Well, im very new to the hobby, and im trying to pick up as much info here as possible before i even visit a field(which i plan on doing very soon). I actually dont even have my model yet, but while i wait for it on order, this is how im seeing how its done. My question is to do with the recommended engine size for the model. I have on order, for my first trainer, a SIG Kadet MKII. I was told it is an excellent plane for learning the basics of RC flight, and that its a good BIY starter for getting the hang of building from a kit. So, that said, the largest size of engine stated for that model is any between .25-.40. I want to know if it will work if i put something like a TT Pro.46 or an O.S.-46AX. Or is .40 the max. size for that plane?.