Original Message

As long as it's turning, the tail rotor never stops producing thrust.  It doesn't cavitate or "stall" or whatever.  It ALWAYS produces thrust.   As long as you fly within limits, the t/r will produce enough thrust to do the job.  Now, there can be fluctuations in t/r thrust, yes.  But just as you can get out of m/r VRS by sliding the disk sideways, as soon as the inflow to the t/r changes...voila...it's back in business doing what it's supposed to do.  If the a/c is going round and round at full left pedal, it's because you're either pulling too much torque (over maximum permissable), or you've allowed your m/r and t/r rpm to droop and you've lost thrust.  Either way, a crash is imminent.  Getting into such a predicament and then blaming the aircraft is the mark of a very poor pilot.