easy way to find your robot weight.

[jdiwnab]

I used inventor to estimate the weight for last year's bot. I estimated that there might be about 10-20% error becuase of wires, fastiners that I didn't feel like modeling all of, welds, and just plain error. Inventor estimated about 105 lbs with battery, and I think it came out to 110 lbs with battery. So not to bad, as long as you expect some deviation. It can help you with planning, but you still need to weigh it.

As far as the battery goes, if you model it and the weight is off, weigh the real thing and use a calculator (or paper) and the volume info on Inventor and change the density appropratly (density=mass/volume), but you might need to convert units.