Flat Earth's circumfence according to the FAQ is 78225 miles. With one revolution per 24 hours (FE spins according to
this model) the ice wall at the edge of the Earth is travelling at about 3260mph (5244km/h). That's over three times faster than the speed of the equator in RE. From that funny anecdote we can leap straight to the gigantic centrifuge matter.
On RE a weight of an object is about 0.5% lighter at the equator than on the north pole, partly because spinning RE acts as a centrifuge. Another reason adding to this phenomenon is that equator is further away from the mass center of the Earth than the north pole, but that's another story. And no, you don't have to go to the north pole in order to measure this. It's quite sufficient to go to some area along the arctic circle, like Iceland, Norway, Siberia, Alaska, Canada etc., and then go to the equator to do a comparison. Difference will be a little smaller, but it is there. You should also be able to notice a difference of 0.2% in objects' weight even within the US borders. More info on the subject:
http://en.wikipedia.org/wiki/Acceleration_due_to_gravityhttp://www.space-electronics.com/Literature/Precise_Measurement_of_Mass.PDFOf course you won't be able to measure such differences in weight on FE, because g is constant in the FE theory. But FE being a large spinning disc, creating even larger centrifuge than RE, you should be able to measure differences in forces needed to travel in the south north direction. If you were on the ice wall at the edge of the Earth, pulling a 100kg load in a sled to north would be about 1kg heavier than pulling the same sled south. Of course I can't expect anyone to go to the ice wall and measure this, but the difference should be quite measurable in Cape Horn in Chile, and probably also in South Africa, Australia and New Zealand. Anyone willing to try this?