1) It's a chronograph (timer), very handy for timing warm up and cool down periods as well as the length of flight time for fuel and navigation purposes and ESSENTIAL when flying under instrument conditions.
2)Turbulence/dissymmetry of lift in the tail rotor. All helicopters do that. The R22 is particularly notorious for it (watch my R22 flight video on my YouTube page). Fighting it with pedal input will just wear you out (and usually make it worse). My feet barely move on the pedals. Flying helicopters is all about applying PRESSURE on the controls, rather than actually MOVING them. If you move a control a measurable degree you will usually get a drastic response. All the little bouncy wobbles you get in flight go largely ignored or you will wind up "chasing" the aircraft all over the place. Rather, the pilot must observe TRENDS in the flight behavior rather than chase the little ups and downs and yaws. It's really quite a natural and fluid feeling when you are up there though.
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...but why are the doors on? :P

