pic: Team 935 RaileRobotics Teaser #1

[railerobotics]

loading photo ...

[Stuart]

Im guessing by the amount of Pizza Hut/Mountain Dew in the picture that this will have some serious code going on in it.

[scottydoh]

Based on the two mecanum and two IFI traction wheels, Im going to guess some sort of hybrid mecanum/skid drive...And as stated, alot of programming based on the amount of Mountian Dew...

[Tom Line]

That is remarkable progress! Having settled on a strategy and concept, completely designed a brand new design in CAD, and gotten it into the cutting machines and machined all by the end of the first week is pretty amazing!

[p8blr]

That is a sexy chassis

[Gary.C]

Originally Posted by Stuart

Im guessing by the amount of Pizza Hut/Mountain Dew in the picture that this will have some serious code going on in it.

You forgot the AMP

[Chris is me]

Can someone explain to me the vector math behind a two mecanum two traction system (as opposed to two traction two omni)? I've tried to figure it out but I honestly can't get it to "work" in a way that would make sense to ever use in a drivetrain.

[J_Beth]

Originally Posted by Chris is me

Can someone explain to me the vector math behind a two mecanum two traction system (as opposed to two traction two omni)? I've tried to figure it out but I honestly can't get it to "work" in a way that would make sense to ever use in a drivetrain.

I think that the traction wheels are used to supplement the mecanum drive.

[Tom I]

Originally Posted by Chris is me

Can someone explain to me the vector math behind a two mecanum two traction system (as opposed to two traction two omni)? I've tried to figure it out but I honestly can't get it to "work" in a way that would make sense to ever use in a drivetrain.

I'm still not positive on this, but if they have a hybrid traction/mecanum drive, then it would behave semi-similar to traction/omni, with a few differences. True, there would be some vector differences, which I still haven't figured out yet, but think about this: One main down side to traction/omni that I've always seen is you get pushed, a lot. Another robot can push on the side of your bot with the omni, and your robot will be turned unless you fight it. This seems to be a solution to that, because the rollers on two mecanum don't line up like the rollers on two onmi, so there'd be resistance there, fighting the turning of the robot. If this works, it seems like a pretty good idea.

[PAR_WIG1350]

i'm not sure mt.dew & amp are allowable energy storage devices.

[Chris is me]

Originally Posted by Tom I

I'm still not positive on this, but if they have a hybrid traction/mecanum drive, then it would behave semi-similar to traction/omni, with a few differences. True, there would be some vector differences, which I still haven't figured out yet, but think about this: One main down side to traction/omni that I've always seen is you get pushed, a lot. Another robot can push on the side of your bot with the omni, and your robot will be turned unless you fight it. This seems to be a solution to that, because the rollers on two mecanum don't line up like the rollers on two onmi, so there'd be resistance there, fighting the turning of the robot. If this works, it seems like a pretty good idea.

Couldn't you accomplish this to a similar extent with a lower traction front wheel (say, rubber front, wedgetop back), but for much cheaper?

[Tom I]

Originally Posted by Chris is me

Couldn't you accomplish this to a similar extent with a lower traction front wheel (say, rubber front, wedgetop back), but for much cheaper?

Of course you could. I wasn't saying this was the best way to do it, I was just speculating on what they could be doing with this picture. Besides, who knows, those added vectors could give this drive train a better advantage that we're not seeing currently.