Looks like I'm going to have to go with a more modern crank. Oh well. Any idea if a 1x9 or 1x10 setup with a 22 tooth front would be viable? Would a 22 tooth front cause too much torque (in the larger rear cogs) and break the chain or damage the hub or freebody? A 22 front 40 rear sounds ... "interesting" and might prevent some uphill walks. I hate walking ...

While my knees and hips are shot, I am worried about torque because I can still press 1,000 pounds with my legs. I use the "standard" 170/172.5 crank arms that came on the bikes.