Thank you one and all for your input. One thing I knew for sure was that I didn't know. My plane has a 52" wingspan and a 9 " chord. The wing is approx 1.65" Thick so it will fly thru a loop. I use a 10/5 or 11/6 prop. I don't know if it is flying too fast, it may be. I will call Mr Denny soon and meet when convient for him- thanks for that name. I also appreciated the comparison of flapped/ unflapped planes characteristics. One person mentioned 45 degrees elevator movement as the maximum and I figured that out as I tried more and it didn"t tighten things up anymore. I will get a pic of my plane and post it as soon as I figure out how that works. Thanks Again!