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    Wellcraft Nova platform Mod - Venting? Thoughts - also gunwale repair/mod
    #1
    Registered HiZ's Avatar
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    Okay rocking with a Nova ST and the platform is well. There
    I am torn on liking the platform so I guess it stays.
    I will be taking it off to put on exhaust and will need to cut it for the Exhaust exit
    I know reversion reversion reversion. I am on that. BUT

    We were out over the weekend and I noticed that the platform really needs to be vented to let that air pocket out when in waves
    You can feel the entire deck move when the transom comes down on a wave

    I was trying to think of some type of vent/slot/hole that could go in the back edge or corners to vent this thing
    Might just take care of reversion issues and really will deal with the pressure of "holding" up the transom on waves

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    #2
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    Click image for larger version. 

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    Anything coming to mind?
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    #3
    Charter Member old377guy's Avatar
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    Well, reversion has to do with injected water being pulled back into the engine by negative pressure pulse overlap (my term). Water backing up into your exhaust tips can be reasonably addressed by tip flaps. I've seen a few manufacturers (I don't remember who or what models) address platform "slapping" by incorporating 2 or 3 grates on the surface. These grates can do double duty as service access/inspection ports in case you need to reach down and remove a twig or whatever caught on the drive or in the props. Good luck
    People we meet in life are either a Blessing or a Lesson
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    #4
    Charter Member phragle's Avatar
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    Raise it 6" so its level with the top of the transom, rename it a "bussle" and it should easily add 20+ mph to your top speed and increase the boat's value by 34.285%
    P-4077 "The Swamp" S.B.Y.C. and Michigan medboat mothership
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    #5
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    Quote Originally Posted by phragle View Post
    Raise it 6" so its level with the top of the transom, rename it a "bussle" and it should easily add 20+ mph to your top speed and increase the boat's value by 34.285%
    You GYPSY!
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    #6
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    Quote Originally Posted by old377guy View Post
    Well, reversion has to do with injected water being pulled back into the engine by negative pressure pulse overlap (my term). Water backing up into your exhaust tips can be reasonably addressed by tip flaps. I've seen a few manufacturers (I don't remember who or what models) address platform "slapping" by incorporating 2 or 3 grates on the surface. These grates can do double duty as service access/inspection ports in case you need to reach down and remove a twig or whatever caught on the drive or in the props. Good luck
    Roger that I have a set of tips that will take care of that issue I just want the thing to be white guy approved.
    I like negative Pressure pulse overlap system dynamics, seems rather catchy. Like that new Daft punk song
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    #7
    Founding Member / Super Moderator Ratickle's Avatar
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    You should really think about converting to a tube platform if you want to stop the slapping.
    Getting bad advice is unfortunate, taking bad advice is a Serious matter!!
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    #8
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    I would say an insert of some sort if not going the tubular route as mentioned...
    Neighbor's Sea Ray had a nice big "vent" in it's center with their logo or something like this one...

    or an aluminum insert with milled slots set in...
    Attached Thumbnails Attached Thumbnails Sea%20Ray%20210%20Sun%20Deck%201f.jpg  
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    #9
    Founding Member fund razor's Avatar
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    white guy approved.
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    #10
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    Quote Originally Posted by Ratickle View Post
    You should really think about converting to a tube platform if you want to stop the slapping.
    Just build one and it turned out nice.
    Hence the powder coating prop question when he asked
    I just like to keep this old bird somewhat original I guess.......
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    #11
    Founding Member / Super Moderator Ratickle's Avatar
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    You can stash the platform in case you want to put it back on. But for the exhaust and low flight landings, the tube one will last and not break the boat...
    Getting bad advice is unfortunate, taking bad advice is a Serious matter!!
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    #12
    Charter Member old377guy's Avatar
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    And of course we all ignore Paul's wisdom at our own peril
    People we meet in life are either a Blessing or a Lesson
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    #13
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    Quote Originally Posted by Ratickle View Post
    You can stash the platform in case you want to put it back on. But for the exhaust and low flight landings, the tube one will last and not break the boat...
    Yeah, Tube is the way
    I was just contemplating it and looking at the thing today
    What to do or not, but I think that tubes are going to be it........
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    #14
    Founding Member Bobcat's Avatar
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    There is a 28' Powerquest near you that has a nice platform....
    Parabellum FJ²B
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    #15
    Charter Member old377guy's Avatar
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    Quote Originally Posted by Bobcat View Post
    There is a 28' Powerquest near you that has a nice platform....
    As nice a "platform" as the girl on the beach yesterday?
    People we meet in life are either a Blessing or a Lesson
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    #16
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    Quote Originally Posted by Bobcat View Post
    There is a 28' Powerquest near you that has a nice platform....
    I NO see
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    #17
    Founding Member Bobcat's Avatar
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    Near Appleton...
    Parabellum FJ²B
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    #18
    Founding Member / Super Moderator Ratickle's Avatar
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    If you have the talent to build a tube platform, and you have a friend who will powdercoat it for a reasonable price, that's the way I'd go in a heartbeat. You could even make it two small ones, one each side, and leave the middle open if it works for your exhaust.
    Getting bad advice is unfortunate, taking bad advice is a Serious matter!!
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    #19
    Founding Member / Super Moderator Ratickle's Avatar
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    How much to build me one ??????
    Getting bad advice is unfortunate, taking bad advice is a Serious matter!!
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    #20
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    Quote Originally Posted by Ratickle View Post
    You should really think about converting to a tube platform if you want to stop the slapping.
    So bringing this back alive!

    I'm going for the Tube and it's the end of the season so Pull this thing off! Right!?!
    Wrong

    All bolts out and I'm assuming that they used 5200 to fasten it to the transom
    SO, guess what!

    Any advice on how to diffuse the adhesive
    We have tried pressure, jacks, leverage, wedges?
    Short of cutting it off with a chain saw and grinding the rest down I'm kind of at a loss
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