Rob562
Well-Known Member
Hello. The springs at the bottom of the shafts are there to literally absorb the fall of a ride car. Definitely a worse case scenerio. It sounds like it would be a smooth stop, but its still very jarring. There are many other safeties like redundant cabling and e-breaks. The e-breaks are similar to those on real elevators...in the event of a fall, the breaks clamp together on a metal pole running the length of the shaft, slowing and stopping the car from freefall.
Actually, they're not really springs, but more like pistons. A car hitting them at the bottom of the shaft would cause the hydraulic fluid in them to spurt out through a valve. Because the valve can only allow the fluid out at a certain rate, the car is slowed to a stop in a VERY short period of time. (It also leaves quite a mess at the bottom of the shaft with hydraulic fluid all over the place.)
Most hi-rise elevators have similar buffer-zone systems in place. In fact, if you watch the end of the opening credits in the movie "Speed", when the camera reaches the bottom of the elevator shaft you can see the buffers there (and the fact that they are there kinda negates the whole drama over the falling elevator anyway, if you know what they're for....)
In fact, S&S drop towers (like Maliboomer at DCA and Fearfall at IOA) use hydraulic buffers every cycle. They help bring the car to a gentle stop the last few feet as the car comes to a rest at the bottom. I'm sure they'd also act as a good emergency stop if needed.
-Rob