Is this the 'square tapered' kind of crank? I am curious because this one is a French bike, Peugeot and I understand some French/English bikes have their own type of specs. It s a '84 Peugeot Course PB12
Also would I be able to unscrew the chainrings and use the small chainring (42t) as the only chainring of this bike? I am planning to convert this to a SS/FG.