Stacking robots
 

Does anyone have creative ideas on stacking robots?
I've seen fembots almost do it with another team.

Re: Stacking robots
 

If the term "stacking" that was in the title and you mean stacking robots to get a triple balance, try searching CD-Media with the tags "frc1501." Also there is the search function. Try searching terms like "Stacking" or "Robot stacking."

Re: Stacking robots
 

this was to get more robots on the bridge

Re: Stacking robots
 

Like you said, 692 attempted it with 701. There have been plenty of stacks to get more bots on the bridge. Look at 1501 for more details on how they did it. They were like 701, but I couldn't see if they were as good shooters (I didn't watch their matches, so I can't say. Help here, anybody?).

If you're going to the CalGames offseason, or watching the webcast, you may be able to see a stack balance or two ;).

Re: Stacking robots
 

701 and 2865 did it.

http://www.youtube.com/watch?v=5qPtIfwSN6c


Although, I don't see the benefit because it was only those two on the bridge and they could have fit if they balanced normally.

Re: Stacking robots
 

Here's the other matches we stacked in...

Spokane QF Match 1 - Failed attempt at a triple balance... We clearly needed more practice with 294. Also I think having the CG of the stacked robot that high works against you when balancing. Luckily, 294 scored enough to win that match.
http://www.youtube.com/watch?v=bglFrbbN8Ss

Spokane QF Match 2 - Stacked but just a double... It seemed a better use of time to have 294 score some more balls.. unfortunately we lost by 2 points.
http://www.youtube.com/watch?v=NnnBxDSLOtk

Spokane QF Match 3 - Stacked but just a double again. Enough for a win and advanced to the semis, where we focused on defense to stop fender shooters.
http://www.youtube.com/watch?v=Gb7eKLP50uo

Was it worth it to do the stacking approach? Kinda yes and no.. It didn't pay off enough to win elims like we had hoped, but it was definitely a cool thing to try and pull off. I believe it really helped us get the ID award at Spokane, which is a win in a different sort of way. I still wished we would have tried it on the Coop bridge. It would be a penalty on both alliances, but they'd offset each other. It would be a truly cooperative effort!

Re: Stacking robots
 

Is it legal to have a robot begin on top of another? I know in 2007, there was a loophole that allowed alliances to score by simply stacking two dead robots on top of each other. Obviously, to get a triple balance in this years game, the bottom robot would have to be active. Is this a legal way to go for the triple?

Re: Stacking robots
 

As of BMR, they were fender-based two-point shooters. I don't know exact shooting percentage; I do know they made more than they missed.
Their stacking triple balance is well documented.
I don't know if they've made updates or changes to make them reach the 3-goal or shoot from the key. With their six treaded wheels, they weren't easy to push around at the fender.

Re: Stacking robots
 

Unless you've got a way to legally touch both the key [G01] and the bridge [G30-1] with the supporting robot and touch the key with the supported robot [G01], no. (And that would most likely involve sticking your favorite appendage outside the frame perimeter, also a [G01] call.) Net foul count, 1 T-foul (9 points) and 2 disabled robots for the match.


2007 was a special case. The loophole was confirmed to be there by the GDC during build season, but as soon as the strategy was used, it was declared illegal. Actually, IIRC, both robots were E-stopped the second they could E-stop them, but started active.

Re: Stacking robots
 

No.

We asked Aiden Brown at the North Carolina regional this specific question.

Although he couldn't seem to find an exact answer as to WHY it wouldn't be legal, (their robot would sit on our rear, and they would have an appendage touching the key to start with) he said it wouldn't be.

Re: Stacking robots
 

This may have been what Mr. Browne couldn't remember:
(blue text is blue box)

Re: Stacking robots
 

I don't know, we asked him about starting the match that way.

Re: Stacking robots
 

Right. He may have been unable to remember the exact rule that made the stacking strategy illegal, but he knew there was one. It was added in the Update on 1/20 (TU#4).

I know I had to look up the rule before replying--I knew there was a rule, and that it had been added to an existing rule, but I didn't know the number/wording.

Re: Stacking robots
 

Perhaps. We both looked at the rules (The pregame section) while discussing the legalities of it.

Re: Stacking robots
 

Ah. The pregame section. Yes, that would be why he couldn't remember. [G30-1] is in Robot-Robot Interaction.

Re: Stacking robots
 

Just curious, did this pass [G01]? When placed on the Court, each Robot must be in compliance with all Robot rules, may not exceed 60 in. tall, and have all appendages within its Frame Perimeter.

Re: Stacking robots
 

Yes. The appendage would not extend past the horizontal definition of frame perimeter, and they would be within the height limit.

Re: Stacking robots
 

We updated our shooter are 100% in autonomous for four matches.