Why Do Jet ski Shoot Water up in the Air?

Why Do Jet ski Shoot Water in Air

We have seen jet ski shooting water in the air, but why does this jet ski spray up water? This is a common query among jet ski beginners.

Well, in this article, we will explain the reasons and brands that are using this tech.

Reasons for Water Ejection:

  • Visibility: Jet skis shoot a stream of water high into the air, which increases visibility by creating a ‘rooster tail’ effect. This is particularly catches the eye, something which is advantageous during daylight hours.
  • Brand Identity: Similar to unique features of vehicles for brand recognition, the water spout on certain jet ski models serves as a trademark characteristic.
  • Cooling Function: Jet Skies have a compact and powerful thrust motor, it need to cool down. Passing some water from this motor helps in cooling down the overheated motor.

Adjustable Features:

  • Water spout out may be good for engine or brand characteristics but may be disliked by the owner or rider, it can be modified or removed. There are kits that allow riders to control the spray, depending on personal preference.

Water Ejection and Its Purposes

Cooling Function

Jet ski are design with cooling system that utilizes water from the surroundings. As the engine runs, it generates heat which must be dissipated to avoid overheating. To do this, water goes through the engine to absorb heat, then expel warm water.

Safety and Visibility

Aside from cooling the engine, the shooting water also serves a safety purpose. This visibility spout comes to the rescue when jet ski visibility blends with waves. This visual alert helps to prevent collisions and that is why we see such water shoots up on various jet ski models.

Trademark Characteristics

Shooting water in air certainly catches anyone’s attention, but only Yamaha brand is utilising this tech, certainly helping its brand recognition. This makes Yamaha wave-runner standout among other brands.

How Does the Jet Ski Water Spray System Work?

Yamaha Visibility Spout

To understand how this system works, it’s important to recognize the role of the jet ski’s impeller. The impeller functions by pushing water through a nozzle at the stern of the jet ski, which propels it forward. As a byproduct of this propulsion, some of this water is redirected upwards through a separate tube making a rooster effect, also known as visibility spout.

Here’s a step-by-step breakdown of the process:

  1. Water Intake: Water enters the jet ski through an intake grate at the bottom.
  2. Impeller Action: This water gets forced by the impeller, which acts like a pump.
  3. Thrust Generation: The majority of water exits through the rear, creating forward thrust.
  4. Water Redirection: A portion of this water is then channelled up through a vertical tube or pipe.

Frequently Asked Questions

What is the purpose of the water spout on jet skis?

The water spout on jet skis, often called a “rooster tail,” is primarily a safety feature. It makes the jet ski more visible to other watercraft, reducing the risk of collisions.

What should I do if my jet ski’s water spout isn’t functioning properly?

It’s important to inspect the jet pump and check for blockages or damage. Consulting the manufacturer’s guidelines or seeking help from a professional are the best next options.

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2 Comments

  1. Is there a potential for this visibility spout technology to be adapted for other watercrafts to increase safety on the water?”,
    “refusal

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