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-   -   Turning on the bridge (http://www.chiefdelphi.com/forums/showthread.php?t=105160)

Grim Tuesday 28-03-2012 16:48
Re: Turning on the bridge
 
Quote:
Originally Posted by pfreivald (Post 1150668)
In my experience thus far, pushing a dead-weight robot that is turned sideways on its wheels up a polycarbonate slope is harder than it seems. So I guess I'd say "essential unless you have a monstrous drivetrain and very good traction on the polycarb".
That's where we come in. When people ask us if we have a special bridge balancing mechanism, we call it "monstorous treads with excellent traction".


At FLR, we directed our (wide) alliance partners to drive against us as we tripled, and we still managed to push them up the bridge.

Travis Hoffman 28-03-2012 17:54
Re: Turning on the bridge
 
Quote:
Originally Posted by Samk (Post 1150663)
We have an 8-wheel drive, middle two dropped, and though we have not accomplished it at competition, we have been abe to turn sideways while maintaing balance.
6WD 8" pneumatic zero drop here - we've turned quite easily on the bridge during home practice, balanced or unbalanced, but not really with other bots on there at the same time. I'm not sure we can be pushed anywhere once sideways - never bothered asking anyone else to try!

We've thought before about meaningful ways to hang one side of the drivetrain off the edge of the bridge...that's a scary thought! We'll keep thinking.

pfreivald 28-03-2012 18:08
Re: Turning on the bridge
 
Quote:
Originally Posted by Grim Tuesday (Post 1150838)
That's where we come in. When people ask us if we have a special bridge balancing mechanism, we call it "monstorous treads with excellent traction".


At FLR, we directed our (wide) alliance partners to drive against us as we tripled, and we still managed to push them up the bridge.
Yup. Yours was one robot I was thinking of in particular.

VKP 28-03-2012 20:21
Re: Turning on the bridge
 
Our team has a mechanum (AM 8") drive train this year, and we are easily able to turn on the bridge while maintaining balance. However, we have found that it has been difficult for other robots to push us up sideways, despite our omni-directional drivetrain. It is tough to do.


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