mate, there are no coincidences, only intersecting chains of cause and effect which we don t comprehend :-)
yah, putty road will take your breath away. i ve done it by car, in the panelvan and the coupe, both ways, going from brizzo to melbourne via the blue mountains, but avoiding sydney.
http://www.bikescape.com.au/?p=1683
http://motorcycleparadise.blogspot.c...stralia-9.html
to do it as a race is probably not the way, the views are what you want. i think they are better going from south to north. i went during the week, it was very quiet. you ll see some open cut mining as you approach singleton, an army town.
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1971 Garelli Gulp 50cc with open ports and 16 mm Bing Carbie + 1980 Honda XL
223 ZS 
+ 2007 Zongshen LZX200G + DR400SM