I bought two of these for a Sky King Songbird, I'm breaking them in on some ARFs though. I've never seen anything written about them so it was a little bit of a gamble.

The first impressions where good, the come nicely protected in a molded foam, the first thing you notice is the CNC crankcase, BING. With the Chinese you don't know if this means the crankcase is CNC'ed from billet or if they just ran a CNC machine over a casting, I think I saw that once on a Chinese engine. These appear to be billet.[sm=thumbup.gif] The first time I tried to check the timing I got nothing, one of the sensors was defective, I check the timing on the on I didn't have mounted and found it to me too advanced, ~40*. Now even though they say they are run for seven minutes at the factory, I'm thinking maybe not. I checked the needles on the carb, and they are both set at about 1 1/4 turn, none of my engines run with that setting, so now I'm pretty sure that if it was run they just started it, saw that it turned over and boxed it.

I ran it today. The first thing I did was time it, then I turned both needles out 2 turns. Boy was this thing a bear to get started! I tuned the carb, and then checked to see what the needles where set to, both where set now at 1 1/4 turn.[sm=angry_smile.gif][sm=angry_smile.gif][sm=angry_smile.gif] Boy am I embarrassed. I guess they do run and tune them.

Once I got the carb back to where it should have been left at, the engine started easy, ran very smoothly, and I'm happy with it.

7000rpm with a Turnigy 16x8 Cherry prop.
1740 idle.
This was after about 32oz of 32:1 Pennzoil Aircooled.
Good acceleration, seems very smooth, a vibe at 2700 rpm, but that may just be the harmonics of the plane it's in.