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Thread: New 8' pram

  1. #1
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    Default New 8' pram

    I need a better dingy for Wonderland, the 6' toy boat is not cutting it, and I'd be heartbroken if I lost it.
    So....


  2. #2
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    Default Re: New 8' pram

    The 6 footer could fit on the foredeck at least. This one needs to be towed, so I put more rocker forward than my uisual pram. I also have a plan to soften the hardness of the chine, in hopes of reducing the danger of tripping , sliding down a wave under tow.
    6mm hydrotek bottom and transoms , 4mm hydrotek sides.
    38",40" and 42 inch bottoms for the models, I chose the 42.





  3. #3
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    Default Re: New 8' pram




    The stiffener piece is 3/4 oak flooring, deflecting about 5/8ths of an inch.

  4. #4
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    Default Re: New 8' pram




  5. #5
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    Default Re: New 8' pram

    I want to avoid plywood gussetts and knees, so I'm taking a bit more time and lamming them, and some light full length stringers.



  6. #6
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    Default Re: New 8' pram

    Here is where I want to "soften" the ugly hard chine....
    I dropped in "planks" on each side. The outer part will get cut off latebr />


    This is where we are now after a week. One side cut away, the other the original hard chine
    Last edited by wizbang 13; 05-20-2021 at 10:01 AM.

  7. #7
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    Default Re: New 8' pram

    There is a madcap brilliance to this project that we don't see around here very often. Thanks Bruce!
    Steve

    If you would have a good boat, be a good guy when you build her - honest, careful, patient, strong.
    H.A. Calahan

  8. #8
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    Default Re: New 8' pram

    Quote Originally Posted by stromborg View Post
    madcap brilliance!
    This!

  9. #9
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    Default Re: New 8' pram

    What I can't believe is that after a whole week it isn't painted, in the water, been used, & is now back out for repair of a hole punched in it when he tried a 25HP motor on it.

    Always a treat to see Bruce's builds!
    "If it ain't broke, you're not trying." - Red Green

  10. #10
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    Default Re: New 8' pram



    Here's aclose up of the towing "bitt". A line passes through a bit below the apexorwutthefeckitscalled ,to lift the bow.I do not want an eye bolt or fittin there.
    anyway, yakin see how it werkz

    I'll waterproof it later with beezwax and a heat gun.

  11. #11
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    Default Re: New 8' pram

    The rollocks were delivered today at 1600, we launched at 1700

    oh crap i fergot to give her a scull test. But we rowed her and towed her, shez crankier than the el toro of course, but is quicker with two people rowing. There is no plan to sail her...woudda left the hard chines in fi dat.

  12. #12
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    Default Re: New 8' pram

    Sometimes people ax about my sanding tricks...here is a setup for sanding filets, and remember, I use 403 for filets , which is very hard to sand, literally.

    A simple matter of cutting oversize sanding discs, or cutting old softpads down a bit.
    That looks like a big grinder but it is a VS polisher. Use it at slowslow for this. (<1000rpm )

  13. #13
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    Default Re: New 8' pram

    bote needs more stiffening, gonna put a canoe style grabber thingy in lieu of a thwart. i'm thwarted by the name of the canoe thang.
    my forward row station is too far fwd and the aft is too far aft....fascinating!

    how about those oar buttons? if ya don't know a knot...tie alot!

  14. #14
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    Default Re: New 8' pram

    Great effort Bruce. Tell me, how come the for/aft stringers are so close together and not mid panel? Sidewards that is

  15. #15
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    Default Re: New 8' pram

    Nice boat! Thanks for sharing.

  16. #16
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    Default Re: New 8' pram

    Quote Originally Posted by Andrew Donald View Post
    Great effort Bruce. Tell me, how come the for/aft stringers are so close together and not mid panel? Sidewards that is
    I wanted them to carry a foam seat. Most of the licks on our ancient el toro happen therish. Bangs from below and above. Plus, we do not have a big choice where lams run sometime, in order to follow a natural curve that requires no beveling.

  17. #17
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    Default Re: New 8' pram

    Do prams tow better than dinghies with a sharp entry? I've never had anything but an inflatable so just dont know...

  18. #18
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    Default Re: New 8' pram

    Nice little pram.
    Very clever how you softened the chines.
    I was born on a wooden boat that I built myself.

  19. #19
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    Default Re: New 8' pram

    "Canoe grabber thingie"...? You thinking of a portage yoke? Great spontaneous build...but you do rather tend toward that, dontcha Thanks for sharing!

  20. #20
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    Default Re: New 8' pram


    portage yolk !

