Maximum Number of Capped Tetras?
 

How many small tetras(not goals) do you think EACH robot will be able to cap?


Edit:- Total number of small tetras stacked, during the duration of a match(could be stacked on various goals)

Re: Maximum Number of Capped Tetras?
 

Is this on one goal or for the duration of the match?

Re: Maximum Number of Capped Tetras?
 

just a note on this.....woody told me at kickoff that they put as many as 12 on a goal and it got very unstable so that was going to be their "safety limit" whatever that means


also for all those people thinking they are going to get 7+ on a goal they had better do that all at once or when placing the last tetra they will have to lift it 3.5 feet over the initial goal height

Re: Maximum Number of Capped Tetras?
 

If there is any team that is able to stack atleast 3 high, then their competitors are incompetent - The mechanism just to stack that many high would have to be so quick, and your alliance members would have to be playing perimeter defence the entire time -- only way without intereference is on and off the human loading bay... but then you have to cap
I think this strategy will be frustrating... bc the engineering to do so will be timeconsuming and the reward almost nothing

Re: Maximum Number of Capped Tetras?
 

i think if a robot can do 3 that is goign to be very good and any more then that will be amazing

Re: Maximum Number of Capped Tetras?
 

the more I think about it, and after i lifted one of the tetras i think that 3-4 will be a good stack and anymore will be from a really good team.

Re: Maximum Number of Capped Tetras?
 

I can't possibly see anymore than 3 or 4 ontop of a single goal..unless someone is trying to dump more then 3 or 4 at a time (and even if they are) I think we're going to see some self or assisted tipping of robots....

Re: Maximum Number of Capped Tetras?
 

During the two minutes of the match, an efficient robot will be able to place more than 7 on goals I think, if they have everything going for them. This also assumes that most of the tetras will be placed on goals near the loading zones, not on the other side of the field (I think a team could get maybe 3 on the other side of the field, with robots playing defense).

The maximum height of a stack on a goal, I think no more than three or four because the stacks start to get very high, and most teams will be incapable of making an arm that can go high enough without tipping their robots over. These tetras are 9 lbs after all.

Re: Maximum Number of Capped Tetras?
 

you know what i just noticed right now, tetras can be used as a counter weight. so stack a couple on top of your robot low down, or even just drag them around but have a firm grip over them. then you have more weight at the bottom so less chance of flipping. and also since your total weight goes up, other robots will have a harder chance moving you.

Re: Maximum Number of Capped Tetras?
 

I think a very good capper will be able to cap as many as 7 tetras on one goal. The robot would have be pretty quick and the grabbing mechanism would have to be very consistent, but its possible.

Re: Maximum Number of Capped Tetras?
 

WOW! i thought that 4 was a good number but i see the CD community thinks otherwise and we better make a darn good robot! :o

Re: Maximum Number of Capped Tetras?
 

Considering tetras stacked in different goals, I think 7, maybe 9, is a good number.

Re: Maximum Number of Capped Tetras?
 

Assuming a robot can cap goals with a stack of 4 tetras at a time, I think the possibilities for 7+ are pretty good.

4 a stack per goal is a good number, though.. at least.. I think. If anyone can do more than that, I'll bow down and worship ;)

Re: Maximum Number of Capped Tetras?
 

The idea that a team could add additional tetras onto their robot as ballast to counter the tipping problem makes a lot of sense.

Re: Maximum Number of Capped Tetras?
 

I have to agree with you on this. Our (Team #1288) measured the space between each small stacked tetra and it came to be about 4.5 inches between them. So all you people who think that you can get more than 7 stacked need to remember that there is a certain height that your robot can't exceed in the arena( not the height requirements but an arena restriction.) So I don't see you getting more than 3 or 4 at the most. THANK YOU AND HAVE A NICE DAY!!!!!

Re: Maximum Number of Capped Tetras?
 

what is the field maximum hight anyways??

