adam,
cant tell you in the cruise as mr torque says I am still alive (just) but i can tell you that from 6 inch hover that an R22 stops flying around 75% RRPM, the next thing that happens is that the RRPM reduces to below 50% quite quickly at the same time you lose 0.5ft of altitude.
a clue that this is about to happen is that the lever is somewhere near your armpit, also it sounds "a bit funny", and its a bit "shaky"
dont try this at home
regards
CF