chassis weight ?!

[Bill Gold]

Originally posted by wysiswyg
Actually your on track. We are around the same weight area for our robot and we expect to be underweight.
36 pound frame
16 pound battery
16 pounds compressor
20 pounds completed gearbox assembly(with wheels)
10 pounds motors and nuts
That is 98 pounds with a an almost complete robot like you have it. Add a few extra pounds for control system and electronics and guess what you don't have to drill any holes in your robot. Of course our robot is a simple design and I'm estimating some of the objects weight on the heavy side

the compressor isn't 16 lbs. It's maybe... 7 max.

[skrussel]

Our base weighed in at 70 lbs, with the battery.

Our battery weighs 14 lbs., weighed on a calibrated scale at our Ford plant.

We figure we'll have to add weight to come up to 130 lbs.

[EvilInside]

Our robot weighs 66 pounds w/ motors, control board, battery, compressor, and the "extra stuff." We are good to go on weight here.

[Ken Leung]

Originally posted by The wheelman
I thought it was more around 13 pounds?

If you have different batteries from the past years, it make sense to weight each of them, and pick the lightest one for your robot at the regional. I've heard team lose a whole pound just because they switch to a lighter battery, especially to a older one. That way, you don't have to worry about FIRST scale not working .

[Alex Forest]

hmm. our battery weighs in at 13.7. Our frame is only 11.6. Interesting.

[Doug]

Originally posted by Alex Forest
hmm. our battery weighs in at 13.7. Our frame is only 11.6. Interesting.

well thats about double what it weighed last year so im not sure if its the right or the wrong direction

[Gary Dillard]

Originally posted by Ken L
If you have different batteries from the past years, it make sense to weight each of them, and pick the lightest one for your robot at the regional. I've heard team lose a whole pound just because they switch to a lighter battery, especially to a older one. That way, you don't have to worry about FIRST scale not working .

Check this thread from FIRST forum - may not be able to use any batteries other than from the 2003 kit.

http://jive.ilearning.com/thread.jsp...=330&trange=15

Our main concern is keeping one charged during the competition if you only have 2 to work with.

There is definitely up to 1 pound difference in weights among batteries, even same year and model

[Hailfire]

We've managed to get ours less than 100lbs. That leaves 30lbs of extra stuff for us. We basically have everything that we need on the robot considered.

[Madison]

With a battery, the light, drill motors, transmission, and drivetrain - as well as all other entirely passive systems (not requiring motors or pneumatics) - we weigh approximately 95 lbs.

I expect another 30 lbs. of junk to pile on before we're done.

[Gope]

Don't know specificly about chassis but our robot without any electronics or wires or batery or light weights around 95 lbs. We're pretty light this year....YAY, that gives us lots of room for some serious tweaks.

[Adam Y.]

I thought it was more around 13 pounds?

I told you guys I was guestimating them because I actually forgot how much it weighed. It's always more useful to overestimate than to under. You'll be overweight if you underestimate it enough and then underweight if you overestimate it.

[GregT]

I think there will be a lot of "interesting" chassis desings. I won't go any further because I don't wish to give away my team's design

Our frame weights 30 lbs. After we add some lexan covers it'll probably be 40... 15lb batt, the compressor is only 5ish, the light is maybe 1...

ACK.

Lets see, 10 lb gearboxes, 30 lb magical levitator...

hmmm

ACK, TIME TO DRILL HOLES!

Greg


(PS, teams at regionals... make sure your pnumatic holding tanks are empty when you weigh in).

[Specialagentjim]

Now, what im thinkin is, what happens if we say out robot weighs 130 lbs on Mercury....Its a smaller planet with less gravitational pull, therefore the robot WEIGHS less there...

..Now, if they had said your robot must have a mass of 130 lbs.....

[GregT]

Originally posted by Specialagentjim
Now, what im thinkin is, what happens if we say out robot weighs 130 lbs on Mercury....Its a smaller planet with less gravitational pull, therefore the robot WEIGHS less there...

..Now, if they had said your robot must have a mass of 130 lbs.....

That would be worse, pounds is not a unit of mass!!!!!!!

[Specialagentjim]

Yeah, but still, nonetheless, you get the concept. If we take the mass of the object, it's based regardless of weight...So, rather then edit my last post, ill juss retract what i said and say 59.09 kg. Alright, there, happy? heh