In a previous thread by Hans Meij, it was suggested that flaps would be beneficial for his Giles wing. I've just about finished my Midwest G-202 but haven't flown it yet (need to break in the engine and paint the cowl and wheel pants). Based on that thread's commentary as well as numerous posts about how bad this plane is about tip-stalling, I'm seriously considering incorporating split flaps to help prevent tip-stalling during landing and deadsticks.

I've reviewed the article cited by Ollie as well as my copy of the Andy Lennon model airplane design book and I am looking for a bit more detail and/or suggestions. The Lennon book goes into exhaustive detail on slotted flaps, but I'm obviously too far gone for that implementation. Without too much effort, I can put a split flap, a little over 8" wide, one rib bay from the fuselage. I can make it as long (chord-wise) as I want, but the Lennon book suggests 20% of the chord, which would be 3" in this part of the wing.

Some questions I have at the moment is:

- Should the flap be rectangular or match the wing tapered planform (I'm thinking rectangular to provide a symmetrical area to the airstream, but I'll defer to the experts)?
- Is there an ideal position along the chord if it can't be on the trailing edge (it can't). Should I put it as far back as possible or put it near the thickest part of the wing?
- Is a 3" flap big enough since it's not very wide or should I make it longer chordwise (wider spanwise is really not possible without seriously tearing up the wing)?
- For an 11lb model, will Monokote hinges be sufficient for a flap? Putting pinned or CA hinges with some type of surface hinge will be tricky, but I can probably figure something out if necessary.

Thanks in advance for any help you can provide!