Wednesday, April 29, 2009

Dunk tank

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The dunking mechanism on the typical dunk tank is triggered by a ball hitting a small target.
A dunk tank, also known as a dunking booth or dunking machine, is an attraction mainly used in funfairs, fundraisers, and personal parties. Basically, a dunk tank consists of a large tank of water, over which a seat is suspended. By striking a target, the seat will tip or fall into the tank of water, thus "dunking" whoever is sitting on the seat.
Contents
1 Types of dunk tanks
1.1 The Easy Dunker
1.2 Other types
2 Events with dunk tanks
2.1 Fundraising
2.2 Parties, carnivals and picnics
2.3 Nightclubs/pubs
3 Clothing
4 Safety
4.1 Young children
5 Alternatives
6 See also
7 References
//
Types of dunk tanks
There are many types and brands of dunk tanks commercially available. Most consist of a plastic tank and seat, with a metal support frame. Others are made entirely of metal, and some are made of wood. Usually, there is fence-like protector around the seat, which is used to protect the person sitting on the seat from being injured by stray balls missing the target. The seat is latched in an upright position. When the target is struck, the seat becomes un-latched, thus dropping the victim into the tank.
The Easy Dunker
The Easy Dunker, manufactured by Twister Display, is likely the most common rentable dunk tank on the market. It consists of a plastic tank, approximately four feet deep, and a plastic seat, around which is a plastic chassis which can be towed by a vehicle with a trailer hitch. Often there is a clear plastic window on the front of the tank so that the victim can be seen underwater. To the side of the tank is the target, a circle approximately one foot in diameter. Behind the target is a plastic tarp with a metal frame to stop balls which miss the target itself. The person to be dunked climbs onto the seat via a ladder on the side of the dunk tank, and is protected by a chain-link fence enclosure while waiting to be dunked. When the target is hit, the seat becomes disengaged from the chassis, tipping the victim into the tank. The seat-target mechanism, usually a vise grip that holds the seat in place by clamping down on a metal ring at the rear underside of the seat, and which is welded to the chassis so that the target shaft trips it when hit, must be reset afterwards, and the victim climbs back onto the seat using a molded step at the bottom rear of the tank and the chain-link enclosure and chassis for leverage.
Twister Display has since released an updated version of their dunk tank, called Easy Dunker 2. This newer model is similar in all aspects to the original, though there have been a few modifications. Whereas the original chassis had a platform flush to the seat on both sides, for the Easy Dunker 2 on one side the platform is lower, nearly flush to the top of the tank, forming a step that makes it easier to get onto the seat.
Other types
There is a smaller and shallower dunk tank, similar to the Easy Dunker. This tank works is a similar way, but is often used in events where younger children might wish to participate in getting dunked. Additionally, there are several individual dunk tank designs. Among the dozens of variations are dunk tanks in which the victim is completely enclosed by a fenced enclosure; dunk tanks in which two or more people can be dunked at the same time; and dunk tanks where the target mechanism is tripped by unusual ways (eg, making a golf hole, shooting a free throw, etc.) There are also dunk tanks where the seat runs sideways across the tank and is supported at one side by the target shaft, for some of these particular dunk tanks the seat splits apart in the middle, as seen in the movie Roustabout and the CHiPs episode entitled Boulder Wrap Party. There are also dunk tanks where instead of a traditional seat, the victim sits on a swing, as seen on Battle of the Network Stars which aired in the late 70's and early 80's.
Events with dunk tanks
Fundraising
Several groups use dunk tanks as fund raisers. For example, at a town or county fair a group may rent a dunk tank, and have volunteers willing to be dunked. The public could then pay a small fee for the chance to dunk them. Student groups, Scouting programs, church youth groups, and other non-for-profit organizations frequently do this. Often, a dunk tank fund raiser will yield excellent profit, as the only expense is the cost of renting the tank. However, it can be a risky investment, if attendance at the event is not as high as expected. Also, inclement weather (too cold to be in the water, or thunderstorms) can cause a dunk tank event to be canceled.
Parties, carnivals and picnics
Dunk tanks are also frequently rented for events where people are not charged for the chance to dunk a volunteer. This is common at...(and so on)

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