WoW!!! I have had an Evolution 10 cc gas engine in a Phoenix 46 size Spitfire for some time and have been quite disappointed with its performance. Up until now, the engine flew the plane but marginally. However, today was another story. I was using a 6 volt Nimh battery on the ignition until today. That battery went bad and I replaced it with a LiFe 6.6 volt unit and it made a world of difference. That engine came alive and performed great. I'm not sure that the battery was the difference (the engine breaking in may also contribute) but it sure seems so. I don't know if anyone else has experienced similar situations but there really was a huge difference in performance. I am finally quite pleased with the Evo 10 CC engine performance.

Best wishes and good safe flying.

Heli-NuBee