Question on Perilous Plunge

Saturday, June 9, 2001 5:32 AM
From the photos, I can see overhanging rails off the sides of the chute facing inside. My question is, are they there to stop the boat from coming off the drop? You would think so seeing how steep it is!

Kinda similar function to upstop wheels, boats would have wheels on the side to run under the overhanging rails.
Saturday, June 9, 2001 6:46 AM
I think there are wheels on the sides of the rails. That would make it from falling off. Here is a pic It shows how there are wheels on the side.

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Saturday, June 9, 2001 11:55 AM
Jeff's avatar Yes, the boat does not just flop around on the drop, it is actually a track. One of the recent Discovery specials said the water coming down is there more for effect than anything else.

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Saturday, June 9, 2001 11:57 AM
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Saturday, June 9, 2001 5:36 PM
Yes that is correct Jeff. Actually most flume rides (and recently the disney rapids rides) with drops dont need the water to make the baot go down the hill since it does roll along a track. On regular flumes namely Intamin log flumes and Arrow Splashdowns (since i have worked both)there are reagular "road" or load wheels that hold the weight of the boat and guide wheels that keep it centered. Niether of these rides really have that steep of drops so the wheels stay in contact with the track at all times. At the bottom a "flap", if you will, covers the track allowing the wheels to go between it and the track to prevent hydroplaning.

As for the water, the drop area is "ridged" with either small metal flaps or bumps that disturb the water flow. if they werent on there the water would appear clear and wouldnt look as dramatic. This is similar to the reason these rides have pipes or long pieces of wood underwater to disrupt the water flow, giving it a rougher or more rolling appearance.

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