Originally Posted by bertinjim

polymorphself-


If you buy a Stronglight TS or a 49D, look on the back of the crank arm You will find a number sequence 14 x 1.25 which is the Metric/French standard. English will be 9/16 x 20. Pedals are often stamped with letters on the axle flats. French are D (Droite) right and G (Gauche) left. English are stamped R and L. And just to make your life a misery, sometimes there is no id stamped on the pedal and you need to very carefully, by hand - no wrench, thread the pedal into the crank arm thread and stop immediately if it binds because it's the wrong thread. Back it out and try the other thread standard pedal. Since your planned pedals are the originals, they are likely to be French threaded so when you buy a crankset, try to be sure that the 14 x 1.25 is visible in the ad photos or confirm it directly with the seller. Same for the bottom bracket, your bike is old enough to have French threads so be sure to get a French threaded set of cups and the matching axle and bearings. The frame has cleaned up really well - looks great already.