Thanks for the reply. Basically it is a1/11 scale boeing vertol Osprey. Power is from a Wren 45 with 2nd stage turbine coupled to a Baileys gearbox. Turbine and support equiptment with gearbox weighs nearly 3.5 lbs. Add 32 ounces of kerosene 2 lbs it all adds up quick. I hope to keep the weight down as much as possible and dont know yet what the actual fuselage will weigh. The rotor systems weigh in at 3.5 lbs. Probably another 1 lb.for drive mechanics .The wing will have fowlerflaps but I have no clue as to what angle to use since there is a lot of prop blast that will be at a 60 degree angle from horizontal. Hopefully Ill be able to get the weight down to 14 lbs but I really dont know.Any questions Ill be happy to answer,no secrets here.