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Re: Crazy Drive Train Ideas
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#2
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Re: Crazy Drive Train Ideas
This is basically what I've been doing for the past few weeks straight
![]() Specifically, I've been attempting to find a way of making a demo/promotional robot that our team can show off to schools, potential sponsors, and the general public (especially when we do recruiting for our summer camp). I personally have been wanting to tackle the problem of an off-road sort of drivetrain, so I've been experimenting. For now my favorite solution is off-road swerve/crab drive, using two wheels on each pod (ok, I'll admit, the two-wheels part is mostly to make it look cooler, but it would have it's benefits: traction, weight distribution on soft material, etc) Each pod would be individually rotated via an FP or Window motor, and would raise and lower via a pneumatic piston and some guide bars. (the pistons could be pressurized somewhat to create a passive suspension system). I will upload some sketches and better explanations later... |
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Re: Crazy Drive Train Ideas
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#4
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'nuff said. |
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Anyway, if you want a crazy drivetrain idea... Figure out a 4wd drivetrain that is not vulnerable to pushing that goes over the bumps that can turn. I wish I figured that one out... Last edited by Chris is me : 11-06-2010 at 07:34. |
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Re: Crazy Drive Train Ideas
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#8
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Re: Crazy Drive Train Ideas
It also has to zero point turn, sorry.
![]() I saw one solution this year. Very forehead-slap moment for me. (Edit: I think with some adaptations, that same drivetrain could outperform a Nonadrive. Wait... I think I just inspired myself. CAD time!) Last edited by Chris is me : 11-06-2010 at 08:57. |
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#9
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Re: Crazy Drive Train Ideas
Pictures of the solution? Or Nonadrive for us un-initiated?
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#10
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Re: Crazy Drive Train Ideas
*spoiler alert for teams that want to guess
*The pictures available don't show it, but 195 had a drivetrain with 4 high traction wheels. To turn, they had drop down omni wheels in line with the back wheel axles. It was an extremely clever solution that I feel stupid for not thinking of when I wanted a 4wd this year. As for the adaptation, let me work on that one for a bit. |
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#11
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Re: Crazy Drive Train Ideas
I would like to make an adaptable drive train that is easily suited for most kinds of game play or game types
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Re: Crazy Drive Train Ideas
What do you mean by "outperform" the nonadrive? Considering that the nonadrive effectively addresses a multitude of issues with both omni and 4wd while combining their strengths (and even manipulating a perceived weakness of 4wd), saying a drive train will outperform the nonadrive is a very broad, boastful statment...
Additionally, until you've driven a drive train with "modes" (linkage in 2008/09, nonadrive as implemented in '10), you really don't get a feel for the true power of a manipulatable center of rotation. Last edited by JesseK : 11-06-2010 at 11:03. |
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#13
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Re: Crazy Drive Train Ideas
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#14
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Re: Crazy Drive Train Ideas
ok, here's a few sketches if you care to take a look:
This is 8-wheel swerve drive, with modules that can be raised and lowered (you can ignore pretty much all of the math and notes on there, that was me doing figuring on amounts of material for the whole bot) (I will hopefully have Sketchup models done soon) http://s226.photobucket.com/albums/d...rent=001-3.jpg This is a triangular(ish) robot, with a single swerve module in the middle, and basically a kiwi drive around it (three omni's, each powered by a FP/Window Motor). The only reason the omni's are powered is to keep the robot from spinning wildly when you try to rotate the swerve module. http://s226.photobucket.com/albums/d...rent=002-1.jpg |
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#15
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Re: Crazy Drive Train Ideas
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