Chief Delphi - pic: Banebots- AndyMark crab module

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- - pic: Banebots- AndyMark crab module (http://www.chiefdelphi.com/forums/showthread.php?t=51422)

Greg Needel

09-01-2007 21:57

pic: Banebots- AndyMark crab module

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eshteyn

09-01-2007 21:59

Re: pic: Banebots- AndyMark crab module

That design looks great. One big problem though. When you turn the wheel you motor will be beyond the limits of the robot frame. It could get damaged pretty badly or get stuck under another robot.

Waynep

09-01-2007 22:18

Re: pic: Banebots- AndyMark crab module

Eugene, actually you don't. All you need for a swerve drive setup is 135 degrees of travel which can be contained within the bot. Motor reversing and programming gives you everything else.
Greg its a nice combination, but here are my concerns:
Clearance within the robot is still a problem you'd have to design for a very open robot near the pods. More importantly, the banebots motor and trans seems to be a lot of extra weight hanging off to one side to be trying to swerve. Once you are in motion its not so bad but, but you still need to have a pretty hefty motor, reduction, as well as support structure for all of this to happen.
-wayne

Billfred

09-01-2007 22:20

Re: pic: Banebots- AndyMark crab module

Quote:

Originally Posted by eshteyn (Post 552633)

That design looks great. One big problem though. When you turn the wheel you motor will be beyond the limits of the robot frame. It could get damaged pretty badly or get stuck under another robot.

Unless, of course, you add protection through some other means.

Greg Needel

09-01-2007 22:37

Re: pic: Banebots- AndyMark crab module

this was only designed to go 90 degrees....because maybe that is all we wanted ;)

eshteyn

09-01-2007 22:38

Re: pic: Banebots- AndyMark crab module

Quote:

Originally Posted by Greg Needel (Post 552703)

this was only designed to go 90 degrees....because maybe that is all we wanted ;)

In that case you should have no problem with damaging it, so go for it

DanDon

09-01-2007 22:40

Re: pic: Banebots- AndyMark crab module

Quote:

Originally Posted by eshteyn (Post 552704)

In that case you should have no problem with damaging it, so go for it

Quote:

This is not a teaser, or even something that will necessarily built I just saw that with the new planetary trannies and AM kit wheels that a crab drive might be easy this year. This is by no means a module that will be build in it's present form, as it is just a quick idea.....I just wanted to share.

Please read the descriptions.

Jonathan Norris

09-01-2007 23:40

Re: pic: Banebots- AndyMark crab module

It would have a much smaller footprint if you put the gearbox and CIM motor above the wheel and sprocketed it down to the wheel.

Brandon Holley

10-01-2007 13:35

Re: pic: Banebots- AndyMark crab module

I'd suck it up and bevel gear it...then we'd be talkin

Skute327

10-01-2007 21:24

Re: pic: Banebots- AndyMark crab module

I had a similar idea simply to use the motors and direct drive to the wheels. I wasn't going to pivot them. Does anyone know if the Banebots gearbox is strong enough to support a 120 # robot? (with pillow blocks of course)

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