Poll: How many CIMs are you using?

[MaGiC_PiKaChU]

I'm interested in seeing what the other teams with 0 CIMs are up to... for our part:

-9 775 pro
-3 BAGs
-1 window motor

[smclean1969]

4 full CIMS for the drive train
1 full CIM for climbing
2 mini-CIMS for the shooter
5 bag-CIMS for shooter and defense manipulation

[mman1506]

Originally Posted by apalrd

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.

Your forgetting about the reduction. You need roughly 4x the reduction for a 775 pro compared to a CIM. More than often this requires multiple reductions (with hard to find gears) or a VP adding weight, complexity and size.

[apalrd]

Originally Posted by mman1506

Your forgetting about the reduction. You need roughly 4x the reduction for a 775 pro compared to a CIM. More than often this requires multiple reductions (with hard to find gears) or a VP adding weight, complexity and size.

You wouldn't need reduction on a CIM or MiniCIM? Relatively few mechanisms work well without any gearing at all.

A VP stage and ring gear (not including ends) is 0.132 lbs, well under the weight difference if you just need an additional 4:1 stage in an existing gearbox. You could also use a CIMile for the 775Pro (but not BAG motor) which weighs 0.4 lbs, still under the weight delta of switching to a CIM.

There are also many suppliers of 32dp gears or small pitch belts which can be mounted directly on a 775Pro shaft. There are plenty of ways to use these great motors.

[dradel]

Our team is using 775's and also vp for the first time this year. Have to say the 775's are a nice little motor. And I wish I had found the vp a couple years ago!