Let's See Your Robot's Battle Scars
 

With a a ton of defense being played, and some overburdened referee's, this year is shaping up to be a rather "painful" year for our robots. So I thought it might help to have a place where we can all share our pain together :D . So feel free to post pics of the battle damage your robots have suffered this season.

Here's ours: these are our lift cylinders after one of our elimination matches (pics stolen shamelessly from one of my fellow mentors). We actually had a third cylinder damaged earlier in the regional, but I didn't get any pictures of that one.

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We just finished playing at the Palmetto Regional.

We had 3D printed CIM mounts that were completely destroyed during one of our last practice matches, we spent the whole night 3D printing another set.

Also we went through about 4 encoders.

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Our team, also a CIR, destroyed out pickup... about 4 times.

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Those pictures confirm the concerns I've had since kickoff with the extensions being 20" and the field being ripe for harsh defense.

Also, long cylinder rods outside the bumper zone are just asking to be damaged. The lever are is just too long.

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Actually, those cylinders are entirely within our bumper zone. But we will be adding some additional protection for them at Wisconsin. :D

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I think my team may plan to add foam spikes to scare away defense for our robot. :)

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Here's a couple views of the FEDS' robot after a non-penalized frame perimeter infringement.





The shield did what it was designed to do. It protected the LEDs, the camera, and the radio (the camera and LEDs are aimed up and to the right). We would have liked to put the radio somewhere else but we didn't have the room.

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This was a bumper mount that had been ripped and the bolt holding it on was stripped through the frame. This happened from inside the frame contact in QF 1.1 and was not penalized and resulted in us being disabled.


This was the replacement for a flap that was bent and snapped. That happened because of inside the frame contact that was not penalized and resulted in us not being able to pick up a ball at the end of the match.


This was a battery tray. the bent part snapped and broke after a high speed hit in QF 1.2. Did not affect anything for that match, but it still was a hard hit.

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We had some complications with our shooter at Palmetto.
Turns out, the 1x1 versaframe couldn't handle the force of our hard stop and over time began to crack. Eventually, our shooter basically just broke in half. Thankfully it happened during testing in the pits rather than during a match, but it was not fun to have to replace the entire thing.

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Just to be clear this is because of a catapult hard stop right? We are using the versa frame as well but not for the same application.

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Folks, the 1" x 1" Versa Frame is only .04" thick. It's a really bad pick for serious structural applications.

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Do I want to know how you found this out? Or are you just saying this because of the fact its .04 thick?

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Just saying this based on the thin xsec. We didn't use any Versa Frame.

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It's hard to pinpoint what exactly caused the system to fail, but it was likely a combination of the hard stop, the amount of force we were bringing the catapult down with, and a human error where we left the shooter clipped to the frame and ran it, putting loads of stress on the entire system. (interestingly, that misfire sheared our gears first). We were using the versaframe profile shooter on our practice bot and it seemed to be holding up fine, but now I'm questioning when that one will fail, if it's not about to already.

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Beat me to my own post! :yikes:

Nothing some 2x2x1/8in angle couldn't fix. Still though, watching a chunk of your robot fly off after a hit is... disconcerting.

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That netting didn't get dinged during inspection as an entanglement hazard? Wow...

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Looks like CIR wasn't the only regional that had problems with upside-down robots.

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I was amazed at what made it through inspection at palemtto, I saw robots where the bumpers where held on by zipties, dragging on the ground. I saw teams with bumpers that had notches cut out of them that clearly didn't meet the bumper rules. I saw teams that didnt have white numbers on their bumpers. And then i saw a team that had so many numbers on their bumpers you couldnt tell what team they where. (some digits where even upside down)

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The netting bot was shaky, the ball got stuck in it a few times.

In one of our qualification matches, an opposing robots bumpers were spread out throughout the field. While that team was still playing insanely aggressively by ramming and drive over other bots.

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This isn't exactly a battles scar but is some pretty severe damage. One team at Southfield districts burned through the carpet and into the floor with their drive train when they were stuck against a wall.

