View Full Version : How much does your robot weigh?
My team has weighed our robot minus a few very important subsystems, and we are alarmingly close to the weight limit. Naturally our next thought was how much does everyone else's robot weigh now? What are you all doing to remove weight? Thanks!
DonRotolo
07-02-2012, 17:26
Holes. Lots and lots of holes. They don't weigh. :eek:
http://www.chiefdelphi.com/forums/showthread.php?t=98765
You can look through that thread and get some pretty good answers for both pre and post building.
Short answer? Swiss cheese the robot.
blackrocks0
07-02-2012, 21:10
If you do swiss cheese it, watch out for how strong the areas will be after swiss cheesing them.
Also, think about getting rid of unnecessary components of your robot (you should think through this a lot).
Andrew Lawrence
07-02-2012, 21:21
I can't believe it but we're going to be....under the weight limit this year. :eek: Our robot is going to be anywhere from 90-100 pounds. This hasn't happened to 256 EVER! The scary thing is, though, once we're all underweight, we'll add more weight to get to 120 pounds, since that is our weight goal for this year (Gotta balance those bridges, you know.)
Well, for now, our robot weighs only about 65-75 lbs, and that's not even with our lift and shooter systems yet...We can't totally get a clear exact weight because our force plate isn't big enough to fit our robot.
However, we would like to make this robot as close to the weight limit as possible, compared to our rookie robot last year that weighed only about 98 lbs and costs less than $1100 minus the 2011 KOP parts.
372 lives on
07-02-2012, 21:44
roght now our robot weighs 15 pounds.
we have a few more "minor" additions before it is done.
Seth Mallory
07-02-2012, 21:46
We have put ours on a treadmill. It should shed those excessive pounds and be in shape to compete.:)
roght now our robot weighs 15 pounds.
I hope that is withOUT the battery, otherwise you has a slight issue (The battery IS 15lbs...) XD
Our robot will weigh 119.999999999 lbs roughly
372 lives on
07-02-2012, 23:33
I hope that is withOUT the battery, otherwise you has a slight issue (The battery IS 15lbs...) XD
weird our batter doesnt weigh 15 lbs. :( no fair you get more power !!!!!
Well, 15ish lbs, give or take
Andrew Lawrence
07-02-2012, 23:40
I hope that is withOUT the battery, otherwise you has a slight issue (The battery IS 15lbs...) XD
Our chassis weighs 14 pounds, WITH the battery. :p
On a more serious note, 15/120 isn't much, but it's a pretty decent amount of the robot weight. It's like a whole apparatus. It seems like the battery can quickly change the center of gravity on a robot depending on where it is. Unfortunately, our center is hollowed out to take balls in, so it looks like we'll either have to find a new place for our battery, or put it on top of our shooter, which probably won't work very well.
Our chassis weighs 14 pounds, WITH the battery. :p
On a more serious note, 15/120 isn't much, but it's a pretty decent amount of the robot weight. It's like a whole apparatus. It seems like the battery can quickly change the center of gravity on a robot depending on where it is. Unfortunately, our center is hollowed out to take balls in, so it looks like we'll either have to find a new place for our battery, or put it on top of our shooter, which probably won't work very well.
Spoilers :eek:
Andrew Lawrence
07-02-2012, 23:55
Spoilers :eek:
(Read in a sarcastic, monotone voice)
Yes. 256 is going to have their battery mounted on the very top of their robot this year. :|
:D
We are at 70 lbs in cad.
And that is without electronics and pneumatic [no compressor].
We should be just about 110 fully loaded.
(Read in a sarcastic, monotone voice)
Yes, It's not like I bolded anything.
:ahh:
Andrew Lawrence
08-02-2012, 00:04
(Read in a sarcastic, monotone voice)
Yes, It's not like I bolded anything.
