Ball machine
What is called a “ball machine” in tennis?
What does a “ball machine” stand for?
What is the term “ball machine” for in tennis?
A ball machine is a mechanical device that automatically throws out balls at different speeds and angles. Its main purpose is to help players to develop their ball hitting technique.
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Tennis is a game played between two people. But long before they meet on a court, each of them will have put in countless hours of practice. However, not all practice is created equal. It is not always possible to have a partner at all times, and discrepancies in skill level and experience may be problematic.
Also, there is a technical component to tennis that must be practiced in isolation, without the variables of another player. This is where the tennis ball machine comes in.
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The French tennis star Rene LaCoste was more than just a master on the court. Away from the tennis circuit, the man known as “The Crocodile” was a shrewd business man and a pioneer in new tennis technology. In the 1920s, he patented a hand-cranked tennis ball launcher in association with sports company Dunlop. The machine was operated by a partner at the other end of the court and allowed him to perform countless stroke repetitions.
LaCoste also produced the first tubular steel tennis racket and of course, he founded the famous sporting brand that still bears his name today.
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By the 1950s, electrically-powered machines had started to appear at tennis clubs but were not widely available to the general public. These machines used a high tension spring to launch a bar fitted with a striking head at the ball. The type of striking head that was fitted determined the trajectory of the ball that was launched. The speed of the machine could also be varied to deliver more or less balls per minute.
In 1968, Robert H. McClure, a sales executive and keen tennis player, built a new tennis ball throwing machine. At the time, McClure was 75 years of age but the machine was a success and sparked the formation of the Prince Manufacturing Company. He eventually retired in 1974 but the company continues to produce tennis equipment to this day.
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The first machine created by McClure and business partner Jerry Sweeton was known as the “Little Prince” and used a vacuum cleaner motor to build air pressure and fire balls from a tube.
The Prince machines were the first tennis ball launchers available on a large-scale commercial basis and sparked a revolution in the tennis machine industry.
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These pneumatic machines remained the technology of choice for many years until counter-rotating wheel systems appeared on the market. Today, battery-operated portable machines are the favoured option for most budding players who do not have access to their own court or electricity supply.
Many tennis training centres are equipped with tennis ball machines which can be hired at a small cost on an hourly or daily basis. So even if you do not have your own court or machine, you can still take advantage of the training benefits provided by such tennis ball launching devices.
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These machines allow you to adjust the speed and regularity at which the balls are delivered so you can tailor your training regimes to suit your needs. There are even machines available that can serve like a professional to help you improve your return. The price of hiring such a machine will depend much on your location and the type of club or sports centre that you frequent.
As for the main benefits of a tennis ball machine, firstly, a tennis ball machines can help you to develop a consistent stroke by delivering the ball exactly the same way each time. This allows you to perfect your technique until it becomes second nature. Once you have learned to strike the ball cleanly at different speeds on a regular basis, other areas of your game will also improve.
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When your stroke feels good, you can set your machine to deliver balls at different speeds, heights, directions and intervals to really boost your full repertoire of shots. You can even set the machine to deliver balls with topspin or backspin.
Hiring a coach to perform this type of repetitive exercise can be very expensive and even the best coach cannot hit the ball with such precision. What’s more, you can practice when you want, for as long as you want and at a tempo that suits you.
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So, whether you want to improve your forehand, backhand, lob or overhead smash, a tennis ball launcher gives you the flexibility you need to put in those extra hours outside of your standard coaching regime.
The features that will be available on your machine will depend on how much you spend. Most entry-level machines still use a compressed air system and can be slightly noisier than their rotating wheel counterparts. They are also slightly less accurate when using different types of balls. However, they put less wear on the ball making them last longer.
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The counter-rotating wheel machines are more accurate and much quieter overall but they are more expensive and will wear out your tennis balls more quickly.
Some machines offer an option to add topspin and backspin to the deliveries. This is a useful feature to have but if you are on a limited budget this might not be available on machines in the lower price range.
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Nearly all machine now offer different oscillations, allowing you to receive balls from different heights and directions. This can get you moving around the court and dealing with different types of shots without having to adjust the machine. Some machines can even feign shots by moving from side to side causing you to move in one direction before the ball is fired in another.
Other adjustable options include the speed and interval at which each ball is delivered. Also companies have started to offer remote control devices so that players can make adjustments to the machine without having to move from their practice position.
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Players who will have to transport their machine to multiple locations should choose a smaller portable option. Some of the larger machines will not fit in a car and can be quite heavy to lift. In this situation, a battery-powered machine is also recommended as it is not always possible to guarantee an electricity supply will be available at every location. Battery machines can last anywhere between two and 12 hours depending on the machine chosen.
For those who have access to their own court or have suitable transportation, a larger high-powered electric machine may be more suitable. Your tennis club may even allow you to store the machine on-site and some even have AC power supplies available near the courts especially for machines use.
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Typically, tennis ball machines can hold between 50 and 300 balls, so those who practice without a partner or coach present may prefer to invest in a machine with a larger capacity to reduce the time needed to reload.
The majority of tennis ball launcher machines on the market operate using counter-rotating wheels. When the machine is turned on an electric fan draws in outside air which is then pushed into the canister. To protect the fan motor from debris the air passes through a slab of foam as well as a screen barrier.
An electric motor powered hopper is used to channel balls into the landing area.
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During this process the wheels squeeze the balls and put them under intense pressure, thus forcing them into a circular tube which leads to a small opening. This soft, rubbery circular area is called a detent. When the ball is lodged in the detent it creates an airtight seal at the end of the tube. Simultaneously, a plastic flap falls over the entrance which causes pressure to mount.
Eventually air pressure pushing on the ball overpowers resistance from the detent. This causes the ball to shoot down the barrel and onto the court. When the pressure has been released the entrance flap is released and another ball is able to enter the tube. The process is repeated until all balls are depleted.
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If you’ve ever used a ball machine you may have noticed that the angle, height, depth and spin of the shot can be adjusted to suit individual player preferences and the type of shot they wish to practice. This is done by altering the rotation speed of the wheels. For example, if the upper wheel is spinning faster than the lower wheel the machine will be able to create topspin. When the lower wheel spins faster than its upper counterpart backspin is created. You may have seen a similar effect created in T-shirt, confetti and fake snow launch machines.