I noticed the Aussie tandems had Perkins decals
so I'm assuming they were made by Mr. Daryl
Perkins (who rode the tandem sprint at the 1964
Olympics). If that indeed is the case, it is quite
a connection that Mr. Perkins has with the
Commonwealth Games:
-1966 Daryl wins sprint bronze
-1970 Daryl places 4th in kilo, & =5th in sprint
-2006 son Shane wins team sprint bronze
-2010 son Shane wins sprint gold
-2014 son Shane wins team sprint bronze,
and bike built by Daryl carries Australians
Modra and Niblett to tandem time trial silver.
(note: I didn't see the women's tandem sprint,
so I don't know if the Aussie bronze medalists
were riding a Perkins tandem or not.)