Get the Hemma 'motorcycle atlas of Australia' - that has petrol stations where they are important .. and you can see where you'll need a longer fuel range on your planed route. If you need to, buy a plastic jerry can or two and use it only where you need too. Oh and buy it at a major town before you need the can .. and sell it afterwards .. camping grounds can be good for this .. or exchange it for clod
, meal .. what ever at a camping ground...
Top speed is not important .. cruse speed is. The Northern Territory has a max speed these days of 130km/h .. but the road trains will probably still be doing 120 km/h .. that is a good speed to do there as then you are not overtaking them nor having them overtake you. Having said that most of the 'grey nomads' do 80km/h .. a good economical speed!
Best if you both have the same model of bike!
--------------- Read the stuff on the left side bar .. there are lots of good hints there even if they are written for round the world travel.
Regards Frank Warner
motorcycles BMW R80 G/S 1981, BMW K11LT 1993, BMW K75 G/S