RE: .10 size spad?
1st you gotta get more coro. Order it from Harbor, beg at the local gas station, etc. Then build a .15 sized FNS with 9 or 10" dihedral, and a 48" span. That .10, unless it's worn out, will pull it around. Prop it for thrust. Try an 8x3 and see if you get enough rpm out of it for 30mph or so (13K +). Another to have with you would be the 7x3. FNS is one of my favorites!