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Unread 11-01-2012, 23:23
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Djur Djur is offline
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Re: Mecanum on the bridge?!

Quote:
Originally Posted by Duke461 View Post
Not to rain on people's parades here, but.....
***Before I go on, I feel I need to point out that I do have experience with Mecanums. 2 years. 1.5 years driving***
  • In that first video, some on the other side is holding the ramp up (or down, however you look at it). Now, I can't prove it, but I'm pretty darn sure that that helps the robot get up.
  • It took a long time to get up that ramp. Too long.
  • 1 out of 5 times that drivetrain will probably fall off, unless you go super slow, which in that case see Bullet point #2
  • What happens if for some reason you can't go over the bridge that round? Mecanum's will have an extremely hard time maneuvering the ridge.
  • The material on that bridge was different than that of in the real game
  • In the second video, the Mecanum's were having a very hard time getting up the bridge (not too sure how it helped Mecanum's case). If anything, it shows that carefully done programming will be required just for your drivetrain.
  • The more top heavy these robots become, the harder it will get.
  • A preponderance of team's this year will have a strong hard pushing robot. Good luck scoring on one. It's not fun.
Please take my criticism in a constructive manner, as I will do the same.
-Duke
  • I was holding the opposite end of the bridge up to allow the robot on because it doesn't have a lowering mechanism (last year's bot). The robot moved under its own power the entire time.
  • There's uneven friction on the mecanums and the fiberboard is ~3x more slippery than the actual Lexan surface, so it takes longer to drive up.
  • The drivetrain will not fall off the robot (if that's what you meant), nor will the robot drive off the edge if there's a careful driver.
  • Not really. Mecanums still have good grip on the surface of the bridge.
  • Not my robot, so I don't know what's up in that video.
  • That applies for every robot, too.
  • I can't see how that's applicable specifically to mecanums.

Hope this helps.
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