Videoed at Kingaroy and District Vintage Machinery Club show in Kingaroy, Queensland Australia September 2015. The Aion tractor/prime mover range were manufactured in Dalby Queensland in the late 1960's through to the 1980's. Transmissions from General Grant or Lee army tanks, early units were powered by low revving Gardner 6LKB, 180 HP engines. Two Mack gearboxes gave 30 forward speeds including the 60 MPH road gear. Later units also used GM 225 HP two-stroke diesel engine. Tractor/Prime Mover info from " Australian Tractors, Indigenous Tractors and Self Propelled Machines in Rural Australia" by Graeme R. Quick. Thanks for watching, Cheers.