I have a frame that I dragged out from under the bench, for my next restoration. It has 2 peices of 1 inch angle iron about 6 inches long, fitted parrallel, and brazed over the rear LHS top tube, just back from the battery box. Anyway, I melted the brazing away to get the angle iron peices off, to reveil, the reason why underneath. The frame tube had fractured completely in half, just where the factory brazed on lug finishes. The serated edges match, but the LHS tube is very slightly bent, to the naked eye, and also the two top tubes and the two bottom tubes of the rear frame section are out of kilter with each other. There is mis-alignment somewhere, between the centre line of the back axle, and the centre line of the steering stem tube, 90 degrees apart. Obviuosly the rear frame section has suffered some sort of trauma.
When I completey 100% built up the bike ready for painting, everything aligns up nicely. Everything fits good. Everything looks good.
Me and my freind musse that it must have taken a direct bullet hit, maybe in the suburbs of Berlin.
If only these frames could talk.
Is there any further info out there regards specific frame aligment data in addition to military manual TM-1175. pages 73/74
I haven't yet read Bruce Palmers encyclopeidia.
Also what specific metal is WLA frames made of. Bsa M20's were "Austenitic Iron"
Is there a special stick rod to weld the fracture directly, or do I need mig, or tig. I'm not a welder, but I have to find out the info for my welder to repair.
Hope you can help.