Category Archives: Lab Finish

Expanded MAX5 Propeller Offerings

Mercury Racing Propeller Manager Scott Reichow and Propeller Specialist and  Project Manager Nick Petersen  review  our expanded MAX5 propeller offerings.

New 15.25-inch-diameter MAX5 models offer 3-4 percent reduction in slip compared to the 15.00-inch models on select outboard and sterndrive applications that benefit from elevated transom heights.

The Mercury Racing MAX5 propeller, developed and handcrafted by Mercury Racing Propeller artisans, is designed for single- and multiple-engine applications, including the 400R outboard and the 600 SCi sterndrive. The Lab Finished MAX5 provides a measurable reduction in propeller slip (up to 12 percent). In fact, the MAX5 prop is so efficient builders are finding they can run it higher to take full advantage of engines fitted with the race-proven Sport Master gearcase.

Bigger is Better

New 15.25-inch-diameter MAX5 models offer 3-4 percent reduction in slip compared to the 15.00-inch models on select outboard and sterndrive applications that benefit from elevated transom heights. Half-inch pitch offerings enable engines to be dialed-in to their maximum rpm operating range for enhanced throttle response, optimized cruise fuel efficiency and optimal top speed.

MAX5 ST

The shortened exhaust barrel enhances the performance of single-engine bass boats and twin-engine catamarans by keeping the stern planted for a confidence-inspired ride, while the large 15.25-inch-diameter prop stays hooked up at extreme engine heights.

The new Mercury Racing MAX5 ST propeller is designed for the 4.6L V8 300R FourStroke outboard with Sport Master gearcase. The shortened exhaust barrel enhances the performance of single-engine bass boats and twin-engine catamarans by keeping the stern planted for a confidence-inspired ride, while the large 15.25-inch-diameter prop stays hooked up at extreme engine heights.

Initial test results are promising. A 300R FourStroke spinning a 31-inch pitch MAX5 ST prop powered a tournament-loaded Bullet 21 XRS bass boat to 97.5 mph with a mere 7 percent slip!

A 300R FourStroke spinning a 31-inch pitch MAX5 ST powered this tournament-loaded Bullet 21 XRS bass boat to 97.5 mph with a mere 7 percent slip!

All MAX5 propellers feature the Mercury-patented Performance Vent System® (PVS), which enables the user to fine-tune the amount of venting needed for quick planing.

 

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Dialed In for Maximum Performance

Mercury Racing propellers are designed to maximize boat performance and handling in any application, from pleasure boating and fishing to poker runs and competition racing. Our artisans handcraft each propeller to precision-tuned works of art, customized for specific boat types and performance goals. Each individual propeller is then zero balanced and measured to ensure consistent performance every single time.

Performance Evolution

Only a small percentage of our propeller line today is designed specifically for racing. In fact, our most popular props, based off the Bravo I are used primarily for recreational boating.

Hole shot, on-plane efficiency and fuel economy under load are top of mind of the modern day boater.

Customer expectations have evolved through time and we have responded. Propeller performance is no longer about top speed. Today, consumers are also looking for the propeller to deliver hole shot, on-plane efficiency and fuel economy under load.

This MTI 340X catamaran is dialed-in with a set of 300R FourStroke outboards spinning handcrafted Racing CNC Outboard Propellers.

We have made additional tweaks to Mercury’s base Bravo casting to provide a new performance level for a variety of 2-stroke and 4-stroke outboard applications.  We also produce a variety of other outboard propellers  including the MAX5, Rev 4 XP, Enertia ECO XP, Pro Max and the 5-blade CNC Cleaver.

Our sterndrive  prop selection includes the Lab Finished Bravo I, Bravo I FSMAX5MaximusBravo Three XR, and the five and six blade CNC Cleavers.

 

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Performance Revolution!

Lab Finished Revolution 4 Propeller.
Mercury Racing Lab Finished Revolution 4 Propeller.

I’m excited to share some awesome news regarding our Lab Finished Revolution 4 props. New 20-inch, 22-inch and 24-inch pitch offerings expand the range from 19-25-inch in one inch increments. The new models are producing exceptional results with the Mercury Verado 350 and our Verado 400R outboards. Multi- engine (trip, quad or quint) stepped bottom performance center consoles users are reporting improved planing performance, excellent mid-range punch and awesome top-end speeds.

Rev 4s were used to carry the load for 400R MTI V-42 demo rides in Miami.
Rev 4s were used to carry the load for 400R MTI V-42 demo rides in Miami. Photo courtesy of Poker Runs America magazine.

“Don’t tell anyone else about the new Lab Finished Rev 4s. I would prefer to maintain the distinct advantage they provide for our hulls,” quipped Randy Scism – president/owner of Marine Technology, Inc.  Randy personally helped me dial-in the new props.

MercuryRacing_3-10-315-(43-of-55)
Lab Finished, a registered trademark of Mercury Marine; is a process often imitated but never duplicated.

“We experienced an improvement in both acceleration and top-end speed when running the Lab Finished Rev 4s with Verado 350s and 400Rs on our V-42 center consoles. Dollar for dollar – your Rev 4s provide the best value on the market,” Randy said.

Mercury Racing® Lab Finished®  Our propeller technicians are second to none. They hand blend props for peak performance in both outboard and sterndrive applications. In fact – we were the first to provide the custom prop work and deem the process “Lab Finished”; a registered trademark of Mercury Marine.

Four Step Process:

• Blade surfaces are thinned in specific areas

• Modify leading edge

• Tune trailing cup heights

• Zero Balanced for maximum efficiency

Like many of our stainless steel through hub exhaust props, the Lab Finished Revolution 4s feature the Mercury patented Performance Vent System (PVS). PVS enables the user to fine tune the amount of venting needed for quick planing. The standard length exhaust tube, in addition to reducing the time-to-plane, also provides stern lift for maximum hull performance and an improved ride in a variety of conditions. I must admit I was  a bit nervous releasing this information about the new Rev 4s after hearing Randy’s plead. At least I didn’t reveal his preferred pitch. 🙂

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FS Miller

Steve's boat is similar to this Lund Pro-V 2075.
Steve’s boat is similar to this Lund Pro-V 2075.
Steve's Verado 300 Pro Fourstroke.
Steve’s Verado 300 Pro Fourstroke.

My good friend Steve Miller recently bought a 2014 Lund Pro-V 2075. Steve is the Senior Category Manager for Mercury Marine. He was heavily involved with the Verado from day one and also on the ground floor of the 150 Fourstroke launch as well as the launch of its 75-115 siblings. He knows the products – inside and out. Its only natural his 2075 Lund features Verado 300 Pro Fourstroke power. Steve uses the boat for both fishing and family time on the water.  Read more

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