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mechanum wheels

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mechanum wheels

Unread postAuthor: pyromanic13 » Sat Jan 13, 2007 9:12 pm

http://en.wikipedia.org/wiki/Mecanum_wheel

http://www.airtrax.com/

I really wanna make these wheels for my school robot... anyone got any ideas?

I'm thinking two circles of plywood (for the prototype) with 10 45 degree holes cut around the perimeter, some dowels shoved through the holes.

I have no idea how to make the wheels though. I supppose I could make a mold.
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Unread postAuthor: spudkilla » Sun Jan 21, 2007 7:34 pm

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Unread postAuthor: pyromanic13 » Mon Jan 22, 2007 12:52 pm

i've actually seen those pics before... do you participate in vex?
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patterns."

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Unread postAuthor: spudkilla » Tue Jan 23, 2007 9:22 pm

No, not vex FIRST if that's what your asking, but i have a vex kit and own a lot of accessories, i am a member of vexforum.com and vefan.com, and have built over 30 highly complicated robots out of the kit....its awesome! Do you own a kit?
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Unread postAuthor: pyromanic13 » Tue Jan 23, 2007 9:28 pm

I did, only made a basic design to learn the programing before it sorta got donated into my robotics team :?
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Unread postAuthor: iknowmy3tables » Tue Jan 23, 2007 9:42 pm

those things are awesome, I never thought that I might say that about a wheel. but dang I thought of that before
for making a one. I guess some nonswivl/ nonpivoting rollers bolted around a cylender like maybe a 3" pvc pipe, but to make the thing moterized I have no friggen Idea, then you might as well buy the wheel
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Unread postAuthor: pyromanic13 » Tue Jan 23, 2007 10:52 pm

the smaller wheels don't turn, just the larger wheels. the wheels don't even have to turn! each wheel needs its own separate motor.
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Unread postAuthor: iknowmy3tables » Wed Jan 24, 2007 3:18 pm

oh I get it. the wheel is like for tank style steering? I think you can still try something like I proposedor maybe glueing rollers to a real wheel,

however first tell me: which wheels roll (the bigger one or smaller ones)?, which wheels have motors directly attached, which wheels and motors move together?
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Unread postAuthor: pyromanic13 » Wed Jan 24, 2007 7:23 pm

^did you watch the video on the second link? you'll get it if you do
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Unread postAuthor: iknowmy3tables » Thu Jan 25, 2007 2:56 pm

okay now I get it, but I'm pretty sure that the smaller wheels turn, only they aren't directly powered. still is their anything wrong with attaching rollers onto a wheel, or axle?
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Unread postAuthor: pyromanic13 » Thu Jan 25, 2007 3:47 pm

oh ok I get what your saying and yes the smaller wheels do turn.
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