19-09-2012, 20:49
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#StickToTheStratisQuo
AKA: Gregor Browning
no team
Team Role: College Student
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Join Date: Jan 2012
Rookie Year: 2012
Location: Kingston, Ontario, Canada
Posts: 2,447
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Re: Densest Building Materials
Quote:
Originally Posted by Richard
Andy is faster than a speeding bullet, more powerful than a locomotive, able to leap tall buildings at a single bound -- look, up in the sky .... 
Back to FTC ballast -- I recommend U.S. Pennies. You get 100 for only a dollar. They are 0.75 inch in diameter, 0.061 inch thick, and made almost entirely of zinc. A stack of 182 is just over 11 inches long and weighs about one pound.
If you have a bigger budget, try U.S. Nickels. They are slightly larger in diameter (0.835 inch) and made mostly of copper, which is denser than zinc. Their larger diameter and density means you only need a 7 inch stack (91 coins, or $4.55 worth) to make one pound of ballast. This 2.5 times the cost of Penny ballast, at 1.282 times the density. |
It's times like this when I wish we could spotlight entire posts 
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What are nationals? Sounds like a fun American party, can we Canadians come?
“For me, insanity is super sanity. The normal is psychotic. Normal means lack of imagination, lack of creativity.” -Jean Dubuffet
"Insanity is doing the same thing over and over again and expecting different results." -Albert Einstein
FLL 2011-2015 Glen Ames Robotics-Student, Mentor
FRC 2012-2013 Team 907-Scouting Lead, Strategy Lead, Human Player, Driver
FRC 2014-2015 Team 1310-Mechanical, Electrical, Drive Captain
FRC 2011-xxxx Volunteer
How I came to be a FIRSTer
 <Since 2011
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