Mais uma opção para 50

NovaRossi R57HR 3D will soon be available along with mufflers, headers and spare parts. ETA 15th September. NovaRossi has put much time and effort into developing one of the most powerful 50 class engines on the market. This will be a hot engine in your 50 size helicopter

2.2 H.P. at 18,000 RPM. Pracitical range 2,000 - 21,600 RPM. 5 Ports, Ringed Piston, 16mm Crankshaft with 1/4 x 28 threads. 9mm rotary carb. Recommend 10 - 20% nitro. Made in Italy

http://www.planethobby.com/home.php?cat=26