2008 FIRST game

[dlavery]

Originally Posted by Richard

So, just for fun I built one, using 3" schedule 40 PVC (non-pressure rated) and standard caps. Overall assembled length is 10" and it weighs ~1.5 lb. Inside I placed a 2.188" diameter steel ball, taken from one of the largest ball bearings that Emerson uses. The ball also weighs ~1.5 lb.

Of course, if the ball were made of tungsten, it would weigh about 3.809 pounds - about 2.5 times as much as the container itself. The dynamic properties of such an object would be .... interesting.

-dave

[FourTwoNineZero]

First team to put all the mini Dean Kamen statues on the mini Segways wins!

[vic burg]

Originally Posted by FourTwoNineZero

First team to put all the mini Dean Kamen statues on the mini Segways wins!

That would be a lot fun!!!!
But how would FIRST make them is the question....

a robot has to build a cube shape with 'breakable' poles (like what you use to put up a tent) but the claws are limited to only 3 'fingers'. The alliances can work together.... but only in autonomous. and of course, the human player can hand the robot the poles but that's it....

i like my idea.....
yeah.....
lol

sorry but, magnet showcase last night until 9 o'clock and pre-season jitters are NOT good when combined together

[Jevin H]

I like the football idea but 6 aside robot and human player(with alot of padding) football

[Richard Wallace]

Originally Posted by dlavery

Of course, if the ball were made of tungsten, it would weigh about 3.809 pounds - about 2.5 times as much as the container itself. The dynamic properties of such an object would be .... interesting.

Interesting indeed. Such an object would stand nearly upright with the ball in the rounded PVC endcap. It might even walk a little ways, end-over-end, when pushed. Like a large "Mexican Jumping Bean," to recall a popular toy from decades ago.

However, FIRST is unlikely to build such objects in quantity. Ingots of tungsten are going for about $13/lb these days. Worked into balls, the cost per pound would go a bit higher.

Hmm. Highly unstable, heavy objects being manipulated by FRC robots? Autonomously?

[Taylor]

Originally Posted by Richard

Hmm. Highly unstable, heavy objects being manipulated by FRC robots? Autonomously?

We've been doing that with Freshmen for years.

[Daniel_LaFleur]

Originally Posted by dlavery

Of course, if the ball were made of tungsten, it would weigh about 3.809 pounds - about 2.5 times as much as the container itself. The dynamic properties of such an object would be .... interesting.

-dave

... and so it begins.

[Doug G]

Originally Posted by dlavery

Of course, if the ball were made of tungsten, it would weigh about 3.809 pounds - about 2.5 times as much as the container itself. The dynamic properties of such an object would be .... interesting.

-dave

2.5 times, hmm??

[Richard Wallace]

Originally Posted by dlavery

Of course, if the ball were made of tungsten, it would weigh about 3.809 pounds - about 2.5 times as much as the container itself. The dynamic properties of such an object would be .... interesting.

Originally Posted by Doug G

2.5 times, hmm??

A three inch diameter steel ball (if I could find one) would weigh just about 4 lb., and would fit nicely inside the PVC. So the interesting dynamic properties that Dave mentions could be realized without using tungsten. Just a cost-saving suggestion.

[AndyB]

Quick someone start looking at the records for a purchase of 10000 3" steel balls!

Or just look for the FedEx truck with the rear bumper dragging on the ground...

[Richard Wallace]

Originally Posted by AndyB

Quick someone start looking at the records for a purchase of 10000 3" steel balls!

Or just look for the FedEx truck with the rear bumper dragging on the ground...

A slight problem just occurred to me -- if FIRST distributes 3" diameter steel balls, then the TechnoKats will be tempted to modify their air-cannon to fire the danged things! No one will be safe at the IRI!

[BanksKid]

Originally Posted by Richard

A slight problem just occurred to me -- if FIRST distributes 3" diameter steel balls, then the TechnoKats will be tempted to modify their air-cannon to fire the danged things! No one will be safe at the IRI!

they wouldn't do that.......it wouldnt be safe ....................but i do like the sound of "i graciously destroyed your robot in a professional manner"

[Schnabel]

Originally Posted by Richard

A slight problem just occurred to me -- if FIRST distributes 3" diameter steel balls, then the TechnoKats will be tempted to modify their air-cannon to fire the danged things! No one will be safe at the IRI!

Air cannon, What air cannon? O you mean that thing that destroyed a ceiling tile at IRI last year?

Originally Posted by BanksKid

they wouldn't do that.......it wouldnt be safe ....................but i do like the sound of "i graciously destroyed your robot in a professional manner"

Well the cannon does speak for itself, but it is more like BOOOOOOOOOOOOOOOOOOOM! I GRACIOUSLY DESTROYED YOUR BOT! DON'T GET MUCH BETTER THAN THIS! THAT'S WHY THEY PAY ME THE BIG BUCKS! [/sarcasim]

Besides our next task is punkin' chuckin'! [/sarcasim for real]