If you could Breakaway all over again...
 

I'm particularly curious and bored this morning, so here's something that's been on my mind for awhile for a thread.

If you could re-do your 2010 build and competition season over again, how would you do it differently, and why?

There was a lot of potentially missed opportunity this year. Only one team successfully pulled off the redirection strategy. Not a lot of teams had adequate ball control, zone traversion ability, or hanging. What mistakes did you make, and how would you learn from them if 2010 repeated itself? Anything from strategy to build to competition.

My answer below to kick things off.

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Strategy wise, I would have probably pursued prototyping a redirector. A lot of teams are going to say it, but 2791 brought up the idea and quickly dismissed it because we didn't think we could get the balls to reach all the way over to the goals, among other reasons. We had the "midfield oriented" design approach, we knew the center was the most important, we had the high traction... we just missed the opportunity to close the last link in ball acquisition.

In build season, I wish we abandoned hanging and spent all of that time making sure ball control was rock solid. We saw and talked to (?) 1726 and from that we thought ball control would be pretty easy to do with a roller. We obviously thought wrong. I'm tempted to say we should have tried harder to get over the bumps, but it was a main focus for our team throughout build and we were nearly there. We just ran out of time at the end to get over.

In competition, I wouldn't have changed a thing. We drove as we probably should have for both events. We picked great partners both times. Ultimately, we did what we came to do.


Your turn :D

Re: If you could Breakaway all over again...
 

Kicker durability. We put a lot of surgical tubing on the kicker to get adequate range, which put a lot of forces on the points where the tubing was attached. Result? Our kicker was cooked by the end of Palmetto. (1398's failed midway through Atlanta.)

Hanging and redirection would've been nice, but the complexity required to let us keep going through the tunnels means I'm not losing any sleep over those calls.

Re: If you could Breakaway all over again...
 

We would have built somewhere with less snow :)

(and stuck with one hanger idea long enough to make it work well)

Re: If you could Breakaway all over again...
 

We would have persued a vertical hanger,
gone with a a non-articulating drive train using 6" wheels instead of the 4" we used,
I would have liked to use a cam based kicker instead of the winch reset system we used.

I don't think our strategy or anything like that would have changed. I also don't think we would have built a redirecting robot. It violates a couple of our standard rules on what can win a game, in addition to the fact you need at least half a field to build and tune that that design.

Re: If you could Breakaway all over again...
 

If we had to change anything, we most likely would use a thinner wall aluminum instead of stock to make our chassis. With the new weight we would have built a vertical hanger arm. I think we would also paint the robot black with some orange, instead of orange with some black.

Re: If you could Breakaway all over again...
 

I feel like our drivetrain held us back this year. Not only was the four wheel design absolutely horrible, but the chaining on the drivetrain was extremely unreliable. If we had thought about the 8-WD and implemented that, it would have made our entire game play much more intense.

But anyways we learned from our mistakes (hopefully) and we'll have a robot with a much more reliable DT next year.

Re: If you could Breakaway all over again...
 

I would have liked for the team to have made decisions faster.

Re: If you could Breakaway all over again...
 

I think a lot of teams struggled with the decisions this year. At the opening scrimmage before the ship date, it seemed evident that teams were not as prepared as they had been in the past.

I think our hind site would have us using the IRI drivetrain from day one, and hanging much faster.

Re: If you could Breakaway all over again...
 

This was the only year I can remember in my time in FIRST that I don't regret any of our strategy decision. Where we missed was completely in execution. We knew going with a hanging recycling bot was going to be tough, but unique, so we thought we'd roll the dice.

The changes I would make would only pertain to specific design choices (materials, motor selection, etc.)

-Brando

Re: If you could Breakaway all over again...
 

Hmm, well even with a decent robot there is always room for improvement so I'll take a shot at it.

Possessor, I wished we could have explored a pincher more. Our dual stage vacuum was really good (it has the power to pick up a trackball), but the ball had to be right where the suction cup was to get a hold on it. We added "active shepherding" which was two belts in front of our robot to pull balls from the side towards the suction cup which worked well but wasn't amazingly effective.

I wish we could have built a vertical hanger and hopefully using gas shocks like teams 67 and 1625. Our original impression was that if we could score just two balls in the time it takes us to hang then a hanger was a waste of weight and build However we didn't always have the time to score two balls in 20 seconds, and as we found on Archimedes, North Carolina, and IRI a hang could have been the difference between moving on or tying as we could score the same as our opponents but 4 bonus points would always give them a win.

Beside that there wouldn't be much I'd change, maybe used a different material instead of 80-20 to avoid the weight and moving of parts.

I would say 2010 was the best year so far for our team with one regional win, one finalist, captain and quarter-finalists on Archimedes and IRI, as well as various awards to go along with it made it a very good year for our team. Even with the changes to our robot we wouldn't have done spectacularly better, I'm satisfied with how far we went! :)

p.s. Happy Birthday Brandon!

Re: If you could Breakaway all over again...
 

Thanks!

I was trying to figure out how you knew it was my birthday until I saw the birthday cake next to my name...I somehow have never seen that before in my ~6+ years on CD.

-Brando

Re: If you could Breakaway all over again...
 

Looking back on the 2010 season, I really wish we would've thought of the design as a whole from day one. There was too much of a disconnect between those designing the machine and those actually building it. In the end it ended up as more of a hodgepodge of ideas than anything.

Re: If you could Breakaway all over again...
 

I would have learned that FeedWatchDogAndWait in Labview was a synchronous call rather than asynchronous before instead of after the competition.

I would have scrapped the mecanum wheels.

I would plan to win.

Re: If you could Breakaway all over again...
 

Haha, I have my sources at Northeastern! :p




jk

Re: If you could Breakaway all over again...
 

A quick note on hanging with regards to strategy.

If your team has the ability to score more than 2 points in 20 seconds, then in theory, it would have the ability to score 12 points in a 2 minute match. Ironically. I think well over 50% of the matches in qualifying had a winning score of 6 points or less.
With an auto-mode that scores 2 from midfield (there is a straight line angle that an 18" wide kicker can kick both 2 balls from mid-zone into the goal), and two points hanging, this would mean that you would only have to score those 2 that came back into the midfield (2 scores in 100 seconds) to score 6 points, on your own without changing zones. This by itself would have won the majority of FRC qualifying matches.