Page 1 | Page 2 | Page 3 | Page 4 | Page 5 | Page 6

Return to Experiments Table of Contents Home Contact Us

If soldering is not possible, try wrapping longer copper strands around the holders (scraped clean) and taping them on.      PUTTING THE MOTOR TOGETHER. Mount the motor parts on the baseboard as shown on page 27. When doing so: Secure the field magnet to the board with a 2-1/4” by 1” metal strip and nails. Keep the clearance between armature ends and field magnet fairly small. Use tape collars to keep the shaft from moving back and forth. Mount the brush holders with screws. Adjust them until the copper strands are vertical. Also, fan out the strands for better contact with the commutator.      CONNECTING THE CIRCUIT. A good motor deserves a switch (and we didn’t build a junky motor, right?). Make the switch arm from a metal strip 4” by 1/2”. Cut a 3/4” disc for the other contact. Use screws for the switch terminals.      In making the connections, follow the diagram on page 32 (as you can see, it’s a series circuit). Don’t forget that the clear insulation must be scraped off the ends of the magnet wire.