Thornycroft style steps

Discussion in 'Boat Design' started by gonzo, Feb 1, 2010.

  1. gonzo
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    gonzo Senior Member

    Has anyone seen any modern examples of the Thornycroft stepped design. I mean the one that had a sort of huge trim tab behind the step.
     
  2. frank smith
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    frank smith Senior Member

    Like this ?

    [​IMG]
     
  3. gonzo
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    gonzo Senior Member

    Yes, but on new designs
     
  4. frank smith
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    frank smith Senior Member

    Gonzo , It is interesting how the old way of doing thing is coming back.
     
  5. gonzo
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    gonzo Senior Member

    The interesting aspect was the large scoop like a trim tab behind the step, but all under the hull.
     
  6. frank smith
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    frank smith Senior Member

    how did it work?
     
  7. gonzo
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    gonzo Senior Member

    The data shows good performance. The boats were built with rather flexible hulls to absorb pounding and disipate the energy. They were reported to have a nice ride for the speed. I would give a leg ( someone's not mine) to go for a ride on one.
     
  8. Knut Sand
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    Knut Sand Senior Member

    Seen better here, I think....

    http://images.google.com/imgres?imgurl=http://static.rcgroups.com/forums/attachments/1/6/3/0/1/4/t2108092-102-thumb-m_7Thornycroft%252055'%2520C.jpg&imgrefurl=http://www.rcgroups.com/forums/showthread.php%3Ft%3D935447&usg=__-gmZJt3Y-F_GFjWSGbTddNtMG3A=&h=150&w=200&sz=8&hl=no&start=289&itbs=1&tbnid=LJp265PC1CYclM:&tbnh=78&tbnw=104&prev=/images%3Fq%3DThornycroft%26ndsp%3D18%26hl%3Dno%26sa%3DN%26start%3D288

    Now that was a link...! :eek:

    The mother of all stepped hulls....
     
  9. gonzo
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    gonzo Senior Member

    Very nice. I didn't realize at first it was a model
     

  10. yipster
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    yipster designer

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