One piece crank -> three piece
I have an old Schwinn bicycle that thirty years ago had a three speed hub, hand brakes, fenders and etc.
Over the years as parts broke, etc. it has turned into a simple cruiser and it would difficult to restore because so many parts have been replaced.
At this point I'd just like to get it rideable for now. The current problem is that the single piece crank has cracked. I thought about replacing it with another single piece crank because a nearby Schwinn retailer says they have both types of cranks in stock (both types of threads).
I was thinking of replacing it with a stronger three piece crank set but when I asked a local shop about that the person there was sure it was impossible.
I recall it was possible to find a three piece crank set that would fit that frame at one time. Does any one know if those parts are still available and where I would get them? I would prefer not changing the threads in the bottom bracket (if it comes to that I'll try another one piece crank).