1976 MZ ISDT replica

so, we end up doing a job for a mate of dangerous's who is struggling to find a rear sprocket for his bike, the one on his machine is more hooked than captain hook's hook, it's totally f[hooked], we get a blank, right pitch, right number of teeth, [51, erm, rings a bell somewhere in the dark recesses of the 'ol loveless swede]from talon, brilliant, arrives next day, we nick the idea of the person who owned the bike before and rather than re-inventing the wheel, make a carrier out of the old spprocket, bore the centre of the blank sprocket to suit and mount up with some 8mmx25mm hex heads, cleaned up on the lathe and dished on the miller for that 'race' look, which is good because it's for a racer, yep, it's for a ...bugger, anyone got a bob for the meter?