Actually, no. We had first built a pusher twin. Photo attached. We had to add weight to the nose to get is balances right.

I wrote a program to find the CG of a canard using the formula published by a club mate, Ron Van Putte, when he wrote the pattern column for Model Aviation. It is fairly conservative, which is fine for me. I can handle a tail heavy 3D plane, but a tail heavy canard is something else. Send me your e-mail and I'll send it to you.

The twin tractor was my idea. I talked Flaps into that configuration when he was set to go with another pusher twin. This one balanced very nicely and we had to make no corrections after testing.

We have a little trick we use. After I calculate the CG point, Flaps runs a 3/32 ID aluminum tube through the fuselage at that point. When he gets the plane completed, we poke through the covering over the tube and run a wire through and pick up. This tells you right now if the plane is nose or tail heavy and makes it easy to fix and check. In the close up of the nose of the canard twin, you can see the hole for the tube. It is just about in line with the cylinder heads of the engines. Normally, no one notices the holes.