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Re: 3 CIM Drive Train Battery Draw
We ran 6 CIMs on our drive train last year and are running 4 CIMs + 4 MiniCIMs on our drive train this year.
Yes it will can eat batteries, we plan to buy 6 new batteries every year, it's just simpler that way and we know we have good batteries. We donate some of the older ones to rookie teams, they still work pretty well but we know they have been run very hard.
For our first two events we were traction limited but our top end speed couldn't keep up with the likes of 118 and 1477. We changed our gearing for Razorback and IRI and knew that if we went for too long in any pushing match we would blow the main breaker or brown out. We still got in pushing matches but we actually had our driver trained to react to the underglow on our robot. It was run directly off the PD board so when voltage would dip low enough to completely kill the lights we knew we only had about 1.5 secs before we would likely brown out the radio. It took some drive practice to get the hang of it but we only blow the main breaker once (that was when we ran into the pyramid and it might have been due to shock and not current) and we browned out in our first match at IRI and never again.
It's entirely doable to run 6+ motors on your drivetrain and can be very advantageous but understand that there our trade offs.
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Team 647 | Cyber Wolf Corps | Alumni | 2003-2006 | Shoemaker HS
Team 2587 | DiscoBots | Mentor | 2008-2011 | Rice University / Houston Food Bank
Team 3847 | Spectrum | Coach | 2012-20... | St Agnes Academy
LRI | Alamo Regional | 2014-20... "Competition has been shown to be useful up to a certain point and no further, but cooperation, which is the thing we must strive for today, begins where competition leaves off." - Franklin D. Roosevelt
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