22-01-2011, 17:49
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no bag, vex only, final destination
AKA: Pinecone
 FRC #0228 (GUS Robotics); FRC #2170 (Titanium Tomahawks) Team Role: Mentor
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Join Date: Dec 2008
Rookie Year: 2006
Location: Glastonbury, CT
Posts: 7,790
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Re: Video of Mecanum Drive Running Circles Around 6 Wheel Drives
Quote:
Originally Posted by PayneTrain
Our build lead and I ran some simple vector addition, and realized that any mecanum wheel on a slight incline like the steel plates under the towers can and likely will cause 20% of the force lost on one wheel diagonally opposite to one on the incline, and transferred to the wheel on the incline. This will cause you to lose significant control of the robot, and in this case, a trip to your scoring lane can likely end up as a trip to the opponent's zone. It is very hard to right the bot after that, and can cause the rollers on the mecanum wheel to lock up.
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This entirely depends on your CG. If your CG is nice and low, the downforce on the front wheels won't change much on an incline so you'll retain manuverability. If your CG is high, the slight incline will shift more of your weight to your back wheels.
Reason number 450,000 to build with a low CG.
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Mentor / Drive Coach: 228 (2016-?)
--2016 Waterbury SFs (with 3314, 3719), RIDE #2 Seed / Winners (with 1058, 6153), Carver QFs (with 503, 359, 4607)
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College Mentor: 2791 (2010-2015)
-- 2015 TVR Motorola Quality, FLR GM Industrial Design -- 2014 FLR Motorola Quality / SFs (with 341, 4930)
-- 2013 BAE Motorola Quality, WPI Regional #1 Seed / Delphi Excellence in Engineering / Finalists (with 20, 3182)
-- 2012 BAE Imagery / Finalists (with 1519, 885), CT Xerox Creativity / SFs (with 2168, 118)
Student: 1714 (2009) - 2009 MN 10K Lakes Regional Winners (with 2826, 2470)
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