Yes, there are a number of ways to 'convert' it. 1-piece cranks use an oversized BB shell with press-fit bearing cups, which can be popped out and replaced with brand-new sealed units and 3-piece cranks. Or there are still PLENTY of parts and tools available for maintaining / overhauling / replacing 1-piece cranks.
There's really not much point in installing threaded cups to convert the shell to ISO 1.37"x24tpi since there are still so many options available in the oversized 'american' BB. $24.99 only buys you the conversion cups, not the new BB and crank arms to put in them.
Originally Posted by broomhandle
That's just the bearings, races and cups. No crank arms. Loose-ball, not cartridge bearings. It's basically exactly what you have already. There ARE also sealed cartridge bearings available for 1-piece cranks, which require no maintenance but are non-adjustable (who cares, right? Sealed cartridge bearings are the way to go).
Originally Posted by broomhandle
whats a 3 piece? any pictures? im a visual learner. haha, this cruiser is a 1959. the bottom brack has no threads. and looks huge, compared to road bikes....
