 It quickly became very popular, and spread to Australia by 1988.The name derives from the slang phrase "bucket of shit", or similar Bowdlerised terms; rather than the usual finely tuned racing machines that traditionally graced racing circuits, these bikes were often recycled ex–road machines that had been crashed or fallen into disrepair.The original idea was to take a low-powered commuter motorcycle with a maximum capacity of 150 cc and remove the entire road going gear, thus creating absolutely the cheapest form of motorcycle racing in the country.