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by Primate
March 13th, 2012, 4:01 pm
Forum: 2012 Build Events
Topic: MagLev C [Trial]
Replies: 158
Views: 31735

Re: MagLev C [Trial]

JTMess wrote:We tried using two motors for a while and found that it was significantly more efficient to use one motor connected to two batteries wired in parallel.
++ no reason to add the weight of an extra motor.
by Primate
March 13th, 2012, 4:01 pm
Forum: 2012 Build Events
Topic: MagLev C [Trial]
Replies: 158
Views: 31735

Re: MagLev C [Trial]

This may sound dumb, but a 7.4 V hobby aircraft battery works right? We are buying it online and this type of battery is considered commercial, right? I only saw it mentioned once. These batteries are certainly commercial batteries and would be allowed. You may want to check the actual voltage read...
by Primate
February 19th, 2012, 7:12 pm
Forum: 2012 Build Events
Topic: Robot Arm C
Replies: 531
Views: 68036

Re: Robot Arm C

Ok thank you. Somethink that doesnt make sence to me is you get more points closer versus across the play field I think you are over analyzing things. We just wanted to reward grouping things together, not necessarily making you move everything as far as possible. But that is something to consider ...
by Primate
February 18th, 2012, 3:23 pm
Forum: 2012 Lab Events
Topic: Keep the Heat B/Thermodynamics C
Replies: 661
Views: 99734

Re: Keep the Heat B/Thermodynamics C

foreverphysics wrote:GRAPHS?! We have to do GRAPHS?!
/me bangs head on table.
We don't even have a device yet. And of course, Regionals is in a week.
Get temperature probes. Your school's bio/chem lab most likely has a couple. Saves you so much work.
by Primate
February 18th, 2012, 11:04 am
Forum: 2012 Lab Events
Topic: Keep the Heat B/Thermodynamics C
Replies: 661
Views: 99734

Re: Keep the Heat B/Thermodynamics C

So i havent even started with the device and i hav no idea what to do... :/ help? Try looking back a page or two: A week before Regionals and I have NO IDEA what our thermo device is going to be. This is bad, isn't it? Not as bad as you might think. Grab some 3/8" plywood, slap together a 20x20x20c...
by Primate
February 18th, 2012, 8:59 am
Forum: 2012 Lab Events
Topic: Keep the Heat B/Thermodynamics C
Replies: 661
Views: 99734

Re: Keep the Heat B/Thermodynamics C

Is ink on a preprinted label such as a cereal box allowed? Are we allowed to paint our container? Thanks! One of the chalkers should probably answer that, but I'd say that if it was preprinted on the cardboard it would be fine, but painting your device is questionable. Things like this really all d...
by Primate
February 17th, 2012, 9:31 pm
Forum: 2012 Lab Events
Topic: Keep the Heat B/Thermodynamics C
Replies: 661
Views: 99734

Re: Keep the Heat B/Thermodynamics C

A week before Regionals and I have NO IDEA what our thermo device is going to be. This is bad, isn't it? Not as bad as you might think. Grab some 3/8" plywood, slap together a 20x20x20cm box with a lid, and stuff it chock-full of cotton balls. (Hint: glue a layer of cotton balls to your lid.) Add a...
by Primate
February 17th, 2012, 6:30 pm
Forum: 2012 Lab Events
Topic: Keep the Heat B/Thermodynamics C
Replies: 661
Views: 99734

Re: Keep the Heat B/Thermodynamics C

Thank you. I guess I should have prefaced my question with, Given we don't have access to a water bath...how do we deliver water...sorry. We are looking at microwaves, coffeepots and teakettles. I'm sure our Regional competition will have a water bath to run this event, but the middle school doesn'...
by Primate
February 17th, 2012, 6:25 pm
Forum: 2012 Build Events
Topic: Gravity Vehicle C
Replies: 805
Views: 96931

Re: Gravity Vehicle C

Half-Blood-Princess wrote:
fishman100 wrote:But doesn't the rules say "a bent paper clip?"

http://www.bentpaperclip.com/ here's a pic of basically the same thing I am using for the 'bent paper clip'
err, is that not a bent paperclip?
by Primate
February 15th, 2012, 6:13 pm
Forum: 2012 Build Events
Topic: Gravity Vehicle C
Replies: 805
Views: 96931

Re: Gravity Vehicle C

Just wondering so we can write clearer rules.....how did you interpret "on either side of the vehicle between the front and rear axles"? Did you interpret it as either "inside or outside"? Yeah, you can't get much clearer than "on either side," IMO. Made sense to me, but I suppose "along the left o...

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