:ahh:
I know! I just knew that if I mentioned something totally different, than someone would catch onto it. :p
372 lives on
08-02-2012, 00:04
(Read in a sarcastic, monotone voice)
Yes. 256 is going to have their battery mounted on the very top of their robot this year. :|
:D
o.O i JUST DECIDED THE SAME THING 5 MINUTES AGO. WE AR HAVING ALL ELCTRONICS ON OUR SHOOTER TOWWER WITH THE BATTERY LOCATED DIRECTLY ABOVE THES SHOOTER!!!!!!1!!!1!!
o.O i JUST DECIDED THE SAME THING 5 MINUTES AGO. WE AR HAVING ALL ELCTRONICS ON OUR SHOOTER TOWWER WITH THE BATTERY LOCATED DIRECTLY ABOVE THES SHOOTER!!!!!!1!!!1!!
I think someone needs less mountain dew and more sleep :p
Andrew Lawrence
08-02-2012, 00:09
I think someone needs less mountain dew and more sleep :p
BEST. THING. EVER! :D That saying just made my day!
BEST. THING. EVER! :D That saying just made my day!
That HAS to go in my signature!
On an unrelated note, I probably just described myself. Haven't gone on an all caps rage yet, but there's always time...
Andrew Lawrence
08-02-2012, 00:23
That HAS to go in my signature!
On an unrelated note, I probably just described myself. Haven't gone on an all caps rage yet, but there's always time...
Thanks! :D
372 lives on
08-02-2012, 00:47
no really we don't want our "shooter" flying off the robot and we need the battery weight to hold it down.
Garrett.d.w
08-02-2012, 01:25
The first iteration weighs approximately 120 pounds, without any weight reduction techniques. This is very strange for our team :p
CAD is a lifesaver.
davidthefat
08-02-2012, 02:10
Drive itself is 86 lb, with the electronics board, about 90 lb.
Ankit S.
08-02-2012, 02:48
In CAD? 93 lbs + chain and fasteners (should bring it up to about 110).
In real life? About 20. (Yeah we're behind :P)
Andrew Lawrence
08-02-2012, 09:49
In CAD? 93 lbs + chain and fasteners (should bring it up to about 110).
In real life? About 20. (Yeah we're behind :P)
On the bright side, you may be the lightest robot at SVR! How easy will it be to balance the bridge with three robots when one of them weighs 1/6th of the maximum weight! :p
JamesCH95
08-02-2012, 10:07
As of last night, with all major components mounted, approximately 107lbs.
BTW batteries weigh ~13lbs, weight adds up with 6awg wire on the battery though.
farmersvilleRob
08-02-2012, 15:14
We are looking at around 70-80 completely finished with no reduction techniques. ;) and a note to everyone using autodesk- it does have CAD weight issues that can be as high as 20-30 lbs off. Solidworks is around 1-2 lbs off. But in autodesk try to manually enter each parts' weight for a better estimate
Jared Russell
08-02-2012, 15:31
Our robot weighs 120.0 lbs. That's my story, and I'm sticking to it.
DampRobot
08-02-2012, 15:51
I remember one year our robot weighed 120.1 lbs. We were allowed to play because the scale was accurate to plus or minus .1 lbs.
With a taste of irony, our robot weighs 103 lbs. Honest to goodness truth. haha
klmx30302
08-02-2012, 17:15
As of last night our robot weighs 113.4 pounds, it still needs some wiring done though and a couple pieces of lexan put on, so its gonna be close.
Our weighs about 105 with all the necessaries on it. I guess we'll be able to put on 15 pounds of cool decorations on it this year :cool:
If the words "I can currently lift our robot with my pinkie finger" mean anything to you, Try to imagine our robot's weight. Still a work in progress, though... :D
For all of the teams at a weight of like 110-120 (like ours) I just imagine them at last min, saying "Oh no we never put the bridge mechanism on...
Luckly ours is sort of on. And on a side note, do you think the inspectors would declare a Van Door motor with just a pair of vise grips attached to it, safe? That was the first idea that popped into my mind when making that mechanism lol.
