How Fast Will a 50 hp 2-Stroke Mercury Go?
A 50 hp 2-stroke Mercury outboard motor can reach a top speed of **24.0 knots (44.5 km/h)** at wide open throttle (WOT).The actual speed achieved by a 50 hp 2-stroke Mercury outboard can vary significantly depending on how it's operated and the conditions of the vessel it's powering. While 24.0 knots represents its maximum potential speed, it also performs efficiently at lower RPMs suitable for cruising or trolling.
Performance Overview
Here’s a breakdown of typical speeds for a 50 hp 2-stroke Mercury motor at different operational RPMs:| Mode | RPM | Speed (knots) | Speed (km/h) |
|---|---|---|---|
| Trolling | 800 | 2.8 | 5.2 |
| Cruising | 4000 | 16.3 | 30.3 |
| Wide Open Throttle (WOT) | 5500 | 24.0 | 44.5 |
- Trolling Speed: At a low 800 RPM, ideal for fishing or slow maneuvers, the motor maintains a speed of approximately 2.8 knots (5.2 km/h).
- Cruising Speed: For efficient travel over longer distances, a cruising speed of about 16.3 knots (30.3 km/h) can be maintained at 4000 RPM. This speed often offers a good balance between pace and fuel economy.
- Wide Open Throttle (WOT): When the engine is running at its maximum recommended RPM of 5500, it delivers its peak performance, allowing the boat to achieve its top speed of 24.0 knots (44.5 km/h).
Factors Influencing Speed
It's important to note that the speeds listed are based on specific test conditions. The actual speed you experience can be affected by various factors:- Hull Design and Type: The shape, weight, and length of the boat's hull (e.g., planing hull vs. displacement hull) greatly influence how fast it can go. A lighter, more efficient hull will achieve higher speeds.
- Load: The total weight of passengers, gear, and fuel on board directly impacts performance. More weight generally means lower speeds.
- Propeller Selection: The pitch and diameter of the propeller are critical. An incorrectly sized propeller can prevent the engine from reaching its optimal RPMs and speed.
- Water Conditions: Current, chop, and waves can significantly reduce speed compared to calm water.
- Weather Conditions: Wind resistance can also play a role, especially on smaller, lighter boats.
- Maintenance: A well-maintained engine running optimally will always perform better than one that is neglected.
