Yes, guess you are right, seems to run pretty good on the ground, I haven't put her up yet, but been wondering if a little more power would be a good thing, I was going to make up a 5 cell pack for it or use a lipo pack..... Lipo would be nice and light..... I got my engine used, don't think it had been run more then a couple of times but I didn't get a manual with it so I was wondering about what everyone else was doing for a pack.