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Originally Posted by Thromgord

By the way, one comment I haven't heard is that mecanum wheels don't work as well under very light loads; we built a mecanum 'bot in the off-season two years ago, and without putting about 40lbs of weight on it (initial weight was about 60lbs), the mecanum wheels wouldn't work properly (it had difficulty going in even the vague direction we wanted to, and after blaming the programmer like we always do, we added more weight and it helped tremendously). I know that you'll have no trouble making a heavy-enough robot, but just be sure to keep this in mind.)

Our robot last year weighed in at 75 lbs with the battery and bumpers installed, and had no issue whatsoever with driving in any desired direction. Was your robot properly balanced so that there was even weight distribution between all 4 wheels? Did you use a gyro for field-centric drive?