MagLev Vehicle B/C

personasaurus rex · Post by **personasaurus rex** » Mon Jan 17, 2011 6:53 am

butter_side_up wrote:The C division rules specifically mention a test, and a binder for test information, and the fact that the test is 100 points on your score, but no info on what's on the test! Does anyone have a clue as to what might be on there? The rules were really vague...

ii. The following topics may be included: Basic information on physics of magnetism, common uses of magnets, medical uses of magnets, superconductors.

butter side up · Post by **butter side up** » Wed Jan 19, 2011 9:53 am

Thanks! I read the rules way more times than I care to count, and somehow missed that... There was lots of info on magnetic fields on our test.

personasaurus rex · Post by **personasaurus rex** » Thu Jan 20, 2011 3:22 pm

what is everyone using as a base board?

Primate · Post by **Primate** » Thu Jan 20, 2011 3:39 pm

personasaurus rex wrote:what is everyone using as a base board?

balsa/foam. foam you can do blocks, balsa use thin strips.

see if you can find a way to stabilize it, too. balance alone won't do it.

Jocool · Post by **Jocool** » Fri Jan 21, 2011 1:27 pm

It doesn't really even have to be completly balanced. it just needs to not rub the sides. If tilting it one way actually makes it go straight, go with unbalanced.

Primate · Post by **Primate** » Sun Jan 23, 2011 8:57 pm

Jocool wrote:It doesn't really even have to be completly balanced. it just needs to not rub the sides. If tilting it one way actually makes it go straight, go with unbalanced.

Even still, I can never get mine not to touch the sides for the whole run. Any tips?

Also, is it worth carrying two batteries? The stupid 9vs don't power the fans for more than a minute or two.

Jocool · Post by **Jocool** » Wed Jan 26, 2011 9:21 pm

Batteries may only be wired in parallel. And just get it to rub sides as little as possible.

Primate · Post by **Primate** » Thu Jan 27, 2011 10:10 pm

Jocool wrote:Batteries may only be wired in parallel. And just get it to rub sides as little as possible.

Right, which is why carrying two of them would make it last twice as long. The tiny variability in the MagLev tracks always messes things up, though :-/.

quizbowl · Post by **quizbowl** » Sat Feb 05, 2011 7:48 pm

The top three run times were 2.07s, 2.25s and 2.37s at WLI regionals - the test was rather easy and didn't really affect the score. Basically, it was the fastest that won.

Flavorflav · Post by **Flavorflav** » Sun Feb 06, 2011 5:23 am

quizbowl wrote:The top three run times were 2.07s, 2.25s and 2.37s at WLI regionals - the test was rather easy and didn't really affect the score. Basically, it was the fastest that won.

What was the mass of the sled?

Scioly.org

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