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Unread 25-03-2016, 00:02
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Re: Severe voltage drop

Note - numbers probably aren't perfect because I don't think JVN's design calculator can "do" tank treads. But I like to imagine the numbers are roughly accurate enough.

In case anyone was wondering, (with the assumptions that those pullies are 4" tall and the tread has a similar COF to Blue Nitrile), your drivetrain had a free-speed of 19.93ft/s and a "pushing" current draw per motor of 265.15 Amps. Just a smidge higher than a normal draw...Okay, a lot higher than a normal draw.

If you do as Mr. Stratis suggested and add in a 2:1 ratio somewhere, it drops your free-speed to a respectable 9.97ft/s and a pushing draw of 133.93 Amps, or half of what you were at previously. Adding a 3:1 ratio somewhere gives a free speed of 6.64ft/s and a pushing draw of 90.19 Amps. A much more "normal" pushing draw.
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