Quote:
Originally Posted by LedLover96
Can someone explain how torque is increased? I thought it was determined by the gear ratio?
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It can be, yes. Adding motors by itself won't increase speed, but the torque contributed by each individual motor allows you to change the design to achieve higher speeds without blowing every breaker and motor in the system. We robbed our 2011 robot of two CIMs and then used it for driving practice. The motors were dangerously hot quickly.
This is all assuming the motors are turning at the same speed; when you start combining different motors with different speeds, things can get fuzzy. This is what's made the AndyMark AM Planetary so popular; it would take Fisher-Price or 550 or BaneBots motors and get them Close Enough To A CIM that you could more or less ignore the differences in speed.
For reference, last year we ran seven motors on our robot. Four CIMs on drive, two AM-9015s, and a BaneBots 550. Never had a battery issue. This year, it's 8. If you have the capacity (space/weight/electrical/financial) to add them, I'd almost always say do it.
