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Unread 23-01-2015, 14:33
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Richard Wallace Richard Wallace is offline
I live for the details.
FRC #3620 (Average Joes)
Team Role: Engineer
 
Join Date: Jan 2003
Rookie Year: 1996
Location: Southwestern Michigan
Posts: 3,628
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Re: Mini Cim torque in brake mode?

Ether is correct as usual.

If I had more details of your lift system (e.g., what diameter is the winch drum, or chain sprocket, or belt pulley that is lifting your elevator carriage) then I could provide more useful guidance; however, a Mini-CIM at 10:1 seems very fast. My own team is using prototyping with a Mini-CIM at 50:1 to drive a 24 tooth, #35 sprocket that lifts our elevator carriage. It is fast enough (we think, ~9 inch/sec), has plenty of lifting force (~12 Ampere lifts four totes), and holds its position nicely when the motor is disabled (brake mode).
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Richard Wallace

Mentor since 2011 for FRC 3620 Average Joes (St. Joseph, Michigan)
Mentor 2002-10 for FRC 931 Perpetual Chaos (St. Louis, Missouri)
since 2003

I believe in intuition and inspiration. Imagination is more important than knowledge. For knowledge is limited, whereas imagination embraces the entire world, stimulating progress, giving birth to evolution. It is, strictly speaking, a real factor in scientific research.
(Cosmic Religion : With Other Opinions and Aphorisms (1931) by Albert Einstein, p. 97)