Yep, I'm one of those Australians. My beetle weight brushless test drive worked, so its time to scale up. The problem is there has never been an Australian robot with a custom gear drive. We always use pre-built gearboxes or chains, so I have no experiance to draw from about what Mod gears can transfer that much power. I've seen a lot of european robots with custom gearboxes, so I guess this is the best place to draw experiance. Gears here are stupidly expensive, so much that it'll be cheaper to buy from Technobots, so I want to smallest gears that'll handle the drive. The current option that I've been modeling in Inventor has 12:30 spur gear first stage (ebay RC car pinons?) + 14:35 angle grinder set + 20:80 spur gear. Possible MOD 1 for the spur gears. Total reduction 25:1 and a no load speed of 5.8m/s. Sound good to you guys?