Infinity Drive™ Turbo Motor: Superior Oscillating Sprinkler Technology

In 1946, Melnor® introduced a fundamental change to lawn watering: the oscillating sprinkler. At the time, most sprinklers distributed water in a circular pattern, concentrating coverage in the center and leaving rectangular lawns unevenly watered.

Melnor’s oscillating design solved the problem of circular watering in rectangular lawns by creating a spray bar that moves back and forth, delivering even coverage across the full width of a yard, matching the way residential landscapes were typically shaped in the 1940s and 1950s.

That original oscillating format quickly became the industry standard. Other manufacturers adopted similar designs, and since then, most have focused on replicating the external form rather than advancing the internal mechanics that control performance. Melnor, however, has continued to develop product improvements to address the real challenges homeowners face: inconsistent water pressure, debris in water supplies, and premature drive failure.

Over time, manufacturers began using larger plastic tubes to house the spray bar. While these tube-style designs became common, Melnor identified a critical limitation: the tube itself did not improve performance. True advancement required re-engineering the motor that drives the oscillation.

That realization led to the development of the InfinityDrive™ Turbo Motor—a patented drive system created by Melnor to deliver consistent, reliable oscillation regardless of pressure fluctuations or water quality. While many brands later adopted the appearance of large tube-style oscillators, only Melnor redesigned the motor inside.

Tube-Style Oscillators: Form Is Not Function

Modern oscillating sprinklers commonly use a tube-style design. This design features a long plastic spray tube with multiple jets that move back and forth to distribute water. Today, this form factor is nearly universal. However, the presence of a large tube alone does not define performance.

Many manufacturers market “turbo-style” oscillators based on the tube itself. In these designs, the tube simply fills with water, adding weight to stabilize the sprinkler on the lawn. Internally, the drive mechanisms remain largely unchanged and continue to rely on water pressure to function. As a result, these systems are still vulnerable to pressure drops, sediment intrusion, and gear failure.

Melnor’s approach is fundamentally different.

Rather than focusing on the size of the tube, Melnor engineered the InfinityDrive Turbo Motor, which is a new drive system designed to address the primary causes of oscillating sprinkler failure: fluctuating water pressure and debris in the water supply.

The result is not just a tube-style oscillator, but a true turbo-drive oscillator, where performance improvements come from the motor inside, not the plastic surrounding it.

Consistent Performance Under Variable Water Pressure

In traditional oscillating sprinklers, when water pressure drops—as it often does in residential systems—the water’s spray height, distribution, and movement speed are all affected. In some cases, the sprinkler may stop oscillating altogether.

Melnor designed the InfinityDrive Turbo Motor to offer a key advantage: consistent operation across a wide range of water pressures, ensuring even spray regardless of household fluctuations.

A water wheel fixed to a drive gear sits at the core of the system. This pairs with a diverter plate that directs water through multiple channels. It’s a design that enables controlled changes in spray direction while maintaining steady movement.

“Our technology provides transmission gearing inside the drive that steps down seven times to deliver high torque,” says Jonathan Strickland, Quality Assurance Manager at Melnor. “The water wheel transfers energy to the gears and regulates water distribution, so whether you have high or low water pressure, it’s designed to provide the same speed and output of water.”

As a result, homeowners don’t have to worry about pressure fluctuations affecting coverage. Even under low pressure, the gears continue to turn, and the oscillator maintains consistent back-and-forth motion.

Designed to Withstand Debris and Sediment

Debris and sediment are another common cause of sprinkler failure—particularly for homeowners who rely on private well water.

According to the U.S. Geological Survey (USGS), more than 43 million people in the United States—approximately 15% of the population—use private wells as their primary water source. Sediment, sand, and mineral particles are common in these systems and can easily clog traditional oscillator drives.

In many tube-style oscillators, debris strikes the water wheel or enters the drive mechanism, jamming gears and halting operation. The Infinity Drive Turbo Motor was engineered specifically to prevent this.

Its patented design uses a separate chamber to keep gear drives away from water, preventing debris from entering the motor. This results in reliable operation and a longer product life than systems prone to clogging.

“We know sediment can jam up drives, and with the large number of people relying on well water, that’s a real issue,” says Strickland. “So we developed a patented design that keeps debris away from the motor so it can maintain consistent back-and-forth movement. No other manufacturer has this design.”

Common Sources of Debris in Well Water

• Pumps that are positioned too close to the bottom of the well, where sediment accumulates
• Damaged components such as corroded well screens, cracked casings, or deteriorating seals
• Wells drilled through sandstone, limestone, or loose bedrock
• Dissolved minerals (calcium, magnesium, iron, manganese) that form sediment over time

Purpose-Built Quality, Backed by Experience

For 80 years, Melnor has focused solely on providing homeowners with watering solutions. That focus allows the company to continually refine products to solve real-world watering challenges rather than simply following category trends.

Melnor combines practical engineering with patented technology to deliver watering tools that perform consistently, last longer, and earn homeowner trust. Melnor builds all products to last and backs them with a lifetime warranty, reflecting the company’s commitment to long-term value.

The Infinity Drive Turbo Motor is used in multiple Melnor products—including oscillating sprinklers, rotaries, and select hydrologic solutions—to deliver reliable, even water distribution regardless of pressure or water quality, making it an ideal choice for demanding consumers.

To learn more about the Infinity Drive Turbo Motor, visit melnor.com/tech/infinity-drive-motor.

About Melnor Inc.