DIRECTIONS cont.

6. Solder all of the connections in the schematic (above) except for the two on each motor. For those, bend the ends of the wires into hooks and insert them through the motor tabs. Insert batteries and test-drive the launch wheels. The motor on the right must turn clockwise; the left anticlockwise. If necessary, switch the positive and negative wires to reverse the wheels’ direction. Once confirmed, crimp and solder the motor connections. 7. Hold the mounting blocks together and centre them on the base according to the diagram. Make sure the bolt holes are on opposite edges. Spread some wood glue on the bottom

of one block and the top of the other, then squeeze the blocks between the base and the launch platform to glue them in place.

8. Use the hot-glue gun to fasten the battery holder to the launch platform. Insert a carriage bolt and washer through the holes in the mounting blocks. Tighten with a wing nut to connect the two halves of the launcher at a 45-degree angle. 9. Slip the rubber wheels over the top of the motor shafts. You should be able to fit five sheets of paper between the wheels. Tighten the set screw on the motor shaft.

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