01-02-2013, 11:03
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Passionate FIRST-er, CD donor
AKA: Gerry
 FRC #0578 (Red Raider Robotics) Team Role: Mentor
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Join Date: Jan 2012
Rookie Year: 2008
Location: Rochester, NY
Posts: 256
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Re: Problem with mecanum wheels
In addition to things posted above, consider your gearing ratio. Sideways motion has the highest total torque demand for mecanum drives (due to friction of the rollers). Your gear ratio should be such that the motors run at about half of their free speed, for typical sideways robot speed. That will give you a good range (so you can move sideways slow or fast and still be in the middle of the motor speed-torque curve).
__________________
Cal
R3: Red Raider Robotics (FRC Team 578)
Fairport, NY, USA
www.FairportRobotics.org
2016 Finger Lakes Regional: Semifinalist on Alliance 7 (1128, 2010, 578)
2016 NYC Regional: Finalist on Alliance 3 (3419, 578, 3017), 4th seed team, Team Spirit Award
2015 Finger Lakes Regional: 8-3-0 in qualification, 7th seed, Quarterfinalist
2014 NY Tech Valley Regional: 8-4-0 in qualification, 13th seed, Semifinalist
2013 Finger Lakes Regional: 4-5-0 in qualification, 26th seed, Alliance 6, 1-2 in tournament
2012 Buckeye Regional: Gracious Professionalism Award, 7-3-0, 14th seed
2011 Finger Lakes Regional: Engineering Inspiration Award
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