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Thread: nutshell pram mast step

  1. #1
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    Angry nutshell pram mast step

    The very indispensable and well written book, "Building the Nutshell Pram by Maynard Bray" shows positioning the maststep using a level to determine a vertical. This, of course assumes that the hull is horizontal. How do I set the hull level first??

    Bob Runnalls

  2. #2
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    Default Re: nutshell pram mast step

    On a level floor put a straightedge across the boat and measure the same distance to the floor on each side, then chock the boat to that position. Make sure the straightedge is perpendicular to the centreline by having it cross at the same place on each side.
    Money may not buy happiness, but it can buy a boat that will pull right up next to it!

  3. #3
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    Default Re: nutshell pram mast step

    How far into the build are you?

    I just installed the step and waited until i was installing the thwart (mast partners?) before i worried about the angle of the mast.
    Also, keep in mind, its a lug sail - there is room for error by moving the gaff fore or aft, relative the the mast.

    I don't think it's something you need to sweat too much.
    http://forum.woodenboat.com/showthre...9-6-quot/page4
    It's all fun and games until Darth Vader comes.

  4. #4
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    Default Re: nutshell pram mast step

    Quote Originally Posted by surveyor464 View Post
    The very indispensable and well written book, "Building the Nutshell Pram by Maynard Bray" shows positioning the maststep using a level to determine a vertical. This, of course assumes that the hull is horizontal. How do I set the hull level first??

    Bob Runnalls
    Across ways or for and aft.
    If across ways, follow Stillettos instructions, but I would be surprised if you are not building level anyway, how else do you make her symmetrical?

    If for and aft, make a tapered spacer capturing the angle between the boat and straight edge. Then use this to set the perpendicular with your bubbly level to the ford and aft "level" of the boat.
    It really is quite difficult to build an ugly wooden boat.

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  5. #5
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    Default Re: nutshell pram mast step

    You won't need a level floor if you measure and mark back the same distance on each side then put the level across that. You can do the same with a string and a line level fore and aft if you can get reference points on the 2 transoms from your drawing.

  6. #6
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    Default Re: nutshell pram mast step

    Thanks for that. Will do just as you say. However, my concern is leveling the hull fore and aft. Any suggestions.

  7. #7
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    Default Re: nutshell pram mast step

    The boat is finished in the rowing configuration and am now converting to sail.

  8. #8
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    Default Re: nutshell pram mast step

    Quote Originally Posted by surveyor464 View Post
    Thanks for that. Will do just as you say. However, my concern is leveling the hull fore and aft. Any suggestions.
    post #4
    It really is quite difficult to build an ugly wooden boat.

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  9. #9
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    Default Re: nutshell pram mast step

    Looking at plans drawings online it appears that you can get fore and aft level very close by eye measuring up from the floor.

  10. #10
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    Default Re: nutshell pram mast step

    Quote Originally Posted by Gib Etheridge View Post
    Looking at plans drawings online it appears that you can get fore and aft level very close by eye measuring up from the floor.
    Or from the mid thwart and daggerboard case top which are level on the drawing. So stand a straight edge on them and slide it forward to touch the bow. Then use a set square to find the perpendicular.
    Or use a spirit level on the thwart to set her level when propping up the hull on its cradle or trailer.
    It really is quite difficult to build an ugly wooden boat.

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  11. #11
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    Default Re: nutshell pram mast step

    Close enough is good enough I think.
    Level when its sitting in the shed is a lot different to level when its in the water and you're sitting in the back. I'd go with 'aesthetically pleasing' angle.
    It's all fun and games until Darth Vader comes.

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