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  1. #1
    Join Date
    Aug 2009
    Location
    Vancouver WA
    Posts
    1,111

    Default Custom Surf Platform build

    I thought I'd post a formal thread on this project.

    My buddy "Phathom" (Desi) is doing the work, and together we've been doing lots of planning and measurements. Our objectives have been to get something with a SMOOTH bottom that doesn't have a huge lip that digs into our surf wave. We also wanted something that was as narrow as possible relative to the surf wave without changing the platform bracket location. We chose to add a little length to it to make it more user friendly.

    Here's how it's looking so far:

    Still have to sand down more(possibly) and coat the bottom. It's all cut, sanded and coated on the top. It is measuring 62" at transom, 14.5" deep the brackets, 13 3/4" long angled transition, and a 43" wide platform end that measures about 23 7/8" long transom to platform end all at 7/8" thick.
    It's made out of two pieces of plywood sandwiched together, because that's the wood we had laying around. Spray on undercoating to cover it, again because we had it laying around. If we like it, we'll make one out of a single thicker piece of wood, glass in the wood and put some closed cell foam decking pad on it.

    My outer brackets were pretty wide, so we did what we could on width as I didn't have much of an interest in moving them or making new ones. (thanks for the welding offers though). I should have to cut off about 1.5" of the extisting outer brackets though. But it's the flat bar before the angle brace comes in, so it shouldn't affect things much. Not sure if we'll have to shim the new platform up or if it'll be thick enough to match the height of the existing as is.



    I did a drawing of the dimensions. The platform brackets are in orange. they overlap our platform a tiny bit on the sides, but should we go with a full blown version, it'll be easy enough to chop 1.5" off the ends of the brackets that extend past the angle brace as mentioned above.



    Pictures of the OEM Platform for reference:



    2008 Moomba Mobius XLV. Monster Cargo Bimini, and more mods to come...

    1992 Supra Sunsport. **SOLD** 2k pounds ballast, Surf System, Blue LED's everywhere, decent audio system.


    Tow Rig: 2013 F150 Ecoboost FX4 (wife's rig) Other money pits include:1998 BMW M3 Cabriolet, 2002 Audi S6 Avant, 2005 Kawasaki ZX-6R 636.

  2. #2
    Join Date
    Aug 2009
    Location
    Vancouver WA
    Posts
    1,111

    Default

    More pics of the OEM platform







    2008 Moomba Mobius XLV. Monster Cargo Bimini, and more mods to come...

    1992 Supra Sunsport. **SOLD** 2k pounds ballast, Surf System, Blue LED's everywhere, decent audio system.


    Tow Rig: 2013 F150 Ecoboost FX4 (wife's rig) Other money pits include:1998 BMW M3 Cabriolet, 2002 Audi S6 Avant, 2005 Kawasaki ZX-6R 636.

  3. #3
    Join Date
    Aug 2009
    Location
    Vancouver WA
    Posts
    1,111

    Default

    Oh, and this pic shows where the water line was and how the platform was cutting into our surf wave.



    I have a video that shows the platform. I had to upload it to youtube because the site I had it on before isn't working. The link will be:
    http://youtu.be/36X8WtKvCm8
    2008 Moomba Mobius XLV. Monster Cargo Bimini, and more mods to come...

    1992 Supra Sunsport. **SOLD** 2k pounds ballast, Surf System, Blue LED's everywhere, decent audio system.


    Tow Rig: 2013 F150 Ecoboost FX4 (wife's rig) Other money pits include:1998 BMW M3 Cabriolet, 2002 Audi S6 Avant, 2005 Kawasaki ZX-6R 636.

  4. #4
    Join Date
    Aug 2009
    Location
    Vancouver WA
    Posts
    1,111

    Default

    Build Pics







    2008 Moomba Mobius XLV. Monster Cargo Bimini, and more mods to come...

    1992 Supra Sunsport. **SOLD** 2k pounds ballast, Surf System, Blue LED's everywhere, decent audio system.


    Tow Rig: 2013 F150 Ecoboost FX4 (wife's rig) Other money pits include:1998 BMW M3 Cabriolet, 2002 Audi S6 Avant, 2005 Kawasaki ZX-6R 636.

