You mean single rotor....not blade. A single bladed heli would not fly well ! You ask for a good helicopter for $70.00 and you won't find one new. Those from the china companies are more toy-grade than hobby grade. Plus the parts(if available) need to be shipped in too when they break and that can take weeks, Spend some more and get a Blade 120sr or look for one used. Better made and parts are quickly available. http://www.bladehelis.com/Products/D...ProdID=BLH3100