Originally Posted by robschonk
Quiturbitchin posted some fairly simple fowler flaps on another thread using Robarts hinges.
Yep, that's the idea, great job!
Actually those are closer to the "slotted flaps" shown in the diagram. To turn those into simple Fowler flaps, the Robard hinges would have to be longer (or something long and homemade would have to be fabricated) so that the flaps moved farthe back as they deployed; and a sort of "roof" made (say) of thin plywood would have to be glued to the top of the wing, extending over the flap.
But he's definitely on the right track.