Question about freewheels, cogs and flip flop hubs

[Trek420]

(Mind you, I didn't build the ss/fixie flip-flop sitting here in my living room; but I've always assumed the freewheel mechanism was the "flip" part of the "flip-flop" hub. Which makes it possible to switch from ss to fixie so simply.

Yes it does. But I've been instructed by Chris at Robinson Wheelworks (hi Chirs!) who built the bike not to flip the flip flop.

Mixte's have a lower center of gravity/bottom bracket making it perilous. If you turn your fixie mixte and just happen to have the inside crank heading down at the apex of the turn So don't flip the flip flop.