in the sunshine and my display will turn itself off without going 6 menus deep in the settings to change it. Personally, I'd just prefer something that's hardwired into the boat.

    All that being said, it's whatever works best for you and how things are laid out. I know on the outboards, you have a bit more space to work with and there are a lot of easy places to put a phone holder. My boat being an inboard with a walk-through to the open bow doesn't have a ton of extra space in the dash area.

    Kevin - the perfect pass speedo is $350. I've thought about getting it, but my speedos are pretty accurate, so long as my kids stay away from the adjustment knobs.... and I plan to just put in Stargazer somewhere along the way, so didn't want the added costs for a relatively short term benefit. Also, having a direct drive, I can accurately drive off my tach and do so about 90% of the time.
     
  9. Must-Ski Motors

    Must-Ski Motors Hydrodyne 20 Specialist

    Joined:
    Sep 1, 2006
    Messages:
    512
    Location:
    Beaver Dam
    Boat Model and Year:
    2008 Dyna-Ski 20' Open Bow, 3.4L 250 HO
    I get it that it is not everyone's cup of tea. But it is nice reference point to check your analog speedos. And can serve as a stop gap until a permanent solution is installed. I use Speedbox on iphone and the display will not turn off while this app is active.
     
  10. Tom_H

    Tom_H Hydrodyner

    Joined:
    Jun 4, 2013
    Messages:
    40
    Location:
    White Bear, MN
    Boat Model and Year:
    1994 Grand Sport
    Ski Team:
    Ski Otters
    For sure a good reference point, and how I calibrate my speedos. I'll have to check out the speedbox app as the random one I grabbed is pretty slow on the uptake (but could be my phone).
     

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