Mercury Marine’s BigFoot FourStroke outboard has earned a reputation as being the ideal pontoon boat gearcase, but it’s also a perfect choice for additional applications, especially aluminum fishing boats and saltwater flats boats that have the ability to handle the 40- to 60-hp BigFoot lineup.
The gearcase was designed specifically to deliver the power, thrust and control that wider, heavier boats demand – regardless of whether that boat is a pontoon, tritoon, deep-V aluminum or fiberglass boat. The BigFoot gearcase is the same size as a standard 115 hp FourStroke Mercury outboard. Thus, the engine is capable of turning a larger-diameter propeller and providing additional power.
Anglers operating aluminum fishing boats who have chosen a BigFoot gearcase are experiencing better hole shot with minimal loss in top-end speed. The longer, bigger components allow the BigFoot to swing a propeller 20 percent larger, which provides better control, especially at low speeds.
The taller gearcase improves performance and efficiency by placing the propeller deeper in the water below turbulence, allowing it to operate in cleaner, less aerated water. The low 2.33:1 gear ratio delivers thrust and maneuverability that big loads demand, and its oversized anti-ventilation plate prevents air from being drawn into the prop – increasing efficiency. All of these features equate to a satisfying boating experience.
Anglers fishing in shallow waters need their outboard to get on plane fast and lift higher. Typically, boats equipped with BigFoot outboards run higher in the water making for a dryer, more enjoyable ride. As an added bonus, fuel economy also improves significantly because less boat is dragging in the water.
Recently, Mercury dealerships performed head-to-head testing between the 60 hp BigFoot FourStroke outboard and a competitive 70 hp four-stroke. The 60 hp BigFoot outperformed the 70 hp in acceleration and fuel economy without any disadvantage to mid-range speed.
The BigFoot Difference (blue shaded areas represent prop and gearcase advantages)
BigFoot key attributes
Large Displacement 4-cylinder engine
A single overhead cam and long intake stroke design increase torque output for better acceleration
Electronic fuel injection
Provides turn-key reliable starting, instant throttle response, spectacular fuel economy and less fuel system maintenance
Positions the propeller deeper in the water below turbulence, allowing it to operate in cleaner, less aerated water
Designed with 20 percent more surface area than competitive props for greater performance
Low gear ratio
The 2.33:1 ratio improves overall thrust and efficiency
Anti-ventilation plate: Oversized design prevents surface air from being drawn into the prop for increased efficiency
18 Amp alternator: Maintains battery charge to run electronics, lights and other accessories
SmartCraft: Delivers information regarding key engine functions from fuel usage, rpm and engine guardian to slow trolling rpm control and hull information
Precision shift system: Delivers smooth, quiet and effortless shifting
Power trim/tilt: Allows user to trim the unit for maximum performance, handling and shallow water operation
Freshwater flushing port: Rear-mounted port flushes saltwater and debris out of the engine, extending the life of the outboard
Easy maintenance: Convenient oil drain and fill location, along with an automotive-style spin-on filter
Tiller or remote steering: Standard remote-steer models can be fitted with a Big Tiller Kit option, making it a perfect fit for all types of boating applications