2 sets of bumpers legal?

[ChuckDickerson]

Our team colors have always been red and blue. This year we built 2 complete sets of bumpers for our robot. One red set and one blue set. We would like to be able to swap out the bumpers from match to match depending on if we are on the red alliance or blue alliance simply to match the alliance color (and the color of the trailer we are attached to). I am wondering if other teams have done this in the past and if it is legal. How would multiple sets of bumpers be viewed in the rules and during inspection? Would they be like batteries that you are allowed to swap in and out as desired or would they be considered alternate configurations of the robot? Is one set a spare or do both sets have to be weighed in at the same time and be less than 18lbs collectively? I have read the rules and can see it being called either way. Bumpers like batteries are not part of the robot weight and so I wouldn’t think they would be considered an alternate configuration, however, bumpers have their own weight restrictions and batteries do not. Our two sets of batteries will not make the 18lb limit collectively but each individual set do, of course. What rules would govern this situation?

[A Bear]

I think so but im not sure...i want dual bumpers lol

[Joe J.]

Sounds like a Q&A question to me. Though I seem to remember hearing of teams doing this in the past.

[EricH]

Answer #1: Go to Q&A.
Answer #2: It was fine last year (under last year's rules, which are not the same as this year's).
Answer #3: I would guess that they'd be illegal because they don't make weight together. Why do I say that? <R13> says that you have to weigh all possible configurations (of the robot) together.

Answer #4: Hi ho, hi ho, it's off to Q&A we go!

[A Bear]

but i thought bumpers dont coult for the weight....

[EricH]

Originally Posted by A Bear

but i thought bumpers dont coult for the weight....

They don't. They have their own weight limit of 18 lbs. The question is whether <R13> applies only to the robot or applies to the robot and the bumpers independently.

Of course, then there was one team with two sets of bumpers who didn't pass inspection last year... but they had other issues with inspection.

[Lil' Lavery]

Originally Posted by EricH

Of course, then there was one team with two sets of bumpers who didn't pass inspection last year... but they had other issues with inspection.

If you're referencing 1519, that's a completely different issue. Let's try and keep that issue apart from this one to avoid confusion.

[wo-bot 141]

I have seen teams in the past switch out bumpers. for example... wildstang switched bumpers in the elimination rounds in 2006 if I recall. all i think you would have to do is weigh them both so the are both legal. Still i would got to Q&A to be sure. but like i said you should be fine.

[EricH]

Originally Posted by wo-bot 141

I have seen teams in the past switch out bumpers. for example... wildstang switched bumpers in the elimination rounds in 2006 if I recall. all i think you would have to do is weigh them both so the are both legal. Still i would got to Q&A to be sure. but like i said you should be fine.

In 2006, bumpers weren't required. They could have run without them if they wanted. Still, Q&A.

[wo-bot 141]

Originally Posted by EricH

In 2006, bumpers weren't required. They could have run without them if they wanted. Still, Q&A.

Right they were not. we didn't like the idea of bumpers so our team decide not to put the on so we could have more kinetic energy with the robot.

[Jared Russell]

Provided the other set of bumpers was functionally identical (and I would argue that color has nothing to do with function when it comes to bumpers), I believe that these would be spare parts and so unrestricted.

But what I say means nothing...ask the Q&A.

[Jimmy Nichols]

We were one of those teams over the last two compeition seasons (Rack-n-Roll and FIRST Overdrive) that had color changing bumpers. In both instances they were legal as long as each set was built to spec. But, with the all of the bumper issues this year, I would definantly check with Q&A.

We decided against this year because our graphics team wanted to make sure the bumpers fit into the color theme of the robot graphics, website, buttons, etc.

[Al Skierkiewicz]

As you are only using one set of bumpers at a time, there is no effect on overall robot weight during a match. I would expect the Q&A to agree that this is legal. However, each set of bumpers will still need to be inspected and weighed separately. Please check in with your lead inspector for the latest if the Q&A is not answered. If you showed me two different designs for the bumpers, i.e. they are not identical in form, function and weight, I would ask you to choose one.

[suj]

well i doubt it there doesn't seem to be a reason for it to be illegal it's like making a quick change before competition what's wrong with before matches it's not like we're swapping parts up for something illegal and ridiculous like a handsaw or rockets

[Ken Streeter]

Originally Posted by Lil' Lavery

If you're referencing 1519, that's a completely different issue. Let's try and keep that issue apart from this one to avoid confusion.

Even though it's a completely different matter and unrelated to the original question in this discussion, 1519's bumpers last year between both robot configurations were within the 15-pound weight limit. We had a set of of six bumpers (some of which were quite short) which altogether weighed less than 15 pounds. Only four of the six bumpers would be on the robot for any given match.

If you can make your two complete sets of bumpers together satisfy the weight limit (as well as all the other bumper requirements) I would think you should be fine.

However, the GDC took the exact opposite perspective last year, ruling that all the bumpers needed to be on the robot at one time.