I just ran my Evo .61 today. I pulled the limiter pins and ran it in like an ABC engine for the first tank, then set the high-end and idle mixtures. While they may start and run the engine at the factory, I don't think they do a proper run-in and an ABC will need one tank through it before you can think of flying it. Per the Evo manual, my engine should have already had this first tank through it before I received it. Well, if it did they sure do a heck of a job cleaning the engine - it sure doesn't look that clean after a few runs now, but it does start on the first flip .

The just fire it up and fly it is nothing but a marketing tool. If the OS .46 on the NextStar doesn't require a break-in, why does the .46 AX require one? Is there that much difference in the cylinder coating make-up? I'd rather spend the time running that one tank on the ground and know I have an engine that has the initial seating of the parts done correctly. I prefer that my engines last many years.

Hogflyer