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Unread 15-01-2005, 19:16
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dlavery dlavery is offline
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Re: magnets?

Quote:
Originally Posted by MrB
you can get them from www.mcmaster.com part number 5685K32
and you only need it if you plan on building the field elements to simulate the competition field.
Please note that the referenced magnet from McMaster-Carr is NOT the same as the regulation magnet that will be used on the competition fields! This McMaster-Carr magnet is rated for 38 pounds of pull. The 2005 FIRST Robotics Competition Game Team Field Elements Materials List lists the magnet to be used as Part #3G901 from Grainger. The Grainger magnet has a 20-pound pull rating. Make sure that you use the correct magnet (or one with approximately the same pull rating) to ensure similar performance when testing your robot.

Note that for reasons I do not understand, the Grainger magnet does come with a Hazardous Materials Information Sheet, which includes an admonition against shipping the magnets by air. I have never heard of any issues with ceramic magnets before, so this was news to me (and when I brought this to the attention of FIRST, it was also a surprise to them). Can anyone shed any light on this?

-dave
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