Quote:
Originally Posted by jman4747
Has anyone adapted one of the gearbox/drive train calculators to account for a combination of different motors in a gearbox? With the miniCIM and Vex/Andymak having gearboxes for other motors with outputs made to mount where a CIM would, I'm wondering how to enter that. Or do I just write "2 2/3" for the number of motors if I have 2 CIMs & a miniCIM in one box?
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I don't recall seeing any of the calculators adapted; however, I do recall two things on this topic (1) Paul Copioli designed the mini-CIM to be used in combination at 1:1 gearing with a CIM in a drivetrain, and selected its free-speed and stall torque with that in mind, and (2) Ether did some analysis last year aimed at answering your question above. Maybe he or Paul will see this thread.
Mini-CIMs have a higher peak efficiency than CIMs because their commutators are the same size, while the mini-CIM has a shorter armature. This difference allows the mini-CIM to operate in combination with a CIM without overheating, unless the loading is very high and prolonged.
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Richard Wallace
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