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Our practice bot during testing. The 1"x1"x 1/16" wall tubing used to be parallel with the one below. Our dampening springs were not performing and the sudden stops took their toll. We have some reinforcing to do on our bagged robot Thursday at Dallas.

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That looks like an awful lot of bending moment.

I hope gusseting to the lower beam is a big part of your plan!

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^the laser is already burning :D

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Same was noted in the Alamo Regional. Gold numbers, numbers being painted on the Thursday with finger paint. The quality control of bumpers is a lot laid back in the States. Waterloo would not have passed those bumpers. Regulations should be across the board. I understand it's week one but something tells me some of these were not all rookie teams...

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Don't have a picture but we broke one of our hockey sticks in our match on Friday at the Alamo Regional. Thank goodness we brought extras to Texas! Nothing a little hockey tape wouldn't have fixed anyways! :)

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Any additional fallout after this week's events? Haven't had a chance to watch much of it, were the hits bigger? smaller? Interesting to see how other people faired so we know where to beef up our own mechanisms.

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There's no pictures of it, but we shattered a carbon fiber rod in our third match after taking a pretty hard hit.

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link

Saw this elsewhere on CD.

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We got sticker shredding and a paint scuff from a different bot from a bit of defensive contact? I mean that was about as bad as our robot got. I guess we weren't as aggressive as everyone else haha.

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Didn't get any pictures before we fixed them, but our robot had our camera torn off, RSL torn off, pressure relieve valve handle torn off, and multiple .125 aluminum pieces bent by inside the frame contact at lake superior.

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Our worst damage wasn't due to another robot, but due to crashing into a wall. We bent the forks on the bottom of our pickup pretty badly. Luckily we brought along a half-dozen extras, because we knew those would break in heavy match play.

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We still dont know when during the match or who, but our aluminium square tube frame was hit inwards around 3 inches! Its a 2 tier chassis, and both were. Quite alot of hammering!

We also destroyed 125's cylinder used for opening a catcher (i think) it was bent quite far. We apoligized and still feel sorry. Groton had some tough and especially fast defense

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We lost a roller on our 6" Vex Pro Mecanum in our first quarterfinal match...

http://t.co/qgwDdGYdPZ

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I'm not sure who did it (I was working field reset), but on Thursday, one of the low goals by the red driver's station at Crossroads took a gnarly hit (see attached picture). It was "fun" getting the box to fit back together (it took some hose clamps to keep the box from springing apart). While it doesn't look like much, consider the size and thickness of the tubing...

What else did I see? Besides 1108's smoked wiring in finals match 1 (and impressive comeback in match 3), I do recall a team letting the smoke out of a 550 motor, prompting the FTA to grab a fire extinguisher (not needed luckily).

Another team that I will not mention had an acrylic motor shield shatter upon a collision, deflating a ball with a loud pop and creating a lot of shards.

Two teams (1108 was one of them) had go pro cameras fall off their bots and get sent for a ride (I bet that made for some interesting footage).

Although not quite a scar, yet another unnamed team used 3 baggies of lead shot, held in with duct tape, as a ball manipulator counterweight... which came loose one match, releasing the baggies on the floor. All 3 burst when hit by other robots, which made a huge mess, like a "marbles on the floor" prank (such as in the Home alone movies or Animal House). The most memorable part: the sound created by the Vaccum cleaner when the shot was cleaned up.

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Ouch!

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Our later alliance partner 330 gave us this gnarly cut in the duct tape on the side of our loader arm. All of the edges are pretty scratched and torn but this one stood out to me.

There's a little bit of yellow on it actually, and a little more on the side. At first I was worried we hurt 330, but after I found out it was okay we laughed about it later.

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One of the teams at Crossroads took a huge hit bending the cross extrusion on their AM14U drivetrain. That's almost 1/4" thick extrusion.

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We bent two of our drive base endplates pretty bad practicing without bumpers. Fortunately we have some good bumpers to use now.

