Replaced tail with a bit bigger and more aerodynamic one. Rolls are a bit better after I fiddled with elevons. Flew this morning for 10.5 minutes on 1100 mah battery. Just floating around with the birds at about 30% throttle. This wing is my favorite to fly now as it is so bird like. The only real weak point is my motor mount. Just a bit of plywood hotglued to epp. Tends to break on landing because the prop is still windmilling. I have some prop savers ordered but still need to build stronger mount. New Hobbit installment is due in Dec - looking forward to it.

Added piece to top of fuselage and it is stronger and looks better I think.
Added tail piece so have a few more square centimeters of wing area.

Am going to build a new plank similar to this one but use rectangular fuselage construction, thicker wing and bring top wing section all the way to the trailing edge so will be smoother airfoil without any trimming necessary. Also thought about building some wing tip extensions that plug into the end of the current wing tips to get some more soaring capability.

Update: I messed up putting a flat surface on the top of the fuselage that slopes up to the top of the wing - it is acting as a control surface and making the plane fly strangely and seemingly with more drag. Will take it back off and mount two panels at 90% angle to each other and see if that works.

Update Oct 5: rounded the flat panel on the fuselage and flew 3 flights. One was for 12 minutes on an 1100mah lipo. Flies beautifully now. Absolute joy to fly this wing.
The hollow wings are open at the ends so need to tape them up but they make a cool sound when they are open. The diagonal stripe on the tail makes it easier to see orientation of wing when it is far away.

EPP Foam Ugly Plank Wing (3 min 50 sec)

Originally Posted by FeiJi

The only real weak point is my motor mount. Just a bit of plywood hotglued to epp. Tends to break on landing because the prop is still windmilling. I have some prop savers ordered but still need to build stronger mount. New Hobbit installment is due in Dec - looking forward to it.

G'day FeiJi,
If you set up the brake on your ESC ( depending on how powerful it is ) you can manipulate the prop to a position where it won't break the motor mount on landing. This should also extend your flight/glide times as a windmilling prop is effectively an air brake. ( Picture a solid disc with the same diameter as your prop mounted to the front of your wing.) Alternatively, set up the ESC brake and use a folding prop.
Cheers,
StReTcH1