Frenchie461
08-02-2012, 21:33
we're looking at 111 as of about an hour ago, looks like it will top out at 115-120
Ninja_Bait
08-02-2012, 22:26
We are looking at around 70-80 completely finished with no reduction techniques. ;) and a note to everyone using autodesk- it does have CAD weight issues that can be as high as 20-30 lbs off. Solidworks is around 1-2 lbs off. But in autodesk try to manually enter each parts' weight for a better estimate
Is that 20-30 lbs over or under? Because we designed an overweight robot in CAD, and then gave up on trying to adjust the design and said, we'll just build it and then swiss cheese it. But it Autodesk overestimates by 20 pounds, then we have a hundred-ten pound robot.
Team 4057
08-02-2012, 22:50
we weighed our robot today and the drive with all the electronics and lexan we are at 51 lbs. we still have around 50 lbs. left to add
Peyton Yeung
08-02-2012, 22:52
we're looking at 111 as of about an hour ago, looks like it will top out at 115-120
Lucky enough to get a peak at awesome?
JamesCH95
09-02-2012, 00:43
With a taste of irony, our robot weighs 103 lbs. Honest to goodness truth. haha
Sounds more like serendipity than irony ;)
Maybe we should build a 95lb robot one year... :D
ElmoLibre
21-02-2012, 12:45
How are you guys weighing your robots, we were thinking of using a hanging scale because last year the force platforms from the physics labs were off by quite a bit
Jon Stratis
21-02-2012, 12:57
To get a "close enough" weight of the robot, use a simple bathroom scale. Set one end of the robot on the scale, the other on a block to keep the robot level - that'll give you "half" of your weight. spin the robot around, and now you have the other "half".
I put half in quotes, because it's not really half - if your center of gravity isn't in the middle of the robot, you'll see one end weight more than the other. This can be a great way to help discover and fix CoG issues.
artdutra04
21-02-2012, 13:35
To get a "close enough" weight of the robot, use a simple bathroom scale. Set one end of the robot on the scale, the other on a block to keep the robot level - that'll give you "half" of your weight. spin the robot around, and now you have the other "half".
I put half in quotes, because it's not really half - if your center of gravity isn't in the middle of the robot, you'll see one end weight more than the other. This can be a great way to help discover and fix CoG issues.Put a piece of plywood down on the bathroom scale instead, then either zero out this weight or note how much the plywood weighs. Then you could put the entire robot on the plywood and weigh the entire robot.
pyroslev
21-02-2012, 13:38
4 pounds to spare.
DavidGitz
21-02-2012, 13:43
Put a piece of plywood down on the bathroom scale instead, then either zero out this weight or note how much the plywood weighs. Then you could put the entire robot on the plywood and weigh the entire robot.
And then...what? Drill some holes in the plywood so you can see the scale?
wireties
21-02-2012, 13:58
120.3 pounds - we are looking at clever reduction strategies
roystur44
21-02-2012, 14:07
107 lbs of Robot Love
JohnSchneider
21-02-2012, 14:09
Just fill your pneumatic wheels with helium. Thatll make your robot weigh way less.
Also we're always conservative with weight during build, and have just barely hit 100 the past two years. Its nice not to have to worry about that.
wireties
21-02-2012, 14:11
Just fill your pneumatic wheels with helium. Thatll make your robot weigh way less.
Also we're always conservative with weight during build, and have just barely hit 100 the past two years. Its nice not to have to worry about that.
Those heavy-duty mecanum wheels and the 4-side intact were really heavy. We'll get under 120 w/o sacrificing any functionality.
JohnSchneider
21-02-2012, 14:13
That shooter of yours could probably take a few lightening holes.
We thought with the new frame wed be heavier...somehow we came up lighter.
wireties
21-02-2012, 14:19
That shooter of yours could probably take a few lightening holes.
We thought with the new frame wed be heavier...somehow we came up lighter.
