Uses of CIMS and associated reductions

[Aren_Hill]

Originally Posted by Aren_Hill

I've recently started doing some independent study work at college and managed to make it somewhat FRC related, and hence have a few general questions for the FRC community.

What occasions have you used a CIM motor outside of a drivetrain?

What were those occasions?

What gear reduction did you apply to said CIM?

What method/gearbox did you use? custom spur? planetary? number of stages?

What were the leading issues you faced when designing said reduction?

If you could respond with answers to these questions that'd be great

And to append my questions:

For arms etc what rpm did you typically gear down to? FP, BB, etc?
20rpm? 60rpm?

if you could pick a reduction for a CIM, what would it be?

[Dad1279]

2006 - Direct drive approx 5" wheel for Shooter
2009 - Direct drive 10" Fans
2010 - Approx 1:4 increase (belt drive) to power shop-vac internals
2011 - 12:56 CIMple Box to 20 tooth sprocket to power elevator
2013 - 12:18 to 10tpi leadscrew to lift robot

For arms etc what rpm did you typically gear down to? FP, BB, etc?
20rpm? 60rpm?

if you could pick a reduction for a CIM, what would it be?

a) We have used pneumatics for arms and arm-like mechanisms.
b) Do you mean an integral reduction? It's so easy to interface a CIM, I would not want an integrated gearbox, especially if it is a planetary.

However, I'd love to get a bag motor with an integral 20:1 planetary (700 rpm) in the KOP each year.