Poll: How many CIMs are you using?

[apalrd]

Originally Posted by jkelleyrtp

I'm curious as to the appeal for bag motors for the intake. Originally we had bag motors as well, but after the reduction required to get that 13,000 rpm to something usable and the potential for busting a motor, we switched to a minicim. It's more robust, requires less reduction, and can be run longer without overheating. The two disadvantages would be the size and power draw, but I don't find it significant enough to get a 100:1 versa and not direct drive.

It's all about power and weight.

BAG motors are good for ~150 watts of power and is listed at 0.71 lbs
MiniCIMs are good for ~215 and 2.16 lbs

So changing from a BAG motor to a MiniCIM gets you ~45% more power but with 200% more weight. For comparison, a 775Pro is rated at 130% more power and 12% more weight to a BAG.

If you don't need 215 watts, a BAG motor is a lighter and smaller alternative. If you need 215 watts or more, than the BAG motor isn't the right choice. Overall though, it's an excellent motor for most small mechanisms on robots.