Friday, November 23, 2007

Motor & Toasty Wires

Tonight I experimented with something akin to a Beakman motor.

I connected the whole thing up, brought my ceramic magnets within close proximity to the coil.

Before I brought the magnet into vecinity I watched with horror as the 22 AWG wire's insulation melted back and I saw the solid wire red-hot...actually orange. Smoke followed this.

At any rate it worked!



How did I make it?

Materials:

  • Magnet wire - it's copper with a transparent coating

  • Magnets - I used 3 ceramic magnets stacked together

  • Battery - 12 v - probably more than I needed, but hey, it's what I had available

  • 2 Paper Clips

  • Sharp knife (used to scrape some of the transparent coating from the magnet wire



Steps:

  • Take ~3 ft of magnet wire and wrap it around something like a D-battery...I used a wooden cylinder-shaped block from the toy-box. Leave about 1.5 inches on each end.

  • Scrape the transparent coating off one half of the tails of the magnet wire.

  • Make a stand out of the paper clips. One for the left side and one for the right side. They should NOT be touching.
  • Place the loop (the armature on the stand

  • Place the magnets near the wire loop

  • Connect power to both paper clip stands - negative on one side, positive on the other

  • If the motor (armature) does not start to rotate then tap it a bit so the scraped sections of the armature can briefly touch the energized paper clip stands

Generator

How does a generator work?


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Sunday, November 18, 2007

Project 8: The Windmill-Pulley 2000

Project 14: The Car Crash Car of Motors Assistant

Tucson Technics Project 14
Start: 7:35 AM, November 18, 2007

Name: The Car Crash Car of Motors Assistant
Half-way through we realized that the power-supply (battery holder) was upside down. So we had to disassemble the unit and reorient the power-supply (battery holder).
End: 8:11 AM

Project 13: The Car Crash Car of Motors

Fun! This was the team's first project that uses a motor.

We skipped a lot of projects as we are getting closer to the upcoming JFLL Tournament in December.

Wednesday, November 14, 2007

JFLL Expo - December 8, 2007

Chris from LegoFlyers has made it possible for Southern Arizona JFLL teams to participate at the 2008 FLL at Sonoran Academy of Tucson.

Set your calendars, December 8, 2007

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