Nah, RC heli's arn't that dangerous, Jason, you need to get into electric gliders, much more fun...and much more expensive!
Still, 400kph straight and level with a model is pretty awesome....
I actually know the guy who holds some of the distance records for RC heli's...They fly them down public (dirt) roads standing out the sun roof to get distance, he went to the york worlds shown in the video below, as did my father....
[youtube]<object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/o4RrR2E1p2k&hl=en_US&fs=1&"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/o4RrR2E1p2k&hl=en_US&fs=1&" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344"></embed></object>[/youtube]
That clips from 04 world champs, we get about 20% more speed now
computers playing up, both are the same