beepee,

I had an old 60 inch trainer wing that I built a seaplane type fuselage for. Mounted the engine above with a 50 ounce fuel tank. It had an OS FP 40 for power. About 4.5 pounds empty, 7.5 lb with full fuel. It would fly for about 2 hours at about 50 mph. It didn't have ailerons, used rudder and wing dihedral for roll control. The large mass positioned high up gave it some real bad handling qualities (inertial coupling problems).

Subsequently I put wheels on it, put the motor on the front, and a large water dropping bucket underneath. It handled fine like this, and would lift another 4 pounds or so.

The most enjoyable horizontal tail position I have found is just slightly above the wing. Extending the fuselage a bit really helps eliminate blanketing. I tend to design a smaller tail and place it farther back.

What size power will you install?

Multiflyer