Here is a shot of our prototype from this year that was made from less than $200 total materials including transmissions, polycord belting (fused with a grill lighter), spockets, #25 chain, and Al hex, plate, and round stock.
http://www.chiefdelphi.com/media/photos/37060
We made 5 iterations out of Rought $200 worth of raw materials including the final one shown here:
http://www.chiefdelphi.com/media/photos/37063
The powertrain is banbots RS-545s through banebots planetery transmissions, then a 1:1 driving the rear rollers and the polybelting driving the front rollers.
This is a simple design that looks fancy only because of the machining. We had a wood prototype week 1 of build to test out the dimensions for claw before cutting metal.
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2011 Championship Finalists/Archimedes Division Championships w/ 2016 & 781
2010 Championship Winners/Newton Division Champions
Thank-you 294 & 67
2009 Newton Division Champions w/ 1507 & 121
2008 Archimedes Division Champions w/ 1124 & 1024
2007 Championship Winners/Newton Division Champions w/190, 987 & 177 The Wall of Maroon
2006 Galileo Division Champions w/ 1126 & 201
www.bobcatrobotics.org
"If you can't do it with brains, it won't be done with hours." - Clarence "Kelly" Johnson