Re: Weight Watching
 

well we're at 132 nothing is cheesed yet so we should be fine

Re: Weight Watching
 

We were at 104 last weigh in Friday night.
A few odds and ends left but this should be fine.

Re: Weight Watching
 

We weighed in for the first time last night - 114.5 lbs! We just have a few more things to add tonight, but we don't expect those to be more than 2-3 lbs.

Re: Weight Watching
 

We have been flirting with 120 for the last week or so. We are trying to save weight without compromising function (no removing a pneumatic tank, drilling holes in parts that need lots of strength, etc) so it has been slow going. So slow, in fact, that we are losing weight at about the same rate that we gain it from additional parts. I think we've lost about 3.5 pounds recently... 2 of which came from replacing our nice spring-loaded chain tensioners that weighed about 1lb each with lighter, manually adjusted tensioners, which weigh about 5-7oz. We also have a lot of 1/4-20 bolts on our robot that could be replaced with 1/4" rivets to save a load of weight, but nobody on the team has a rivet gun that do 1/4" rivets :( . I think we'll just barely make it under, but if worse comes to worse, we can remove an air tank.

Re: Weight Watching
 

We weighed in at 126lbs with the bumpers and battery. Were thinking it's about 106lbs without the bumpers and battery.

Re: Weight Watching
 

We need a way to reduce weight on our robot but keep it from its structure failing. We have two Hexagonal Shapes on arms controlled by Pnumatics. On a lift of 80 200s on our sexy chasis. We already made the Hexagons SWISS CHEESE and the arms. We need teh help please!

Thanks,
Anon-Kun, 1510

/EDIT/. The arms and hexagons need STRUCTURE.

Re: Weight Watching
 

Like most years, we are nervous about our robot's pre-ship weight.

Our school teaches aircraft maintenance technology, so we have a calibrated (?) scale that is rated for 2000 lb. That scale is normally used to determine the weight on an airplane's wheel. It reports our robot's weight as 119 or 120 lb.

FRC official scales are rated for 400 lb and calibrated using 100 lb test weights. So we'll ship the robot tomorrow afternoon, and not know whether we have a weight problem until Thursday morning, nine days later, at the St. Louis Regional.

Until then we can brainstorm ways that our robot could lose some more weight, should that be necessary.

Re: Weight Watching
 

we are about 6 lbs under and we are done

Re: Weight Watching
 

Last I heard from the shop we're at 89-ish, but we haven't put in all the heavy code yet. ;)

Roger.

Re: Weight Watching
 

My best advice to you is to start up a thread with a picture of the robot asking for suggestions. It's hard to give specific diet advice from a short description. How much weight do you need to lose?

How many Clippard tanks do you have mounted? How many do you really need? They're about a pound each.

Is there anywhere you could replace steel fasteners with aluminum rivets or tie-wrap without compromising structural strength too much? I used tie-wrap to mount most of our electronics for weight savings. (Bonus: nonconductive).

Re: Weight Watching
 

we shipped at 121ish but we will drop a clippard if we cant think of anywhere else to drop some.

Re: Weight Watching
 

we are about 30 lbs underweight, but we plan on adding lead weights to help keep the balance on our robot

Re: Weight Watching
 

We are 26 lbs underweight. We will add 15 or 20 lbs of steel bar to help keep it glued to the ground.

Re: Weight Watching
 

We are 108..YAY! We never thought weight was going to be an issue with our design....sorry I don't pics, it was a fast six weeks.

Re: Weight Watching
 

We just put our robot in the shipping crate and sealed it. We weighed in at 88 lbs (although we might add ballast later).