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The variable power supply I will use. The motor only runs at 6 volts on this supply. 4.5 V is to low and the next one up is 50 V.
A look at the motor from the top. Here the white string is seen on the axel wrapped up part way.
A washer is attached to the other end of the string to allow the weight to hook on.
This string is the amount of slack which will allow the motor to reach full speed before lifting the weight.
Another look at the amount of slack in the string.
100 grams reaches the top.
200 grams reaches the top.
This is a support I made to allow weights to be hooked to the bottom of other weights. This allowed me to achieve in between masses.
Two meter sticks where used here to guide the string. Before it would wrap along the shaft, moving up or down, getting caught in the bearing or solenoid.
2 kg just barely lifted off the ground.
This is the position the motors were in for the 2 kg lift. The motor stalled at this point.
Project by Ben Bennett view the bibliography on the Project Page