Is there anyway to correct the flutter and shake problems in FS2004 helos that occurs over 120 or 125 knots?Thanks all, Rob

Yup...SLOW DOWN.The Vne (never exceed speed) in helicopters is typically quite a bit lower than a fixed-wing aircraft with equivalent horsepower - for instance, the venerable Hiller helicopters have a Vne of something like 65 or 70 knots, and the Schweizer 300 that I trained in has a Vne of 94 knots - not very impressive and as a rule helicopters are not a very economical way to get from point A to point B. Their value lies in other, specialized applications that we are all familiar with.Even high-performance military helicopters have a relatively low speed limitation as compared to even medium-performance airplanes - I think the Apache can do 170 knots on a good day. An exception is the British Lynx, which I believe can do over 200 (240? - it has a unique rotor blade/system design), and the Tiger can also go *real fast*.The speed ceiling for all helicopters is mostly due to an inherent limitation in helicopter aerodynamics, known as retreating blade stall. (Remember that a helicopter rotor blade is just a wing that is spinning around at a high RPM.) Past a certain speed, the rotor blade that is spinning "back" w.r.t. the aircraft's direction will stall as a result of its speed as compared to the "relative wind" passing over it. This causes the airframe to want to "tuck in" towards the stalling side (left side in all American helos; right side in British and Russian ones). This is not fun and pilots try really hard to avoid it 8^) .That is probably more answer than you expected, and I hope I got it all right 8^) . It's late here and I'm on my 2nd glass of wine.Dave Blevins

Thanks! Very informative and educating reply, I appriciate it alot!Thanks again, Rob