RE: First 2m plane. Engine question
Most four stroke YS engines need 30% nitro fuel to run properly, so, it results in a very expensive engine, if you use a lower nitro content fuel, you might have idle and transition problems besides of lack of power. Regarding YS service and technical support, in my personal experience, it is very deficient. I have had very bad experience with the YS technical support (YS performance). I lost my money by purchasing a YS engine that never ran properly from the beginning, YS Performance did not honor the warranty compromise. Forget the four cycle YS and go the two cycle OS 1.60 !