Kinda stupid question...

I keep telling our team to use 0 instead of 1 in the code for this very reason. Since a 0 in electronics terms is a hole.

I really like how this thread, while âsillyâ / ânot seriousâ, involves students taking wild ideas and doing calculations to figure out how or why theyâre unfeasible. Applying what youâve learned to challenge even the most sensible conventional wisdom is something great to get used to doing. I wish I did it more often.

You never know when youâll run the math for something youâre convinced youâll never work. Just a few days ago, the team was convinced that the tension needed in a piece of string would not be generated by a window motor powered winch, since it was so hard for a human to do. If any of us ran the numbers to challenge rather obvious seeming conventional wisdom, weâd have known a week ago what we know now.

How much weight is needed to make a chassis airtight? Weatherproofing Lexan shields, and making a hinged weatherproof door should get you close enough, assuming the design was within the rules (it isnât).

If you really want to use a fluid density change to make your robot lighterâŚ just remove the fluid.

You need to pull a vacuumâŚ

that would eliminate all of the airâŚ
UnfortunatelyâŚ do beef up your robot to do this would put it overweight âŚ
by a HUGE amountâŚ

As an asideâŚ I wonder if all of our equipment would work in a vacuum?

I know that some interesting things would happen to all of the pneumaticsâŚ

:yikes:

doodling during the kickoff webcast back in JanuaryâŚSteve reminded me that I took a picture of this

Popular myth about the famous accident associates hydrogen with the disaster. All that flame you see is from OTHER things burning. A spark inside a pure hydrogen vessel will not ignite anything. If the gas leaked out, it would escape the area by being pushed aside by in-rushing heavier gas (air) so the igniting spark would have to be very close to the leak to cause problems. Is there a Mythbusters episode about this?

BTW, German engineers knew full well of the flammability dangers of hydrogen but were prevented from using helium by a U.S. embargo that prevented selling the safer gas to Germany.

As long as you keep the hydrogen concentrations above 95% or below 2% (IIRC) hydrogen wonât ignite. Itâs used in electrical generators (think ConEd, city-sized generators) under positive pressure to dissipate heat from the internals because hydrogen is more thermally conductive than air. Crazy, right?

Using it to loose weight on a robot is just silly.

Yep, there is. Iâve seen it. I just checked the schedule; should be on again on 3/6; time listed as 5 ET/PT.

What they figured out with several models was that neither the cover nor the hydrogen was fully responsible. Both of them were culprits. Hydrogen made the cover burn better; the cover makes the hydrogen burn better.

not to mention, that when it burns, it creates water thatâll short out your robot

but wonât the water put the fire out?

/sarcasm