Recent content by fpjeepy

  1. fpjeepy

    When the world doesn't understand energy and power

    Mainstays 512841 $10 from Walmart There is a long 10 or 12 gauge cord that runs to the shed. Inside I have a few lighter cords and power strips that it is running though. I haven't tried moving it around to see if the power strips are causing the issue. I'm not an electrician, but at this...
  2. fpjeepy

    When the world doesn't understand energy and power

    Maybe you guys can help me figure out what I'm looking for... I have a worksite office that runs off an extension cord. The coffee maker pulls enough power when it turns on that it flickers the light. I am looking for an AC equivalent to a DC inductor. Basically I would like a device that when...
  3. fpjeepy

    Simplified Tapered Cantilever Beam Generalizations

    Most of them work with little noticeable difference. Imperfections in the plywood seemed to be a bigger determining factor.
  4. fpjeepy

    Simplified Tapered Cantilever Beam Generalizations

    I looked in Roark's Formulas and didn't find anything. Basically, I design parts that need to bend. Mostly plywood and plastic. Mostly cantilever beams. I like to taper the beams so that the stress along the beam is more uniform. The question I have is how much do I taper. With no taper, the...
  5. fpjeepy

    What forces cause a surfboard to turn?

    They do? :wideeyed:
  6. fpjeepy

    What forces cause a surfboard to turn?

    I like it. So if the center of the lift force is forward of the center of mass the "outwardly" component will create a torque rotating it. The harder the rail/chine the move lift at the edge of the board... the further the board can lean... the larger the turning torque.
  7. fpjeepy

    What forces cause a surfboard to turn?

    Summary: Leaning on an edge of a surfboard will cause it to "carve" in that direction. But why? I was a little bummed there is not a Marine Engineering section, but there is an Aeronautical Engineering section. :frown: The term carving describes turning on a surfboard. It is a roll + pitch or...
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