Originally Posted by
spathfinder3408
Now is a good time to replace that cottered crank with a cotterless crank. I personally haven't done one, but read up on it and its no problem as long as the replacment has the same threads as orginial.
it's a question of economics, a few dollars and a bit to time to fix what he has vs. spending more than the bike might be worth for an upgrade that isn't necessary.
There's also the issue of compatibility. Depending on when and where this bike was built it might have a 26tpi bottom bracket (Nottingham built bikes thru the early seventies). In that case he won't find a BB for it that easily, and if he misses that detail could end up stripping the shell and have made scrap when all that was needed was a simple repair correctly executed.
In the Ops shoes, I'd either fix this bike for a few dollars, or pass and put the money toward a better platform before I bought a new crankset and BB.