COMMANDO CLUTCH CENTRE WITH A SMALL PILOT BORE

THE PURPOSE OF THIS CLUTCH CENTRE IS TO ALLOW THE MORE ADEPT OR ADVENTUROUS BUILDER TO MACHINE THIS CENTRE TO FIT HIS OR HER SHAFT THUS ALLOWING THE RATHER GOOD COMMANDO DIAPHRAGM BELT DRIVE TO FIT ANY VEHICLE.  THE CENTRE HAS A PILOT BORE OF 1/2" (12.6MM) AND IS STEEL, NOT HARDENED.  IT IS QUESTIONABLE WHETHER YOU WOULD NEED TO HARDEN THE CENTRE OR NOT AS THE ORIGINAL COMMANDO CENTRE WAS NOT HARDENED.  NORTON BEGAN TO HARDEN THEM IN AROUND 1973 TO INCREASE MILEAGE.