  5. #5
    Join Date
    Aug 2009
    Location
    Vancouver WA
    Posts
    1,111

    Default

    Comparison Pics



    2008 Moomba Mobius XLV. Monster Cargo Bimini, and more mods to come...

    1992 Supra Sunsport. **SOLD** 2k pounds ballast, Surf System, Blue LED's everywhere, decent audio system.


    Tow Rig: 2013 F150 Ecoboost FX4 (wife's rig) Other money pits include:1998 BMW M3 Cabriolet, 2002 Audi S6 Avant, 2005 Kawasaki ZX-6R 636.

  6. #6
    Join Date
    Aug 2009
    Location
    Vancouver WA
    Posts
    1,111

    Default

    Installed last night for prototype testing today





    2008 Moomba Mobius XLV. Monster Cargo Bimini, and more mods to come...

    1992 Supra Sunsport. **SOLD** 2k pounds ballast, Surf System, Blue LED's everywhere, decent audio system.


    Tow Rig: 2013 F150 Ecoboost FX4 (wife's rig) Other money pits include:1998 BMW M3 Cabriolet, 2002 Audi S6 Avant, 2005 Kawasaki ZX-6R 636.

  7. #7
    Join Date
    Aug 2013
    Posts
    14

    Default

    Just for the record, yes we know it is OSB, not traditional plywood, and yes we know that the dual 7/16" layers will separate over time, and yes we know that just the undercoating will not prevent this or 100% stop the moisture.
    This is just to test and finish the season out to see if we should pursue a more expensive single sheet marine plywood fiberglassed version with pad and probably grab rails.
    If we do make that, we figure we will have materials enough to make two, so one will most likely end up for sale on here for anyone who likes the idea and wants one too without the labor.
    I am currently waiting at the boat ramp for Trayson to get here to test this sumbyatch out and here he is posting a build thread lol.
    Will post pics of the results of todays testing soon... If he gets here before dark.
    Last edited by phathom; 09-28-2013 at 09:59 PM.

  8. #8
    Join Date
    Aug 2009
    Location
    Vancouver WA
    Posts
    1,111

    Default

    Test was successful. Only the tip of the corner was in the water and there was little to NO interference with the surf wave. The brackets being a little in the water is unavoidable and any turbulance from that seems to be going straight into the prop wash.

    Bottom line is that the new platform did NOT interfere with the surf wave and we felt like we had an increase in push and maybe even a little more pocket. I forgot my waterproof cam, so I couldn't post any vid looking at the boat from the surfer's point of view. But we got as good of pics as we could from the back of the boat.

    As soon as Desi gets them uploaded, we'll share them here.

    At rest in semi rough water:
    2008 Moomba Mobius XLV. Monster Cargo Bimini, and more mods to come...

    1992 Supra Sunsport. **SOLD** 2k pounds ballast, Surf System, Blue LED's everywhere, decent audio system.


    Tow Rig: 2013 F150 Ecoboost FX4 (wife's rig) Other money pits include:1998 BMW M3 Cabriolet, 2002 Audi S6 Avant, 2005 Kawasaki ZX-6R 636.

  9. #9
    Join Date
    Dec 2012
    Location
    Clark, CO.
    Posts
    587

    Default

    Quote Originally Posted by phathom View Post
    Just for the record, yes we know it is OSP, not traditional plywood, and yes we know that the dual 7/16" layers will separate over time, and yes we know that just the undercoating will not prevent this or 100% stop the moisture.
    This is just to test and finish the season out to see if we should pursue a more expensive single sheet marine plywood fiberglassed version with pad and probably grab rails.
    If we do make that, we figure we will have materials enough to make two, so one will most likely end up for sale on here for anyone who likes the idea and wants one too without the labor.
    I am currently waiting at the boat ramp for Trayson to get here to test this sumbyatch out and here he is posting a build thread lol.
    Will post pics of the results of todays testing soon... If he gets here before dark.
    Just for the record it's OSB oriented strand board Phathom.
    Out of curiosity, why not build it out of 1 inch plastic? Seems easy enough and you know it won't rot.
    1 more thing....i love it
    Function before fashion!

  10. #10
    Join Date
    May 2013
    Posts
    445

    Default Custom Surf Platform build

    Holy crap spendy!!!!!


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