Let's Make Robots!

Drive train for Heavy robots

I'm trying to build a robot that is vision based. To do that I'm using roborealm (Amazing software its FREE!!!!) but it neeeds to run on a PC. I can't seem to find a cheep drive train to move the computer + a light weight robotic arm. Can someone please help me?!!!

sam 

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I got all my sprockets from old bikes. Free from good-will.

http://194.201.138.187/epages/Store.storefront/?ObjectPath=/Shops/Store.TechSupplies/Categories/ModellingMaterials/GearsWheelsCams

They have cheap gears but they are nylon so they won't take a lot of weight and they can get ground down pretty easily.

Where could I find gears and such that aren't that expensive?

Sam 

Scavenging copy machines. Takes some time and can be messy (toner).

Walter uses 2 Dewalt drill motors for drive with a final chain and sprocket reduction of about 5:1. Both motors together draw about 40 amps just driving the robot around -about 60 lbs, I would assume it would be about double that with a person on top (which we have done!) Bottom line: With walter's drive set-up, he can move about 200 lbs around.

Walters first post (at the beginning) with chassis info

ONly a carpenter would have two dewalt drills lying aroudn that he can use, i have one but my missus would kick my arse if i took it appart, she bought it for me.