only modern water operated funicular
Actuator (on the left), oil tank (on the top) and you
can see part of one of the four accumulators which compress
the nitrogen (bottom right corner).
the gate and doors of the carriages are closed the cumulative
weights are read by a computer in the top station, using
the pull of the cable on the winding drum.
Hidden underneath the front of each carriage is a tank which
can contain 1.6 m3 of water. The correct amount of water
is allowed through the pipe from the lake into the tank
of the top carriage. Then the brake is released and the
heavier car begins to move. The speed is measured by the
processor counting the gear teeth going by in the gearbox.
The processor then tells the electric actuator connected
to the control arm of the variable pump what to do. If it
is going too fast, the hydraulic pump pumps more oil into
the accumulator. Should the carriage being moving too slowly,
less is pumped. The pump controls this at the breakness
speed of 0.7 m/s!
Should there be considerably more passengers going down,
such as during the second half of the day, only a small
amount of water is used and the pumping is automatically
The accumulator accumulates energy by letting the oil compress
nitogen gas inside a bag. It is often used to drive the
hydraulic rams on the 'fills', 'emptys' and brakes etc.
When the gas is fully compressed, it is released to drive
a hydraulically powered water pump that fetches water from
the holding pond beneath the bottom station back up to the
lake. This elegant method ensures a little as possible of
the energy of the system is wasted! The holding pond also
obtains water independently from a stream underneath the