My Poulan 42cc works great on our standard mix of 1 part 10% oil & 10% nitro glow fuel to two parts high test gasoline. However, it does have a slight drop in rpms when removing the glow plug heat, (battery), which indicates it actually could use a touch more nitro in the mix for this particular engine. Since I don't want to run more than one mix in the five planes I have flying on Gas/Glow, I just don't worry about it. It has plenty of power!

The Poulan is on my Giant Big Stik. It rolls about 30 feet on take off, and I then pull it to a 45 degree climb. Once I get about 30 feet high, I pull it vertical and it just keeps going.

AV8TOR