New, new and new

Discussion in 'Metal Boat Building' started by yofish, May 1, 2014.

  1. yofish

    yofish Previous Member

    In the water, GPS mph:

    4,000 rpm - 29.7 mph

    5,200 rpm - 40.4 mph needs some weight forward to get to full throttle (6,200) not enough bottom in the water, I didn't feel comfortable going higher. My guess is she'll peg at somewhere a little under 50.

    Overall, I'm quite pleased.

    Here some pics to wrap this show up. Thanks for the interest and the comments.

    If anyone is interested in building one, I have plans and cut files for sale and am working on a construction guide. My email is

    Attached Files:

  2. Kevin Morin
    Joined: May 2013
    Posts: 83
    Likes: 10, Points: 0, Legacy Rep: 72
    Location: Kenai, AK

    Kevin Morin Junior Member

    Looks good- questions questions questions

    Yofish, Nicely done.

    She looks great!

    I see the flat wise lay of an angle inside, above the rod shelf, took out the side wrinkle and left her fair. Do you think it was necessary to weld the entire rod shelf? Or could some of the side panel contraction have been avoided by stitching that long to the side?

    Now that she's afloat, how did the Prosurf provided bottom frame, convex curves work out? Any adjustments there? Or, did the program give a good set of curves for the bottom panels to form fit?

    I know the first one of a series can take more time to get worked out but how did you come in with your guestimated hours? Pretty close to your ideas going in?

    Will the owners etch her? or will the mill scale remain on the hull? Are they going to stand out in the wind or is some windscreen planned?

    Looks good, thanks for posting.

    Kevin Morin

  3. yofish

    yofish Previous Member

    Thanks Kevin, your thumbs up means a lot. And thanks again for you input that moves the craft along as a whole and not just specific to a particular - that is what it's all about, you are to be commended. This is my first effort at broadcasting and I've learned by it how much effort you've put into teaching. I can only admire that and will endeavor to imitate.

    I'm so bummed I had to put that angle in; it looks awful to me and I'll do anything in the future to obviate the need for it. I about puked when I discovered the problem. If the sides were .190, there would be no problem (I think), along with a different welding schedule or method perhaps.

    I cannot say enough good things about ProSurf. The ONLY glitch with the bottom panels/longs/frames was my welding schedule where I failed to tack a long down enough and after welding two sets of frames the bottom moved away - MY FAULT! Otherwise, it was flawless.

    I have about 120 hrs in her not including, of course, all the agony of design which should be spread over (hopefully) many copies in order to actually make some kale. There was a bunch of fussing, as you can imagine, over little things that are now resolved thus making the way forward easier.

    The owners are going to blast the bottom and paint 235/antifouling. That's it. In my experience, not too far down the road, some sort of weather protection will be discussed. Then begins the compounding of compromises that plagues small boat design. To wit, included is my favorite picture of the ultimate planing hull - maybe not of the perfect aspect ratio but the perfect hull configuration (not one compromise), no negative effects from whisker spray and economical to build!! Like modern aircraft, one could make an axe blade 'plane' by supplying enough horsepower and the controls to manage it.

    Attached Files:

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