[EricH]

Originally Posted by TheAnsweris42

Some members of the drivetrain team went down to a company that makes motorized wheelchairs a while back, and came back saying that we can't run four CIMs on the battery, alone without electronics, and still have enough battery life. ...I think we should at least run two motors for each transmission on a RWD system, but they keep saying it wont go...

Also, what motors do you recommend for the drive system? On a RWD I mean.

In this case, I would have to say that the wheelchair people don't know how little current a FIRST robot can draw. An example: 330's 2005 robot has 8 motors (4 CIMs, 2 FPs, and 2 window motors). We ran it for 45 minutes on two batteries, and the only reason we stopped was because it was getting hot under the lexan sides. Need I say more?

For the drive, the CIMs are probably your best bet. Four small ones will do the trick, with power to spare. If you can do four, do four. If a motor in the drivetrain fries suddenly, you want a backup (even though it's hard to fry a CIM).