Once the radiators were finished and cast the
fan housings were made, again only one was built and then copies were made. The fan housings only need to be a general representation of the real thing since once the armored covers are installed they are all but invisible with the only really important part being the fans. All eight of my fans were made individually. The armored covers were made separately for each side as some slight differences were encountered after the units were installed in the panniers.