"Chris W" wrote

I have no clue if I am right but I always thought that stepping on the
pedals would be similar to a situation where you had a stick for each
rotor and moved them in equal and opposite directions. How that is done
mechanically I don't even want to think about.

I don't think so.

Banking a chopper with a stick tilts the mast because of the offset of
thrust on the one side. That causes the turn. To do so in opposite
directions with a tandem rotor would only try to twist the fuselage, and not
end up with any bank to cause a turn, assuming the you don't twist the
fuselage in two. g
--
Jim in NC