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Unread 28-03-2013, 19:49
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Re: Turning with 4 kit wheels

Reduce traction for one set of wheels. Now that I've given the solution, here are some possible ways to implement it:

--Add a middle wheel to each side, dropped slightly from the rest.
--Swap 2 of the 4 wheels for omni wheels (not easy if you don't have said omnis, but that's something to think about for later seasons)
--Swap one end's wheels for lower-traction wheels (or possibly higher-traction wheels... but that's not something I'd try)
--Grab a roll of duct tape and wrap it around the tread on one end of the robot. Replace every couple matches or so.
--Grab a couple containers of zip ties and put zip ties around the treads.

And, at the end of the event, grab a roll of field carpet if you can (talk to the FTA and arrange a transport vehicle); this will allow you to test your drivetrain under competition field conditions in future years.
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Unread 28-03-2013, 19:55
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Re: Turning with 4 kit wheels

If you can't get omni wheels, the 2009 Lunacy wheels work really nice to help turn. We did this back in 2011 and it helped performance a bunch.
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Unread 28-03-2013, 20:10
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Re: Turning with 4 kit wheels

Frustrating that a 7th year team is still having this problem.

But yes, the problem is too much traction on too long of a wheelbase.

Either shorten the wheelbase (move the wheels closer together), which might cause tipping problems or reduce traction on one set of wheels (front or back) by swapping for lower traction wheels (2009 rover wheels, or omni wheels are likely best choices) or by adding tape or zipties to the wheels you have.
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Unread 28-03-2013, 22:05
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Re: Turning with 4 kit wheels

Though we are a 7th year team, because of the Ontario Strike Problems, many of our metors were not able to come back and help us out and since the team roster is all rookie....its tuff
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