[BJC]

I'll say two things real quick, then you can go search the topic as much as you'd like:

1. If you like Macanum because they allow superior manuverability to get around defence, then do NOT use them. They are not superior in this regard and are actually MORE suceptable to defence because they can be pushed around so easily. There was a thread on CD a while ago asking for proof of a mecanum driving "circles" around a tank drive. Although there were many videos of the tanks driving circles around mecanums there was not a single video of the opposite.

2. If you like mecanums because they allow you to more quickly allign to field elements this is slightly more valid. However, the lack of traction is still probably an overpowering reason not to use them. Building a simple tank and practicing with it will yield much better results then a mecanum. (Another point: you need lots of practice to be a good mecanum driver.)

Happy searching, Bryan