I decided to go with the Delta wheels and assemblies. If I blow up the aluminum wheels, I have the heavy cast iron General wheels to fall back on. So I spent yesterday dismantling the wheel assemblies, to see what I can adapt to my needs. The tension and tilt idler wheel assembly will require much modification, but I think I can use most of it, I,ll work on that tomorrow.
For the drive wheel assembly the only thing I can use is the band wheel itself. The casting is to heavy and odd shaped to use. Both bearings were shot, dry, and noise. I considered the shaft but it was a little long and would have been harder to fit odd size bearings too, without a lot of turning.
So after thinking about it for a while, I made a trip into town this morning and picked up two 1 1/4" pillow block bearings and a 3' length of 1 1/4" chrome steel shafting. In the picture below I have already turned the 11" shaft I cut from the 3' piece and trying the bearings on it.
Here I turned the band wheel side to 1" to accept the Delta wheel. The rest of the shaft will remain 1 1/4".
After turning I cut a 1/4" keyway, and drilled and tapped the end to accept a 3/8" X 1" bolt, lock, and heavy washer. The other end still needs a keyway, tomorrow.
Here is a rough assembly, The drive pulley is 14", the band saw wheel is 20".