Success = not giving up??? Are the final drives on Cubs Cast "iron"? or cast steel? I have welded since I was a kid (now 46) and for a few years as a job. I apparently don't know diddley about welding cast iron because 2 out of 3 times I failed. First attempt was a Ford engine block with a cracked freeze plug hole - kept chasing the crack and ended up at the oil pan before i sold it for parts.
Used stick welder with 95 nickle rod, preheated and peened as it cooled, even drilled a tiny hole at the end of the cracks. Second attempt was a Farmall Cub front casting, same technique and same results...It cracked again in little places. Bought a new casting. Third attempt was a final drive flange on a Farmall Cub where it bolts to the axle housing...Ground everything to a bevel leaving just enough of the break to aid in aligning all the broken pieces (lots of pieces) then clamped it to something flat. I remember keeping it clamped and welding it on one side then unclamping and welding the flat side a little at a time to prevent warping. Used my wire welder with standard wire and 75/25 gas. Ground then flat filed welds flush after the repair. SUCCESS
After painting, you would never know it was welded and have used the tractor for years...no cracks no problems. Go figure??? Thats my experience for what it is worth. Any thoughts on my experience?