Ours has yellow jacket-sized holes in it!! Could have more though...
Here is all 119.5 lbs of 706's "Mohawk" robot. All pink and black and beautiful.
http://s1121.photobucket.com/albums/l507/tkms002/?action=view¤t=100_0013.mp4
viperred396
21-02-2012, 15:40
Silly us didnt weigh it until jsut now and the weight was...
...
...
... 148 lbs :*(
Justin Montois
21-02-2012, 15:47
Silly us didnt weigh it until jsut now and the weight was...
...
...
... 148 lbs :*(
::Yikes::
We are at 115 lbs
Andrew Lawrence
21-02-2012, 15:53
Silly us didnt weigh it until jsut now and the weight was...
...
...
... 148 lbs :*(
Le heart attack.
Your team is in our prayers.
256 is a nice and comfortable 119, which leaves us 5 pounds for LED lights!
I know we only have 1 pound left, but we have 5 pounds of LEDs in our room, and they're not going to waste!
Hawiian Cadder
21-02-2012, 15:57
Our robot was "pre-cheesed" this year. guess the 4000 3/16 holes, and the 1500 3/8 holes helped, because it weighs 109 lbs. extra weight will be added to improve our (currently) sub par bridge and bump manipulator.
wireties
21-02-2012, 15:57
Silly us didnt weigh it until jsut now and the weight was...
...
...
... 148 lbs :*(
Hopefully that included batteries and bumpers!
DominickC
21-02-2012, 16:02
117.5 lbs after we threw a few large holes in our chassis.
viperred396
21-02-2012, 16:08
Hopefully that included batteries and bumpers!
sadly it did not :(
Here is what our robot pretty much looks like
http://img717.imageshack.us/img717/8549/robotics2.jpg
We are struggling to see where the weight is coming from :/
Our robot has no shooter or loader and is already at 120
118.5 last we checked. It's going to be just under 120, probably 118-119.5 when we compete.
wireties
21-02-2012, 16:31
For teams that are having trouble making weight a few suggestions for next year ...
1 - Keep a spreadsheet with the weight of all components
2 - Update that spreadsheet EVERY day!
3 - Appoint a trustworthy team member to maintain the spreadsheet
4 - Every time you consider a new piece of your design try to estimate the weight. it is not hard to do, one can google the density of aluminum & steel and the weight of COTS parts are usually included on their web sites
5 - Get a good scale
6 - Take the time to minimize weight in every part of the robot as you go, not at the end.
7 - Shoot for 110 or so because wire, nuts, bolts and last minute safety features weigh more than you think.
HTH
Clifford
21-02-2012, 19:38
Make detailed CAD models! Remember that the more accurate your CAD models are, the more accurate the weight they output will be. It will never be perfect, but it will give you a fairly good idea of your approximate weight.
Team 2658 is looking at a weight of 85 or 95lbs, depending on which shooter is used. Team 3749 is looking at something closer to 115lbs.
mdiradoorian
21-02-2012, 20:20
Our robot weighs about 110 pounds.
119.8 measured before bagging it up last night :D :ahh:
gyroscopeRaptor
21-02-2012, 21:12
115-117 lbs. Strange because our robot is much smaller than last year's.
touchdownjesus4
21-02-2012, 21:49
Ours weighs 119.4lbs, very very close to the limit but thankfully under.
Anupam Goli
21-02-2012, 21:50
119.4 pounds.... Cutting it too close... and we don't have sponsor stickers on there yet :(
101.3
Would it be a bragging point if you had to add weight? (Just wunderin, no offense to anyone nohow)
onecoolc
21-02-2012, 21:58
108 lbs, right now.
Adding maybe three or four pounds for our bridge-lowering-device, but that's it.
Final weigh in at 117.7 pounds.
Last year where we had to make Swiss cheese out of the lexan to get under weight.
