Scaled down version Atkins rescue minor

Discussion in 'Boat Design' started by licensedtochill, Mar 14, 2022.

  1. licensedtochill
    Joined: Apr 2009
    Posts: 12
    Likes: 1, Points: 3, Legacy Rep: 11
    Location: georgia

    licensedtochill Junior Member

    Interested in building a scaled down stitch and glue of the rescue minor.
    Any issues that might arise if I scale it down to 12ft length with a 3ft bottom width and 13hp engine ?
  2. messabout
    Joined: Jan 2006
    Posts: 3,331
    Likes: 470, Points: 83, Legacy Rep: 1279
    Location: Lakeland Fl USA

    messabout Senior Member

    Yes, many issues arise when scaling ether down or up. A general rule of thumb is to avoid any scaling that exceeds 10%. Even that difference can, in some cases, be the cause of disappointment. You can use the general idea for reducing the size of Rescue Minor, but not by merely scaling the measurements of the various parts.

    A twelve footer with a three foot bottom will not need more than 3 or 4 HP to make it go nicely. Weight will be a critical matter for a twelve foot boat with a bottom so narrow. It is uncertain whether behavior of the tunnel on RM can be duplicated on so small a boat as you mention.

    I have ridden around aboard a full sized RM that ran at very good speed while powered by a 16 HP Kubota tractor engine.
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