" The 26" wheels you're considering would be 559mm diameter - meaning that the brake reach would be an issue. You could compensate for that by building up some drop bolts, assuming you have access to decent tools (drill, drill-press, a good bench vise) and can fabricate. Conversion to 650B is... "
Your tension readings are IMO too high... overall average is over what is needed. Your highest tensions stress the spoke/wheel to it's limits... your '28' is what I term the 'Sargent spoke'-- the guy doing the most work/stress. That elbow/spoke is most... "
" My big complaint with centering cheap single pivot side pulls is the slop between the spring and the slot it sits in. The centerbolt has a part along it's length which doubles as the spring holder and the pressure point for both frame mounting (on one side) and arm mounting (on the other side).... "
" You can get terrycloth washcloths at Walmart at 18 for $4 or so, which makes them basically disposable. So I rotate the chain while putting lube on it, rotate it around a few times, then take the washcloth and wipe about 8" at a time until the black gunk is off. "