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Unread 09-11-2017, 12:28 AM
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pic: 2 Wheel Swerve Drive

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Unread 09-11-2017, 12:29 AM
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Re: pic: 2 Wheel Swerve Drive

You joke (I hope), but I seem to recall a conversation with Mitch Stokes where he said the same thing, only with 3 rather than 2...
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Unread 09-11-2017, 12:34 AM
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Re: pic: 2 Wheel Swerve Drive

Quote:
Originally Posted by marcusbernstein View Post
You joke (I hope), but I seem to recall a conversation with Mitch Stokes where he said the same thing, only with 3 rather than 2...
He's not joking.

Might be a little early this year, though... Wasn't that supposed to wait a couple months?



He may even be approaching poohbear standards of drivetrain design.
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Unread 09-11-2017, 01:59 AM
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Re: pic: 2 Wheel Swerve Drive

I like the use of those orange fiberglass driveway markers on that arm.
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Unread 09-11-2017, 06:20 AM
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Re: pic: 2 Wheel Swerve Drive

Quote:
Originally Posted by Jeremy Germita View Post
I like the use of those orange fiberglass driveway markers on that arm.
I'm pretty sure that arm's for self-righting, meaning it's likely quite a bit stiffer than a driveway marker.
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Unread 09-11-2017, 06:42 AM
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Re: pic: 2 Wheel Swerve Drive

At least it's not an electric rip stick...... That's kinda what it looks like.

Put a low friction surface on those support legs and this could be viable in very specific situations, if a game created such. It would be fun to watch if nothing else.
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Unread 09-11-2017, 11:09 AM
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Re: pic: 2 Wheel Swerve Drive

Why not use a flywheel to balance it by counter-reacting against any tilting? If you put brakes on it and designed the rest of the robot correctly you could even use it for self righting.
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Unread 09-11-2017, 11:17 AM
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Re: pic: 2 Wheel Swerve Drive

Quote:
Originally Posted by BotDesigner View Post
Why not use a flywheel to balance it by counter-reacting against any tilting? If you put brakes on it and designed the rest of the robot correctly you could even use it for self righting.
Oddly enough we've got some experience doing that with a rocket. Was used for a rocket competition to cause a rocket to rotate in flight and worked well.
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Unread 09-11-2017, 11:19 AM
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Re: pic: 2 Wheel Swerve Drive

Quote:
Originally Posted by GeeTwo View Post
I'm pretty sure that arm's for self-righting, meaning it's likely quite a bit stiffer than a driveway marker.
They actually are fiberglass driveway markers. A springy self righting arm would reduce the impact if (when) it falls over, if the robot can get it out in time. You can adjust the stiffness by using a longer aluminum tube at the base of the arm, it would probably need a lot of testing to find the best setup.

Quote:
Originally Posted by BotDesigner View Post
Why not use a flywheel to balance it by counter-reacting against any tilting? If you put brakes on it and designed the rest of the robot correctly you could even use it for self righting.
I like the idea of using flywheels, but you have to put a lot of weight into one to have any affect. It would be simpler to just balance with the wheels for this kind of setup, I think.
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Unread 09-11-2017, 12:36 PM
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Re: pic: 2 Wheel Swerve Drive

Quote:
Originally Posted by marcusbernstein View Post
You joke (I hope), but I seem to recall a conversation with Mitch Stokes where he said the same thing, only with 3 rather than 2...
I hope you're kidding (1:24)
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Unread 09-11-2017, 01:11 PM
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Re: pic: 2 Wheel Swerve Drive

This just gave me some dangerous ideas for Madtown Throwdown...
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Unread 09-11-2017, 01:55 PM
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Re: pic: 2 Wheel Swerve Drive

Now make both swerve modules into differential swerves and give it to your programming team.
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Unread 09-11-2017, 03:39 PM
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Re: pic: 2 Wheel Swerve Drive

Quote:
Originally Posted by marshall View Post
Oddly enough we've got some experience doing that with a rocket. Was used for a rocket competition to cause a rocket to rotate in flight and worked well.
Appropriate, since the inverted pendulum problem is a historical element of rocket science.
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Unread 09-11-2017, 03:41 PM
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Re: pic: 2 Wheel Swerve Drive

Looks like someone is trying to one-up Dean.
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Unread 09-11-2017, 05:05 PM
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Re: pic: 2 Wheel Swerve Drive

Quote:
Originally Posted by AriMB View Post
Looks like someone is trying to one-up Dean.
The Swerveway ... patent pending.
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