Re: Drive-train / chassis weight
 

We haven't finished assembling ours yet, but the basic 4 CIMs and two KOP gearboxes weighs a ton to start with. We tried to gouge out the gears but they just broke our bits :(. We're using a custom frame, half aluminum, and half lexan so its pretty light weight. Our shifting mechanism is just a motor with a bit of metal so thats also not bad.(Yeah a non pneumatic shifter, using KOP gearboxes...) I'm guessing (based off some inventor estimates) about 35-40 pounds.

Re: Drive-train / chassis weight
 

Our drivetrain, without its electronics, is about 38 lbs. at the moment. We replaced some lightweight spacers with bolts and made the weight just a bit more than I'd anticipated, but I am so far pleased with it.

Re: Drive-train / chassis weight
 

How are some of you getting these drive trains so light? We're going with 6 wheel drive, using 4 small CIM-Dewalts. The 4 motors with the Dewalt attachment is weighing in around 17.6 pounds for us. If there are any other teams using 4 small CIMs with Dewalts and 6 wheel drive, could you enlighten me as to how you do it? Private message me or reply, but with the weight problems we're already having it'd be nice to see how other teams shave off those pounds, diet and exercise just don't seem to be working.

Re: Drive-train / chassis weight
 

Our 4 wheel drive platform with KOP gearboxes, #35 chain drive, 9" Skyway pneumatic wheels, 4 CIMs and a battery holder is 49.5 lbs. We do have to add a couple of skids, but hope to lighten up the sprockets and trim off the shafts. to make up for it.

Re: Drive-train / chassis weight
 

Before we broke it down to build our final drive platform, our test platform had

4 holonomic wheels
4 small IFI grip wheels
2 large CIMs
2 small CIMs
rails from the kitbot
Kit trannys
Chains
RC, Radio, etc
2005 Fuseblock
4 Victors
Battery
Plywood deck

And this weighed a bit over 40 lbs. I expect the final version to be a bit lighter, but not much.