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Cable Car Museum Investigation
Investigation Day Five
July 1, 2007
 The museum showed how the cable cars run and how they came to be. Originally, there were horses and carriages. It was hard for the horses to make it up the hills and they could only last for a few hours because they would tire easily. Then in 1888 is the year that they started to use steam engines to run the machines. There were boilers in the back of the room that provided the needed steam to run the cars.
 The length for the cables are: for Powell it is 9,050 ft, for Mason it is 10,500 ft, for Hyde it is 15,700, and for California it is 21,500 ft. There are three wheels that work each street called “sheaves”. The first sheave is called the idler sheave, the second sheave is called the driving sheave, and the last sheave is called the tension sheave. The driving sheave is powered by the motor. The idler sheave gives more surface contact. The tension sheave keeps the cables tight while they are running. |
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