Water Power
February 19, 2001
The water wheel was used to pull back the rubber band.
Then the energy was use to make the car go.
The water wheel was used to pull back the arm on the rubber band capacitor.  Then the strain energy that saved up was used to power the car.
After that a motor was used as a dynamo.  We could read that more than 5 volts was generated.  The electric energy was saved in a capacitor and the electric energy was used to power the car. Winches were made that were geared with different ratios.  With the worm gear the winch took 2 minutes and 40 seconds to rise. With out the gearing down of 1 to 24 it took less than 7 seconds for a winch to rise.  Actually we had other variables on the water pressure that we could not control.  When water was used else where in the building the water wheel went slower.
Last week's builders and this.
The motor was used as a dynamo.

 
The electric energy was saved  in a capacitor.
More than 5 volts generated.
Extra bricks were built on to keep the chain from bumping.

 
Building the winch.
The winch went on the far end away from the water wheel.

 
Gearing down can lift more weight but it is slow.
The base plate was used to shield the motor from the water.

LEGO Links of Linda Hamilton Hamilton@marshall.edu
eLab at Miller Elementary 2000-2001