121 pounds... But we have a lot of metal we can get rid of, so no worries there :)
Grim Tuesday
22-02-2012, 01:37
115, our first robot less than 119.9 in 6 years!
nitneylion452
22-02-2012, 01:52
109.7 pounds. Came as a shock to us because it looks and feels so much lighter.
Akash Rastogi
22-02-2012, 01:52
115
I LOVE ROBOTS!
22-02-2012, 01:54
118.95
Ankit S.
22-02-2012, 03:12
~105-110, but we plan on adding weight to balance out our COG
s_forbes
22-02-2012, 03:19
If the scale at the competition has a tolerance of +-0.1 lbs, will a 120.1 pound robot pass inspection?
Yeah, we're right at the limit.
Wayne Doenges
22-02-2012, 07:16
118.1 with the new Weight Watchers Robotic diet system :D
JohnFogarty
22-02-2012, 07:27
118 pounds on the dot.
FRC2168's 2012 unofficial weight 112.5lbs
Becca334
22-02-2012, 07:34
118.3
Jim Wilks
22-02-2012, 07:39
117 at present, will definitely be 119.9 at regional
Josh Drake
22-02-2012, 07:46
117.5 ish;)
Scale is just a bathroom scale, not sure how accurate that is, but hopefully close.
patrickr41
22-02-2012, 09:10
117lbs
but now we need to put under glow :cool:
(it was a goal for us last year)
marccenter
22-02-2012, 09:12
Not sure. No weighing mechanism in high school. Guessimating < 120 lbs
Nick Lawrence
22-02-2012, 09:16
118 LBS as bagged.
-Nick
thefro526
22-02-2012, 09:42
If the scale at the competition has a tolerance of +-0.1 lbs, will a 120.1 pound robot pass inspection?
Yeah, we're right at the limit.
At the 2008 CMP our robot weighed in at 120.1 - in a panic, we ripped off one of the decorative covers on the rear of our bot to come in at 119.9. The volunteer operating the scale was nice enough to tell us that we could put it back on as the scale had a .1 lb margin of error. I'm fairly sure this holds true at most/many/all events, but I'm not too sure.
As for 2012, we're barely at 100lbs, although we're still missing a few minor components. Competition weight on the bot should be 105-107lbs pre-ballast.
quinxorin
22-02-2012, 10:11
My team's robot is, to my absolute amzement, 110.240 lbs. (Yes, fancy scale). We're always overweight; this year, we didn't swiss cheese; we reinforced. It was amazing!
Our robot will weigh 119.999999999 lbs roughly
On a serious note, we are looking at 98 lbs in-bag and a ~16-lb withheld shooter, plus some minor bits and pieces, so it will probably be around 114 lbs. I don't know if we are planning to put a 6-lb weight on.
MrForbes
22-02-2012, 11:51
Good question...it was 110 before we added what we think was five pounds. We have a lighter appendage in the bag to fix it if there's a problem.
Chris_Ely
22-02-2012, 12:18
My team's robot wayed 128 pounds 4 days ago:eek: . We put it on a swiss cheese diet, and now it ways 119.7 pounds. We ordered plastic air tanks to replace our metal tanks which should save us 2 pounds.
Well, we guessed we'd come in around 100 lbs. Upon putting the Radiologist on our trusty bathroom scale, we were all stunned to see a weight of 115 lbs.
No worries. Still under weight, just surprising.
Took a few hours of sleep for a student to point out that no one had noticed that we had failed to remove the battery!
Looks like we'll be around 105 lbs. or so.
- Mr. Van
Coach, Robodox
davidthefat
22-02-2012, 21:14
122 lb, we are planning on swiss cheesing the giant half inch thick tensioner plate we have on the robot.
372 lives on
22-02-2012, 23:33
At the 2008 CMP our robot weighed in at 120.1 - in a panic, we ripped off one of the decorative covers on the rear of our bot to come in at 119.9. The volunteer operating the scale was nice enough to tell us that we could put it back on as the scale had a .1 lb margin of error. I'm fairly sure this holds true at most/many/all events, but I'm not too sure.
no it does not. at the Seattle competition they are very picky.. last year 120.1 pounds we took off .3 pounds of material(with 3 inspectors watching us) then weighed it again at 120.3 pounds. missed two matches...........................
