RE: Hand launch Combat planes?
My Diamond dust is very light and has a short wingspan and I do remember it was always "fun" to launch.
I often started that one with an electric starter, and grasped the plane by holding the cylinder head itself with a VERY THICK work glove. I need to do that quickly before my fingers get hot.
I have a Jett FIRE 40 on the DD, and since it is so light it lept out of my hand even with a 9x9 prop (or possibly a pylon prop, APC 8.5, 7.75 or similar, I can't recall).
Still have that bird but it's not flown in many years. I should upgrade it for 2.4 and give it a new RX battery.