Originally Posted by
flammenwurfer
Any idea what size cone wrenches a 70s ish Gitane should need? Are the cone and the locknut usually the same size?
That depends on the particular brand and model of hub, but most French hubs of the era use 13mm for the cone and 16mm for the lock nut. Rear hubs are typically 15mm for the cone and 16mm for the lock nut, though there are other combinations.