Rock Aqua Jays Power Up with 4.6L V8 300R FourStrokes

As for our large pyramids with bigger loads (40-plus skiers) that we’ve pulled so far, we’ve preferred a slower troll-out speed than normal to start the entire group, knowing the engines can pull us out from the deep with ease. Photo Credit: Jim’s Photos.

The Rock Aqua Jays water ski team has repowered its flagship tow boat with triple Mercury Racing 4.6-Liter V8 300R FourStroke outboards for the 2019 season. Founded in 1961, the Janesville, Wisconsin-based team has won 20 national water-skiing titles since 1975. They were the first amateur team to build three-tier, four-tier and five-tier pyramids. They also hold the Guinness World Record for the largest human pyramid on skis.

When pulling 14-plus bare-footers with the OptiMax 300XS outboards, driver Bob Brockman would bring up the throttles a touch more as they stepped off to compensate for increased drag. With the 300Rs, the boat has ZERO hesitation as we all step off. Photo Credit: Jim’s Photos.

The new 300Rs replace 3.2-Liter V6 Mercury Racing OptiMax 300XS outboards. The new 300R-powered rig made its debut June  15-16 at the 2019 season opener in Warsaw, Indiana, during the City of Lakes Invitational. The engines delivered – powering a first place overall and a sweep of all box scores. The win was important, as Warsaw will be the site of the D1 National Championship,  August 9-11.

Rock Aqua Jays Vice President Kevin Ostermeier is ecstatic with the new 300Rs.

The 300Rs are equipped with 5.44 HD gearcases and 15-pitch Revolution 4 props. Current top speed is 50-52 mph, no matter what’s behind it. Photo Credit: Jim’s Photos.

“As expected, the amount of raw power and torque brought to the water is unbelievable,” said Ostermeier. “When pulling 14-plus bare-footers with the OptiMax 300XS outboards, driver Bob Brockman would bring up the throttles a touch more as they stepped off to compensate for increased drag. With the 300Rs, the boat has ZERO hesitation as we all step off.”

“It didn’t take long for us to realize no throttle adjustment is necessary with these stump pullers. As for our large pyramids with bigger loads (40-plus skiers) that we’ve pulled so far, we’ve preferred a slower troll-out speed than normal to start the entire group, knowing the engines can pull us out from the deep with ease. The 300Rs are always hungry for more.”

 

 

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