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View Poll Results: which holonomic drivetrain is the best???
mecanum (small rollers are 45 degrees to main wheel) 22 31.43%
omni (small rollers are perpendicular to main wheel) 7 10.00%
crab drive/swerve drive (wheels turn in order to change direction) 45 64.29%
other 10 14.29%
Multiple Choice Poll. Voters: 70. You may not vote on this poll

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Unread 29-03-2010, 13:19
Foster Foster is offline
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Re: which holonomic drivetrain do YOU think is the best any why???

I think that a 360 degree with all four pivots turn independently moving swerve drive is best since that's what we are driving this year.

But I have to give very high marks to the omni/twitch hybrid I saw at Philadelphia. (Sorry I've spazzed on remembering your team number/name).

Each corner was a pair of Andy-Mark Omni's bolted together so that there was a continuous set of rollers around the circumference. They were set up in a standard 4 motor drive.

Two opposite corners were mounted on Delrin pivots. The wheels could be turned 90 degrees by two small pneumatics.

Best of both worlds: tank drive with good forward / backwards grip but a little slip to allow easy turning and the ability to flip into a omni-bot for strafing and translation movements.

A very clever solution to allow omni-bot flexibility with a low center of gravity and clearing the humps.
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Unread 29-03-2010, 13:27
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Re: which holonomic drivetrain do YOU think is the best any why???

Quote:
Originally Posted by Foster View Post
I think that a 360 degree with all four pivots turn independently moving swerve drive is best since that's what we are driving this year.

But I have to give very high marks to the omni/twitch hybrid I saw at Philadelphia. (Sorry I've spazzed on remembering your team number/name).

Each corner was a pair of Andy-Mark Omni's bolted together so that there was a continuous set of rollers around the circumference. They were set up in a standard 4 motor drive.

Two opposite corners were mounted on Delrin pivots. The wheels could be turned 90 degrees by two small pneumatics.

Best of both worlds: tank drive with good forward / backwards grip but a little slip to allow easy turning and the ability to flip into a omni-bot for strafing and translation movements.

A very clever solution to allow omni-bot flexibility with a low center of gravity and clearing the humps.
You're talking about 1218, I believe they won and award for their drive.
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Unread 29-03-2010, 13:52
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Re: which holonomic drivetrain do YOU think is the best any why???

Best for what?

(I don't consider swerve drive holonomic.)
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