I have been out of town for about a month, so progress was halted. I have now begun work on the aileron bellcranks. This required cutting and bending some .063 4130 into the proper form, then welding to a 1/2 OD tube. The tube was welded, then reamed as needed to allow smooth rotation of a 3/8 dia inner tube. Images 1-3 show the process. Welding of the first arm in image 1 required making a wooden holding fixture to make sure everything was square to the tube. The wood lasts just about two welds before it burns up.
Center arm welded to tube
Preparing second weld using block to keep things square