Here is what they look like intact:

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Our intake roller got took a hit and it was a scramble to get all the parts ready for the next match. After we got all the parts back in we quickly got to the queuing and 30 seconds later to the field.
http://www.chiefdelphi.com/media/photos/39953?
http://www.chiefdelphi.com/media/photos/39954?
The robot also lost most of the two side ploycarb sponsor/protection plates.

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This frustrates me to no end because during our inspection (rookie year) everything went perfectly. Besides a few sharp edges which were easily filed down there was no issues with wiring pneumatics structure, nothing! Our bumpers were by the book. They were firmly secured 8in around all corners but they were 1in to close to the ground. He made us build an entirely new mounting system for our bumpers the day of. We got our inspection pass sticker as we were in queing for our match. I had never been so mad ever and hearing this makes me so much more pissed off... Rant over :)

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pic.twitter.com/aC0ALtOZyO
2471 had this happen at Oregon city

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Emphasis mine. The bumper rules have changed slightly this year. The numbers are no longer only allowed to be white per R28.

I'm still not sold on the changes to the rule.

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I hope at some point my team posts some pics because we had extremely physical defenseless played on us at Lake Superior and have many battle wounds because of it.:deadhorse: ::ouch:: :deadhorse:

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Thankfully, no visible damage after PNW Glacier Peak. We do have a large quantity of paint from other robots well inside our frame perimeter. Gonna have to do some touch up work this week.

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706 Superior battle damage some of it any way didn't get pics of the worst

You can see that piece of square tubing is supposed to be parallel to that ruler and is bent in about 2 inches as well as having the end 3 inches bent down about an inch with the rivets ripped out and the belting torn off.
We also had our ball centering device which is a piece of .125 by 3 inch piece of aluminum and is well within our frame perimeter bent at almost 90 degrees over the last 3 inches. No pic because we were in finals and had no time to waste.
Was a lot of fun though
also had metal sheered off as seen in this pic.



Build em strong this year!!!!

Re: Let's See Your Robot's Battle Scars
 

A lot of these failures are not terribly surprising.

Our contribution:


This failure was not unexpected, so we'd brought along the drive pods from our practice robot as spares since they were designed to be easily replaced. We lost two rollers during qualification matches, discovered it before elimination matches started and replaced the pod after our first quarterfinal match. We broke another two rollers on a different wheel pod during the elimination rounds, but played with the broken wheel.

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Our worst problem of the week was that we threw a keystock in one of our intermediary axles that caused the wheel on the transmission shaft to throw tire treads constantly. It took us riveting and ziptying the heck out of the tread to rectify the situation. And we also completely shattered a window motor into pieces, but it wasn't working anyway so no one really cared.

Additionally, we had our sponsorship lamination ripped in 2 places, we broke a chain, and some of our surgical tubing came undone. We kinda got the crap beat out of us/did some of the beating ourselves.
For once though, nothing electrical or structural!!!

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We didn't have anything break, but we have alot of scratches and scrapes on our intake. Our side panels also kept getting bent in because of all the defense. Some other robots fared alot worse in Oregon though.

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http://www.youtube.com/watch?v=6aEw8hRqvG0

We broke our pickup arm and several of our Pneumatic Pistons from defense this year. Here is a video of Semi-Final Match 1-2 where our pickup completely breaks off after our last piston breaks. We had to emergency stop our robot to prevent any more damage. Even though we did break our pickup for our robot, we still had a lot of fun and had a great laugh from it. :) Can't wait till this weekend to have our new more robust pickup attached. :D

We also broke several hex bearings and chain that was also attached to our pickup.

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you see the red brace (second pic) the one on the other side of the bot has a large dent in it.

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3634 had a bit of a rough time. We ripped apart 3 window motors that were powering our "el toro" style intake. After the second one broke, we decided not to put the arms down anymore, then when the third one broke (still inside the frame perimeter) we took them off entirely. We also lost our battery in several matches where the velcro that was holding it on ripped at the bolt attaching it to the frame. Shout out to 1699 for helping us rebuild our battery box! We had no further battery issues after that.

