170 knots is about the max speed for that bird. I only get about 155-160 TAS from the Longbow, which is about right. Does not hardly pick up speed downhill at all, which is wierd. A little slow in the climb.
The real reason most choppers are not "really fast" has to do with retreating blade airspeed. Somewhere between loss of lift on the retreating blade and mach drag rise on the advancing blade some interesting control and drag issues arise.
Actually is not really a Jolly Green, but a Sea Stallion. I flew the RTW stuff in the default 206, which is really slow, but was all I had at the time. So much for RTW prep!
T.