Hi, I would like to add flaps to my new ARF plane. It's a World Model Extra 330L with a .91 4Stroke OS engine. I haven't started it yet, but what I am planning is to cut each aileron in two to make FLAPS. So I will use 2 servos per wing.

Why ? Because I need slow landings as our field here has no hard runway and only rougth grass runway. I don't want to damage the plane. And It could be interesting for a change...

question #1 : what should the dimension be for the flaps ?
question #2 : how can I simulate the behaviour of my "plane to be" in the simulator by modifying the Extra 300 from Reflex XTR and adding FLAPS to the model ?

Thanks for the ideas/answers.

Regards,
Marc.