Worried about weight ?

[MrForbes]

According to my antique bathroom scale, we're at 105....and breathing easier.

[Jon Stratis]

Originally Posted by nukemknight

This is the first time we've been concerned about weight in years. In the past we've used Lexan sheets to display our sponsors and cover electronics from damage but this season we've had to print stickers and apply sponsor logos directly to the frame. We even cut our 3' ethernet cable in half to save an ounce. Currently weighing in around 124, some basic refinements should get us down to 120..

If you can get down to the point where you have a little weight to space, get some corrugated plastic (I found some at home depot, underneath the Lexan) and put sponsor stickers on that. It'll have a similar end look as if you put one big sticker over a sheet of Lexan, but weigh significantly less. For side shields on our robot (maybe 1.5'x2'), replacing a Lexan sheet with corrugated plastic saved us a little over 1kg per sheet.

[Boltman]

Team 5137 has only 6 pounds to spare (without battery) at 114lb and 77.75" high
Still thinking of adding another arm to sweep with those "extra" 6 lbs

[Dunngeon]

114.2 lbs today before our first design revision. 115.8 after

A little close, may need to make a couple pieces lighter so we can add a component or two before competition.

[Gregor]

We're sitting at 123. Changing our drivetrain cims to minicims and we'll be really close.

[waialua359]

Originally Posted by Gregor

We're sitting at 123. Changing our drivetrain cims to minicims and we'll be really close.

Know the feeling.
We spent 1 1/2 weeks losing 17 pounds down to 118-119 now.
Swapped out and/or got rid of CIMS for banebots.....6 to 2 now.
Those were easy.
Lightening or redesiging parts took forever equating that to trying to lose weight real life!

[GeeTwo]

We bagged "Peabody" about 45 minutes ago at 107.2 lb. We have an H-drive, and were worried about the CoG. We initially mounted the strafe wheel based on our week one SWAG of the final CoG. Our strafing didn't show any noticeable rotation, so we figured we were close. Weighing of the four corners shows that we missed by about 3/4". We didn't bother moving the wheel back.

We did pull about 10# of gear, mostly the front fork assembly, excluding the lift plate. This assembly has 20 spring-loaded bolts, 6 limit switches, a flipper/holder "plow", and two rows of RGB LEDs. We weren't happy with our reliability at lifting the totes, so we'll be rebuilding this part before Bayou (week 4). After seeing some of the week 0 reports, we may opt for a fixed (and thinner) grabber than our 10-32's.

This leaves us another 12-13 lb to play with to stay at/under weight, and another 7-8 lb of fabricated spares in our withholding allowance. We may use some of the weight on some bits to help align stacks as we build them, and the rest on ballast to get the COG right, and to increase the weight supported by the strafe wheel, which seems a bit light; the aluminum angle must be flexing more than we thought it would.

The programming team is meeting Monday to work on sensors and automation using "Atlas," which is the first built of our robots. Apart from the bits that were not finished or need rework on them, the two are nearly identical. The biggest difference is that the two fork assemblies are built on different spacings between the vertical risers; this is another reason we pulled the fork assembly.

[Oblarg]

Without pneumatics and electronics, our robot weighs ~90lbs.

We're not worried. In fact, we're so un-worried that we even added some fairly hefty handles to our robot so that we can pick the thing up without torturing ourselves this year.

[Zebra_Fact_Man]

We weren't worried, then we weighed in at 145lbs!!!
Today is weight-loss day. We have a plan that should take 28 pounds out of the frame. Wish us luck!

[Jon Stratis]

We weighed on 3 different sets of scales (outs and ones provided at two week 0 events), and all agreed... 113 lbs.

Then, we broke a critical component of the robot and spent probably 15 hours working on a redesign. Time to weigh again... I think the redesign may add a couple of lbs, but shouldn't take us over weight.

[nicholsjj]

We understand the pain in this thread. The team had been so good with Solidworks keeping a weight chart for the robot [arts and thought they had 5 lbs. to spare. We had a parent bring in an industrial scale, thankfully, and poof they realized they forgot to add our clapper assembly as the robot's weight was at 135. After rebuilding the top of our four bar from 2X1 tubing to 1X1 tubing the robot weighs in around 119.5 with a better COG. We had to take off our fancy 3D printed numbers and second signal light though

[ishaves]

Were somewhere around 78" tall (depending on active configuartion), 42" long and weigh in at like 119.5 lbs. Ya....

[mman1506]

We're at 81.6 lbs, which is way less than I was expecting. We brought in 2 other scales just to confirm.

[Wferr]

Just over 110 on our bot. It has everything besides sponsor panels! Its nice not being underweight like last year.. (90 lbs) we always lost in pushing wars

[Gregor]

Originally Posted by Wferr

Just over 110 on our bot. It has everything besides sponsor panels! Its nice not being underweight like last year.. (90 lbs) we always lost in pushing wars

Phew! You should hold up in pushing wars this year just fine.