Oh, and if you try that trick on the R44 your going down quick!.....They have NO power left once you get to red line!
Tosh. The 44 has a stack of power that isn't used - just read the POH. As has been said above, the red line is there for a reason and it isn't a lot to do with the engine. However, the 2200hrs of life is based on operating within manufacturer limits.
It's a question of whether you care enough about the next people to get in the heli. And the next. And the next. Most overspeeds, overstresses and exceeding of limits don't show up for a few more hours.
ELT2GO : are you really a pilot ? Your thought process is somewhat worrying.