A full day's work today although it doesn't really look like it. First job was to weld up three sections of 5/8" * 0.035" tubing to make the aileron mass balance horn. Then this was part filled with molten lead and tack welded to the front of the aileron torque tube to check for balance. A couple of iterations of adding lead and re-tacking saw the balance just slightly nose heavy to allow for the covering and paint. The aileron mass balance horn was then final welded in place. Unfortunately, when the test rib was checked it became clear that the weight would foul on the rear spar so it was cut off, shortened slighty, the top front edge curved, additional lead added to compensate and re-welded into place. It is still very close to the spar but should now clear OK. Next job was to mark on the bench the positions of all the wing ribs and position the flap and aileron over them. The positions of the hinges could then be marked and short sections of 1-3/8" diameter tubing sawn into quarter arcs and welded either side of the four hinges to locate them. Finally eight plates were cut out of 0.032" steel plate and welded round the hinges. The fabric will be glued to these to make a neat
junction round the hinges. Some new T-88 epoxy also arrived today so it's back to rib making tomorrow.
A full day's work today although it doesn't really look like it. First job was to weld up three sections of 5/8" * 0.035" tubing to make the aileron mass balance horn. Then this was part filled with molten lead and tack welded to the front of the aileron torque tube to check for balance. A couple of iterations of adding lead and re-tacking saw the balance just slightly nose heavy to allow for the covering and paint. The aileron mass balance horn was then final welded in place. Unfortunately, when the test rib was checked it became clear that the weight would foul on the rear spar so it was cut off, shortened slighty, the top front edge curved, additional lead added to compensate and re-welded into place. It is still very close to the spar but should now clear OK. Next job was to mark on the bench the positions of all the wing ribs and position the flap and aileron over them. The positions of the hinges could then be marked and short sections of 1-3/8" diameter tubing sawn into quarter arcs and welded either side of the four hinges to locate them. Finally eight plates were cut out of 0.032" steel plate and welded round the hinges. The fabric will be glued to these to make a neat 
junction round the hinges. Some new T-88 epoxy also arrived today so it's back to rib making tomorrow.