When we weighed we were around 121-124.
Andrew Remmers
23-02-2012, 00:11
2757 Was at 93 before we put it in the bag... I guess we are adding more things at our first regional! :O
- Andrew
Savvy578
23-02-2012, 00:16
Our robot weighs anywhere from 112-117. The scale we had was being weird and weight exponentially...
119.5 on two different scales. :ahh:
Dr Theta
23-02-2012, 02:17
102 as of right now. We're planning some iteration on a few components, so we'll see at comp. We'll definitely be under 120 though.
My team's robot is, to my absolute amzement, 110.240 lbs. (Yes, fancy scale). We're always overweight; this year, we didn't swiss cheese; we reinforced. It was amazing!
What kind of scale is that?
RRLedford
23-02-2012, 02:46
We are well under 100 lbs, but we need to bulk all the way up to 120 lbs.
We are adding about 25 lbs of ballast weight to out far right side toward front.
Why? We drive up the bridge with most of our width hanging off the left side of the bridge and leaving room for normal bots to still pass by us on the bridge. Hopefully this makes the 3-bot balance easier with none of us protruding near the ends. With most of the robot overhanging the side rail, we really need a lot of weight on the far right just to have enough traction on the 2 wheels (of 6-wheel tank drive) that remain in good contact with bridge to get us up the slope. Lots of slipping and spinning wheels right now, but we can balance in 3 seconds from first wheel up on the bridge.
-Dick Ledford
116 pounds (most likely 118 when the signage is added at FLR).
ttakashima
23-02-2012, 03:02
We are at 122.5 lbs. We kept the shooter back, it Currently weighs 21lbs which in my opinion is very heavy. We have many holes to drill! We also still need to add our 2lb side plates at the comp with our sponsor logos!:eek:
ThirteenOfTwo
23-02-2012, 03:08
103 when we weighed without the wiring (but with electronics like CRIO/radio/jags), 108 when we put expected wiring materials on the scale too. Sixteen-pound withheld intake and eleven-pound withheld scoring mechanism leave about 80 lbs in the bag right now. At least eight of the withheld pounds come from COTS gearboxes and motors which will be brought to competition not as a part of the weight allowance.
We were at 119 lb with a couple days to go. Since the scale didn't seem to be quite accurate, and we can't be 100% sure that our manual calibration is perfect, being that close to the 120 lb limit made us a little nervous. Even if we believed our scale was perfect, it may not be the same as the one used by inspectors at competition, and we can't argue with their scale. So, we worked on a few things to give us some safety margin.
Many people talk about the "swiss cheese diet". Here are some points to consider:
Drilling holes shouldn't be your first option. We changed to a lighter sprocket, and made a lighter mount for the camera. These were engineering improvements, in addition to saving weight.
It takes a lot of holes in plastic to make any difference in weight, and that often compromises strength before much weight is shed. Target metal, especially thick items, first.
You can remove weight from any part of the main robot to get under the limit, but the location of the removed weight can impact performance. Removing weight up high makes your robot more stable and easier to balance. Removing weight down low can make things worse.
If you have decoration like lights, they count against the weight limit. We have some cool lights that everyone likes, but we had to make the decision that if we're overweight at competition, lights are the first thing to remove (I really hope we don't have to, they look too good). You might be tempted to remove panels that display sponsors, but remember that [R04] requires displaying school and sponsors during competition (plus, it's just right).
Good luck, everyone!
artdutra04
23-02-2012, 11:40
It takes a lot of holes in plastic to make any difference in weight, and that often compromises strength before much weight is shed. Target metal, especially thick items, first.Don't be so quick to immediately discredit lightening plastic components; if the plastic part is large enough, the weight savings become valuable. If you have sheets of Lexan/polycarbonate on your robot, these add up almost deceptively quick in the weight department.