  21. #21
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    Default Re: New 8' pram

    Fun stuff Wiz! Interesting stringers.
    David G
    Harbor Woodworks
    https://www.facebook.com/HarborWoodworks/

    "It was a Sunday morning and Goddard gave thanks that there were still places where one could worship in temples not made by human hands." -- L. F. Herreshoff (The Compleat Cruiser)

  22. #22
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    Default Re: New 8' pram

    Quote Originally Posted by willin woodworks View Post
    Do prams tow better than dinghies with a sharp entry? I've never had anything but an inflatable so just dont know...
    I dunno really, I "never" tow a dingy, cuz it always ends in trouble.
    I built the stringers and heavy tow tie for when the boat sinks/trips/goes awash , when the boat is heavy full of water , don't want to pull the bow off.
    I hate the snatch of dingys when they slip around.
    I usually put the sculling notch over to stbd a bit, being right handed, but put it in the center for towing a small drogue/line/ bucket. I also do not want to rip the stern off.
    Of course we'll work out a plug, a bit of foam...these things.
    I also need bushings for these rollocks, clacking around in the socket
    I can always convert to nesting if it fails.
    Oh, Jan named her "All Skate"!

  23. #23
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    Default Re: New 8' pram

    Looks like it will tow well, I've got a sabot with a lot of dead rise at the transom. Beautiful rowing dinghy but a pig to tow around.. more drag at 5 or 7 knots than much bigger/ heavier dinghies I own and use.
    It sucks, literally.
    Does it track ok without a keelson?
    Last edited by John B; 05-21-2021 at 02:23 PM.

  24. #24
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    Default Re: New 8' pram

    I only towed it behind a skiff in flat water , I’m adding a bit of skeg now .The dink felt very light, holding the towline in my hands .i don’t really like a skeg and we’ll keep it to a minimum,more for dragging

  25. #25
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    Default Re: New 8' pram

    My mo for hard dinghies is to put some stub bilge 'keels' on middle boat back. Strakes really. Saves some beach anguish for that time you drag it, or someone else does.
    When I get really keen I run them out past the transom an inch to save the corner. I was standing my boats up in a rack a lot at the time and that was a real wear and tear saver.

  26. #26
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    Default Re: New 8' pram

    You won't regret the stringers, I had to similarly retrofit the bottom of a ply double kayak that I had built - after several years and as many expeditions, the oil-canning of the bottom panels started to crack them. Wide stringers both patched over the crack and added enough stiffening to stop the oil-canning.

    Rather than a skeg, if you can get hold of some UHMW, you could try that. It's slippery as hell and takes a long time to wear through by being dragged up the beach. Four kayaks later and none have worn through yet.
    Alex

    "The fishermen know that the sea is dangerous and the storm terrible, but they have never found these dangers sufficient reason for remaining ashore.
    - Vincent van Gogh

    http://www.alexzimmerman.ca

  27. #27
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    Default Re: New 8' pram

    Nice Pram Wiz! I don’t know if the soft check me add n will help with keeping the tow straight or not, will be interesting.
    i always try to get the tow line low on the dinghy to help raise the bow, and then either a skeg or an outboard partially lowered to assist in the tail feathering.
    Then it is just adjusting the tow line so the dinghy is just on the backside of the 2nd stern wave.

  28. #28
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    Default Re: New 8' pram

    Love your builds
    Straightforward,ultra quick, no fussin around.
    Awesome!

  29. #29
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    Default Re: New 8' pram

    A dinghy thread and a Bruce thread all at once... heaven!

  30. #30
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    Default Re: New 8' pram

    Man, I don't check the forum for a couple days and Bruce has built a boat. Looking forward to seeing your fixes!

  31. #31
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    Default Re: New 8' pram

    Bump. How goes it?

  32. #32
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    Default Re: New 8' pram

    That hull will tow like a dandy.

    I'm leery of the painter coming over the bow like that. When the mothership is at hullspeed the dink will probably be planing, and might want the tow point lower instead of chafing at the bow rail.
    What color are their hands now?

  33. #33
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    Default Re: New 8' pram

    Quote Originally Posted by Figment View Post
    That hull will tow like a dandy.

    I'm leery of the painter coming over the bow like that. When the mothership is at hullspeed the dink will probably be planing, and might want the tow point lower instead of chafing at the bow rail.

    The painter comes out the bottom. The inside of the boat carries a stopper knot. No tow bolt or metal hardware.
    All Skate is coming along nicely, back in the shop for more fancy laminatin !
    What I normally do in 4 hours with plywood gussets slapped on, is taking its sweet time to lam up slowly.
    Last edited by wizbang 13; 05-26-2021 at 09:42 AM.

  34. #34
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    Default Re: New 8' pram




  35. #35
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    Default Re: New 8' pram

    ah, I missed that. Thumbs-up!
    What color are their hands now?

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