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This was damage sustained during the Central Illinois regional.

We didn't get much damage at GKC other than scratching up some of our powder coat, and some black scrapes on our collection roller.

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In our first practice match.

http://www.chiefdelphi.com/forums/at...d=13950196 67

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This thread is great!

What was this gear used for, and what conditions caused it to fail?

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A team next door to us at the Sacramento Regional pulled out 2 of those "toothless" gears from their drive train.

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2 of 1388's wheels suffered this damage at the Sacramento Regional during the first elimination match. Andymark is actually contacting us for information :P

My team (3548) while playing defense got our sister team's (1188) intake roller stuck in our chain between the chain and the sprocket. Ask anyone at the Howell district and they will tell you it was brutal. I had to take the chain off on the field. I do not have pictures but I'm sure someone on chief Delphi does

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It was on our drive. Our center wheel is directly driven by the output shaft of our gearbox. This gear was cantilevered and was 1.5” from the nearest bearing. We replaced it with a steel gear which broke too. We ran only in low gear, which was also cantilevered, but worked well. We’re going to try switching to 20 degree pressure angle gears that are .500 wide and supporting the shaft on both sides of the gear.

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We were competing in Dallas this past weekend and experienced some "contact within our frame perimeter" causing our pneumatic shooter to stop working.

https://plus.google.com/u/0/photos?pid=5991806169142267842&oid=100961862719407 130044

Looking around the pits at the other robots, I saw a bent frame and collector on one of the top robots. Another had a severely bent shooter which was quickly fixed. I later saw that same shooter caught under some frame members that it had no business being under. The team members had to use brute force to flex the shooter and frame to get it back out.

Our driver collided with one of the top robots, knocking the power cable out of their router and stopping them for the rest of the match. One of Spectrum's alliance partners suffered a broken collector but managed to use it to make one last pass to Spectrum for assist points. One of the robots in the semi-finals or finals was dragging an air tank as it drove around the field for a good part of the match. Surprisingly, it did not pop off nor did another robot run over it in all the chaos.

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our ball pick up was actually designed with the purpose of getting hit and bent, we made is so that if its gets bent and warped out of shape they will still work for the rest of the match, and we made them so they are very easy to replace a simple clamp you remove and they slide out, we then produced about 5 of them so that after a match in which it get bent we can replace it with a new one then straighten the bent one as much as possible during some down time so that we can re use it if needed, works absolutely perfect At WPI we replaced the sticks twice during the entire competition, took about 30 seconds to do so.

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I'm sorry for your damage. How are you going to add protection for them, we have a similar design.
Thanks!

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Day 1 at SCH

• An obliterated camera mount and LED ring
• 2 ruined drive pulleys (both our fault, 1 touching the cart when testing, the other got Loctite on it a while ago and just failed)
• Intake roller shaft belt way out of place
• 4 intake cylinders bent (we actually managed to bend them back in place the 2nd day as we ran out of spares :P )

Day 2 at SCH

• 2 more bent intake cylinders, by this point we repositioned them to a more protected spot on the robot.
• A sheared off Performance wheel (I know, I know, only 3 bolts, we were in a hurry from the loctite pulley :P )
• A little something unexpected

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1st match of the day in Mt Vernon on Saturday. Our loader got hooked in some manner and failed spectacularly. Had the spare swapped in and running 5 minutes later and we were 100% up and running in time for the next match.

Redundancy and resiliency are critical this year.

We kept the trashed loader as a keepsake :D

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did anything actually break? It looks like everything came apart at the connectors. Were you using PVC cement?

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Yeah, everything was glued. There are actually chunks of shattered pipe in those connectors. Normally the passive PVC loader design we used had a ton of extra flexibility. Not this time.

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We have a pinch guard over the drive pulleys of our forward intake motor which, when down, happens to be the outermost point of the robot. We crunched that 1/16 inch aluminum at least once each match, and that's our only real battle scar, unless you want to count a robot cutting through 4 layers of bumper material... :eek:

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Half way through one of our qualifying matches, we found that we were driving with what seemed to be 50% of our normal drivetrain power. Pulled it out after the match to find this.