For example, a 24"x36" sheet of 1/16" polycarbonate weighs in at just under 2.4 lbs; the same size panel from 1/8" polycarbonate weighs in at about 4.75 lbs (which is about the same weight as the older Thomas air compressor).
Be warned through: while it is possible to use large hole saws (2-3" diameter) in sheets of Lexan, it's not the easiest thing to do in the pits. It's much easier ahead of time to only use the thinnest possible Lexan.
Don't be so quick to immediately discredit lightening plastic components; if the plastic part is large enough, the weight savings become valuable.
I'm not discrediting it; I'm actually agreeing with what you just said. It would take a very large piece of polycarbonate to make a good target for weight savings, and then you need to put lots of holes in it to make a difference. If you have large metal pieces on your robot (sprockets, plates, mounts), you can get more weight savings with fewer, or smaller, holes. I've seen several teams (including mine, four years ago) drill a bunch of holes, get reweighed, and find that they hardly made a difference.
MrForbes
23-02-2012, 12:10
We took about two pounds of Lexan off our shooter...we didn't cut holes in it, we just cut off the excess material that wasn't needed.
As usual, you have to keep weigh in mind all thru the design and build process. If you do this, you shouldn't have a weight problem. We have a really heavy steel chassis, but we're still underweight, because we were pretty careful to use mostly only light materials on the "upper" parts of the robot.
Without the motherboard for controlling the camera our robot came in at 105 lbs. Very surprising for the amount of stuff on the robot this year.
Well, 15ish lbs, give or take
The last battery I checked that we had was 12.55 lbs, but I haven't averaged any more.
Our final weight before bag & tag was 111 lbs. With the extra bumper and battery weight to lower our center of gravity, we're not too worried to be under the weight limit. If you're over, the universal advice is to start drilling holes. We've done it in the past, and I'm sure we'll do it again. Start with lightweight stuff in the first place, and if that fails, bring large drill bits.
JamesCH95
24-02-2012, 08:04
The last battery I checked that we had was 12.55 lbs, but I haven't averaged any more.
FWIW 95's rule of thumb, from the old-school days when we weighed robots with batteries, was 13lbs/battery with the typical-length 6awg leads. Some batteries could be up to 2lbs less than this if they were older.
I definitely agree that 15lbs is a a few lbs too generous for battery weight.
kendra21093
24-02-2012, 09:51
121.2 LBS...WHYYYY??????? D:
We are at 105 pounds. We may consider adding weight to our robot depending on its performance in practice rounds
We are around 120 pounds. Our scale wasnt calibrated correctly so we are really unsure but we should be around the 118-120 pound area.
If we are over our cathodes and side panels will the first to come off. Though if we are under weight we decided we might add a second camera to assist the operator and driver.
peter1626
25-02-2012, 20:10
Three days before the deadline we finally got a hold of a scale... We were 139, after redesigning the entire front of the robot and the pickup system then we removed the protective 1/4" Plexiglass and replacing it with 1/8" with holes we were 118
Grim Tuesday
25-02-2012, 21:23
Just a note to Fingerlakes teams who are barely within the weight limit: Operation Bonde is in effect, and the new router weighs about .2 lbs more than the old one, though the mounting geometry is the same. Just so you know.
Garrett.d.w
25-02-2012, 21:29
120
and an extra .2
Though that will be easily shed after arming a freshman with a hole saw :P
Just a note to Fingerlakes teams who are barely within the weight limit: Operation Bonde is in effect, and the new router weighs about .2 lbs more than the old one, though the mounting geometry is the same. Just so you know.
The Bondé router is exempt from inspection. If you pass with the DAP, they can't weigh you with the Bondé router and fail you.
Teams will still go through inspection with their DAP-1522 (to meet size and weight parameters); the DIR-825 will not be subjected to inspection.
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