I have three Evo's. the .40, the .60, and the 1.00.

I am running the .40 in a Goldberg Wild Stick. When it is running well, it has great power and pulls that plane around like any other engine of that general size.. if not better. But.. here we go.. The engine does not run consistently. I set it up and fly it, runs great, then land it, refuel then put it back in the air and it starts to act up... cannot reach maximum RPM, the gap between about 3/10 throttle and full throttle is just about the same.. meaning if I go to full throttle and want to back it off, I have to back off about 6/10ths before I see any effect, then it is extremely touchy between idle and 4/10th throttle. Yeah, I looked at the throttle and at the carb and it is linear. Then, it may go to full throttle, then again it may not (yeah, again, the throttle is full open yet I cannot get the RPM). Adjusting it to possibly lean it out a tad works ok but it now is to lean. Richen it and it just about won't transition.

Next is the .60. It is on a test stand and has not yet been on a plane... so the jury's out on that.

Now the 1.00. Ok. This engine is mounted on an Excelleron 90 pattern plane, inverted operation. This engine is NEVER consistent. Floods out, runs lean then runs rich, and so on. I've tried everything.. replacing the fuel tubing, insuring that the clunk is free, make sure the pressure from the muffler is available and not clogged, took the carb apart, and strengthened the spring, you name it, I've done it. One Gent is sending me an Iron Bay Fuel Regulator to see if this helps fix the problem. We will see. If it does, you can bet your bottom dollar that I will post it on here and let people that have EVO 100's that this may help them get it running right. Power wise, this engine has it. It does throttle up to full and pulls vertical as well as any of them. So, if and when I get it running right, I can imagine that it will do what I bought it for.

DS.