Re: Maximum Number of Capped Tetras?
 

i'd say you could stack as high as you can... meaning as high as your robot can reach

Re: Maximum Number of Capped Tetras?
 

I'm thinking that it's going to be difficult for teams to be able to cap 4 at a time. They'd need a pretty strong arm to be able to lift a 36 lbs in tetras (which is about 28% of your robot's weight) AND since that's being lifted away from the robot, that's going to be a lot of torque on the manipulator. Then you need to worry about weight distribution even if it can carry the torque load. Certainly this is possible, but difficult. I will be impressed to see 4 stacked at a time.

Re: Maximum Number of Capped Tetras?
 

someone who can stack 4 at a time consistently, or even semi-consistently will win many awards and/or regional titles.

Re: Maximum Number of Capped Tetras?
 

I agree that stacking 4 or more tetras at a time will put a huge amount of stress on the arm, and will make the robot very unstable. I believe that most robots will attempt to manipulate one at a time.

I can see a strategy between teams where one robot would go get tetras, where another one would stack them. this way I can see many tetras all over the field.

Re: Maximum Number of Capped Tetras?
 

7 tetras will not exceed any restrictions in an arena. Consider last years field: we had a 10' tall bar in the middle and many teams exceeded that by a foot. To get one of the eight shorter goals that high would require 10 tetras to be stacked on it. I am not sure how much taller the center goal is, but I am pretty sure that you should be able to get 7 tetras on it before getting 11' in the air. And the 11' is just based off last years field. I am sure that you are allowed to extend past that (until it becomes a safety hazard). I do however think that 5-6 may be the tallest stack we see.

Re: Maximum Number of Capped Tetras?
 

What part of the rules is that restriction in? I can't find it anywhere...

Just a little side note: Team MOE had a 30 ft tower inside of their pit at one of last year's competitions...

Re: Maximum Number of Capped Tetras?
 

I'm sorry, but anyone who thinks that any single robot will be able to stack 7 or more tetras has obviously run no tests. Either that, or they have done completely inaccurate tests.

My team ran some tests.

In a best case scenario, it takes 8 seconds for a robot to load a tetra from the human player loading zone and return to such a position as it is able to reload another one.

It takes closer to 20 to stack a single tetra at the closest goal, using a reasonable time frame for stacking.

I think we're looking at a much lower scoring game--where the vision tetra is much more important--than anything else we've predicted, folks. The autonomous loading station isn't going to be significantly faster, because your robot still has to load tetras and leave/re-enter the loading dock.

--Petey

Re: Maximum Number of Capped Tetras?
 

It is going to be vital to stack more than one at once.

Think of all the time you spend in transit between goals. If you can even store more than one tetra on your robot, that saves you 10-20 seconds, or a good 20th to 10th of the game.

--Petey

Re: Maximum Number of Capped Tetras?
 

This is true if, and only if, your tests reflect the timing characteristics of every possible way to stack tetras. Never underestimate the ability of truly creative imaginations to find ways to challenge your presumptions! :)

-dave

Re: Maximum Number of Capped Tetras?
 

Of course.

I will try to scrounge up the data we got. I will be truly impressed to see if a team can find reliably more efficient way to stack tetras quickly than anything we tried.

I won't be unduly surprised if they do...but I will be surprised.

--Petey

Re: Maximum Number of Capped Tetras?
 

I don't know how many times my former teammates and I sat down and tried to logically figure out what an average number of scored objects might be, and what would be an unbelievable amount. I recall a team (maybe 95?) that looked like a popcorn popper (in 2002, I think) that was able to pretty much suck up every single ball on the field, when my team thought something like 1/4 of the balls would pretty much be the max. As soon as you start to put a limit on the scoring, you've made an assumption.

Of course, optimum scoring isn't just adding tetras, but adding them to the best places and ending up in your end zone.

Still, as soon as you put out a number, someone will top it (not that the highest number of tets scored will win, but never say it can't be done)