Funny how this 6.5 x 5.5 prop has always been just a tad bit too much for every .15 I've ever run....but it is listed as a .10 pylon prop.
My OS CVA, K&B and Super Tigers get bogged down by this prop a little, too. The 6.5 x 5 has seemed to be the best choice [of APC props]..but I have not done much "clocking" of .15 planes.
I'm hoping to see a sizable jump in power and speed with more work. A nitro head button will need to be made to explore those possibilities. With just a 2 oz tank, at least 0% nitro gives a decent flight time, no signs of heat stress. The venturi on this thing is a complex piece of work to make by hand. I'm not sure if making a larger venturi is "in the cards" for awhile, if ever.
Yes, I gave some thought to pulling out a trainer to get warmed up before flying this.. but then I kicked the little ***** demon that was talking that nonsense in the nads and left for the field with just this plane.