2 of our wheels were gummed up with field marking tape. One of the kit hex bearings broke as well, I suspect as a result of the immense belt load seen when driving with our clogged pulleys.

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Can anyone top 801 and 1592's 2013 trailer accident? :D
http://oi57.tinypic.com/3507wag.jpg
http://oi61.tinypic.com/110eu5i.jpg

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Didn't get any pictures but we managed to crack welds on both our primary and backup intakes at the Virginia Regional. Fortunately we were able to get some nice gussets made up by the NASA machine shop and rivet everything back together :D .

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This BAG on a 10:1 VP powers our intake. It spends most of its time inside our frame perimeter or out of the way above our roller claw. After our first QF match (or, at least we noticed it after our first QF match), it looked like this. Much to our surprise it continued working through the remaining QF and SF match ups. Once we can unbag, I can't wait to open it up and see what it looks like on the inside.



Our drivers station overhung our robot cart and got banged by a trophy case in the hall en route to a match. Of course, the laptop screen decided that this would be a great time to go belly up. Luckily, we had our classmate in the pit.

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We've had about 10 of these in our drivetrain break.
They're significantly weaker than last year's hex bearings.
We actually ran Finals-3 of Tech Valley with a bearing and a wheel missing. 5 wheel drive instead of 6.
We're in the process of taking the 2013 bearings from last year's practice bot off to put on this year's robot.

Also at Tech Valley, in our first qualification match, our catapult snapped in two a few shots after a bad dryfire in autonomous.

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Here's the front cross brace from our AM14U chassis during Eliminations at the GLBR District. This year we took a gamble with the KOP chassis for the first time, like many teams we also highly modified it -very little is left "stock" aside from hole patterns- and we actualy found it to be a great product/value. We also found it easy to interface with our staple building material, 80/20, making iterations and repair/replacement relatively easy.

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We had the same thing happen to us also causing us to miss an autonomous shot one match. I'm sure the field crew always wonders where all that tape goes.

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Robot is just fine, but 3rd Q-Match before the picking begins Saturday morning....FRC Driver station up loaded on the Laptop LCD and ready to play, robot already placed on the field and the drivers station panel is placed on the shelf, our drivers are ready to battle.....A cable from the drivers station gets caught on top of a jeans belt loop (my son's), while walking away heading back to get behind the line and wham.....The whole panel flops off the shelf upside down and all the weight lands on the edge of the display lid top edge. The display plastics of that Dell 1502 Laptop is fine, but the LCD is cracked (shattered), internally, the screen is rainbowed pretty colors in the shattered corner and just white everywhere else (they cannot see a thing on the screen), and they went on and played the match w/ it like that, and won. (The FMS is absolutely great!)

Luckily that added Dell accelerometer program came on that unit, and the HD must have parked momentarily during the fall, as the HD checked out just fine.....They borrowed a classmate from FIRST AZ, and a monitor to see by, while they copied off the programming and loaded it up for the last 2 Q's and elimination rounds.

Sure enough both BU Laptops were left at the shop 3 hrs. away (First time in years). New LCD will arrive tomorrow, $59.00 and they are back in business again.
---------------------------------------------------
Things could be much worse for sure after looking at ALL the pics in this thread...Ouch on the laptop above...Snipped...."Of course, the laptop screen decided that this would be a great time to go belly up." Decided to? OK..Lol.

Something tells me that laptop screen didn't have any choice whatsoever, in that situation at all! That is much worse damage, and looks like it was run over by the loaded robot cart too!...Though if hooked up to an external monitor and that drive is still OK (Disk Check and a defrag w/ Defraggler (Piriform.com), use the Health Monitor bad sector check), all the rest looks quite fixable. Doesn't sound like the unit was on, so the HD should be absolutely fine.

E-Bay is your friend for new & used puter parts. Our drive was powered up and spinning when it flopped to the carpeted floor from the shelf. Luckily the G-Force had to be just enough to park it first before the hit. (Not a bad sector found).

