[pfreivald]

We used four 9:1 BB p80s on our Octocanum drive last year, then geared down a further 5:1 (net -- between the smaller traction wheels and a Gates belt with appropriately sized sprockets) when we got into pushing matches.

We got into lots and lots and lots and lots of pushing matches last year, and never once popped a breaker with a 45:1 reduction on four CIMs. Indeed, even with using pneumatics for the first time last year, and some extremely aggressive driving, we had better battery life than any other year thus far.