On Jul 7, 12:10 pm, John Smith wrote:
In article
,

wrote:
Diferent choppers, no doubt. The MD500 has no tailrotor and five
main rotor blades, and runs fairly quietly. Often used at night. The
other popular police copter is the Bell 206, which makes more noise
and that distinctive chop-chop sound.

Check before you SEND, Dan. :-))
Your are thinking of the 520N, NOTAR (No Tail roTAR)
Other versions of the 500 do have a conventional bladed tail rotor.

http://en.wikipedia.org/wiki/MD_Helicopters_MD_500

I was thinking of the original tailrotorless version, the
MD500N, but forgot the N:
http://www.deca-aviation.com/hawc1.htm
http://futurshox.net/aeroview.php?level=image&id=732
http://www.militarypictures.info/hel...d500n.jpg.html

Dan