And that Gummed Up Wheel and the bearing...Whoa, took some real force to break that bearing like that. I see a lot of added "character" in the pics, as they call it in NASCAR.

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Ian, what make/model is that laptop? You check the hard drive, I'll locate the parts for you. Upper Clamshell and LCD are fairly cheap.

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So, we got a little bit of the field tape in the drive-belt....

http://i.imgur.com/wTnriib.jpg

Attachment 16684 never again will I doubt the power of a cim motor

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We knew that we would be missing our driver for the first few matches of Friday so on the practice day we were training a backup driver (who may or may not have been me, I cannot say either way ;) ) anyway lets just say that a robot with an extended intake travelling at 15 fps plus the low goal makes for some interestingly shaped parts - linked picture of a bar on the linkage that drives our intake.
https://www.dropbox.com/s/5ql19wsbz6...2015.58.51.jpg

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At the Peachtree regional 4468 has had 2 main things happen to us. First we picked up about 10 ft of field tape into our belts during auto one match. Enough tape was sucked up to completely derail our belt. The second thing that happened was we snapped a bumper in half not the short way but long ways (2ft long) sadly I don't have a picture of it though.

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Long Island didnt see too much bad damage from what I could tell. The extent of our damages were a tread broke off a wheel and we didnt realize until the next day, one belt hub cracked in 20 different places and bent a bolt holding it after a particularly hard hit and we slightly bent our harvest wheel but it fixed itself over the course of the day.

Overall me and the rest of the pit crew had a very relaxing weekend of just reloading the air

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Week 5 Livonia Finals were very physical.

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During the WAAHS QF4.3, our robot got bashed, slammed, rammed, and even slashed. A mechanism from Bear Metal cut rope, elastic cord, and surgical tubing from the insides of our robot. Furthermore, CHUCK's bot bent in our intake from the front, and from the side, resulting in bent pistons and the near destruction of our intake roller and it's subsequent crossbar.

Horns of Havoc, one of our alliance partners had 3/6 of their 6" Hi-Grip wheels shattered due to CHUCK's excessively aggressive defense. Their intake too, was nigh destroyed due to bent pistons and broken joints. (Their intake, instead of lowering, does a scissor-like extension.)

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We've got a big dent in the front of our AM14U, two PG188's with the output shafts sheared into two pieces, and a very bent hard-stop on our roller arm. I'll post pics later if I have the time.

That said, the gearbox failure was the fault of insufficient design (never considered the torque generated by the arm getting hit hard while it was being actuated down), and the frame dent didn't affect structural integrity and seems to be par-for-the-course (we're going to swap out that frame section and reinforce it with a steel bar for our next competition).

It's a very rough game, but not cripplingly-so. Worth noting that we were on the giving side of the defense after our arm went out of commission, not the receiving; but I don't think we caused any significant damage to other robots. We certainly tried to push rather than ram, and to avoid extended appendages.

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In the last Friday match at Livonia, we got the gaffer's tape stuck in our 8 wheel, #25 chain drivetrain. While struggling to get loose, we broke two chains, threw four others, and our belly-pan electrical board fell off. Thankfully, we were able to fix it before opening ceremonies on Saturday, but the damage was very scary looking.

Re: Let's See Your Robot's Battle Scars
 

We, too, had a dent in the front of our AM14U (self-inflicted because of our own aggressive defense play-style and an opening in the bumper for ball intake). To repair, it took a 2x4 and a hammer. We subsequently supported the middle front of the AM14U.


Agreed. If your 'bot is built well, and you keep your appendages in (as much as possible) you should not suffer too much damage (nothing that you cannot repair easily).

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In our last match at QCR, the window motor operating our pickup forks got stripped, leaving the forks sticking out of the robot's general protection. Two walls, three robots, and one particularly fast ball later, and the damage was done. We are building more robust ones for the WEGL regional this week.
https://www.facebook.com/photo.php?f...type=1&theater
https://www.facebook.com/photo.php?f...type=1&theater