A boat propeller is a crucial component in the propulsion system of a boat, responsible for converting the engine's rotational power into forward or backward thrust. They come in various sizes and styles, each designed to match specific boat types and performance needs. The design of the propeller affects the boat's speed, handling, and fuel efficiency, making its selection important for optimal boat performance. In our online shop, we stock a variety of options to match your boat's specifications. Ensure you choose the right hub and bearing for a smooth fit and operation, whether you need a right-hand (RH) prop or another configuration. Our knowledgeable customer support team is ready to assist you in finding the perfect propeller to enhance your boat's performance and reliability.
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1-2 weeks delivery time The FP-3B 14x12 RH bladeset has a 14-inch diameter, 12-inch pitch, 3 blades, 80 mm hub length, right-hand rotation, a taper of 1:10, a 30 mm shaft diameter, and a developed area ratio of 69, made from Nickel Aluminum Bronze for product 735007.
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$ 2,023.10
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1-2 weeks delivery time The FP-3B 14x13 RH bladeset features a 14-inch diameter, 13-inch pitch, 3 blades, right-hand rotation, and a taper of 1:10, made from Nickel Aluminum Bronze, suitable for product 735007.
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$ 2,023.10
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1-2 weeks delivery time The Flexofold FP-3B 15x9 RH bladeset is a high-quality 3-blade marine propeller made from durable Nickel Aluminum Bronze, offering smooth operation and long service life with right-hand rotation and a precision taper connection.
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$ 2,202.66
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1-2 weeks delivery time The Flexofold FP-3B 15x10 RH bladeset features a robust 3-blade design in marine-grade bronze, providing consistent thrust and efficiency, with optimized blade geometry and right-hand rotation.
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$ 2,202.66
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1-2 weeks delivery time The Flexofold FP-3B 15x11 RH bladeset delivers balanced performance and durability with a 3-blade marine-grade bronze construction, ensuring smooth sailing and dependable right-hand propulsion.
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$ 2,202.66
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1-2 weeks delivery time The Flexofold FP-3B 15x12 RH bladeset offers efficient right-hand propulsion with a 3-blade design made from high-strength bronze alloy and optimized pitch for smooth acceleration.
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$ 2,202.66
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1-2 weeks delivery time The Flexofold FP-3B 15x13 RH bladeset is a right-hand rotating 3-blade propeller made from Nickel Aluminum Bronze, suitable for specific installations and durable marine use.
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$ 2,202.66
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1-2 weeks delivery time The Flexofold FP-3B 16x10 RH bladeset is a 3-blade propeller for larger shafts, made from Nickel Aluminum Bronze, with right-hand rotation and a tapered shaft connection.
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$ 2,637.61
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1-2 weeks delivery time The Flexofold FP-3B 16x11 RH bladeset is a 3-blade, right-hand rotating propeller in Nickel Aluminum Bronze, supplied as a single piece for reliable marine use.
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$ 2,637.61
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1-2 weeks delivery time The Flexofold FP-3B 16x12 RH bladeset is a right-hand 3-blade propeller in Nickel Aluminum Bronze designed for tapered shaft installations, supplied as one piece.
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$ 2,637.61
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1-2 weeks delivery time The Flexofold FP-3B 16x13 RH bladeset features a durable 3-blade right-hand design, made from Nickel Aluminum Bronze, suitable for marine and tapered shaft applications.
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$ 2,637.61
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1-2 weeks delivery time The Flexofold FP-3B 16x14 RH bladeset is a strong 3-blade right-hand propeller made from Nickel Aluminum Bronze, designed for dependable marine propulsion.
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$ 2,637.61
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1-2 weeks delivery time The Flexofold FP-3B 17x11 RH bladeset combines a larger diameter with a 3-blade right-hand design in Nickel Aluminum Bronze, offering reliable marine propulsion.
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$ 2,897.64
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1-2 weeks delivery time The Flexofold FP-3B 17x12 RH bladeset is a 3-blade right-hand propeller in Nickel Aluminum Bronze, supplied as a single piece for marine applications.
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$ 2,897.64
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1-2 weeks delivery time The Flexofold FP-3B 17x13 RH bladeset is a right-hand rotating 3-blade propeller made from Nickel Aluminum Bronze, offering consistent performance in marine environments.
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$ 2,897.64
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1-2 weeks delivery time The Flexofold FP-3B 17x14 RH bladeset is a 3-blade right-hand propeller in Nickel Aluminum Bronze, designed for tapered shaft marine propulsion.
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$ 2,897.64
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1-2 weeks delivery time The Flexofold FP-3B 17x15 RH bladeset is a durable 3-blade right-hand propeller in Nickel Aluminum Bronze, suitable for tapered shaft marine installations.
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$ 2,897.64
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1-2 weeks delivery time The Flexofold FP-3B 18x11 RH bladeset is a right-hand rotating 3-blade propeller in Nickel Aluminum Bronze, supplied as a complete piece for reliable marine performance.
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$ 3,152.83
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1-2 weeks delivery time The Flexofold FP-3B 18x12 RH bladeset is a 3-blade right-hand propeller made from Nickel Aluminum Bronze, designed for tapered shaft installations and reliable marine performance.
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$ 3,152.83
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1-2 weeks delivery time The Flexofold FP-3B 18x13 RH bladeset features a strong 3-blade right-hand design in Nickel Aluminum Bronze, suitable for efficient marine propulsion.
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$ 3,152.83
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What are the differences between inboard and outboard boat propellers?
Inboard and outboard boat propellers differ primarily in their placement and integration with the boat's engine. Inboard propellers are part of a system where the engine is mounted inside the boat, driving the propeller through a shaft that extends to the hull's exterior. This setup is commonly used in larger boats and offers better protection for the propeller. Outboard propellers, on the other hand, are attached to an outboard motor, which is mounted externally on the stern of the boat. This arrangement provides easier access for maintenance and replacement, and is typical for smaller boats and sailing vessels. Additionally, inboard propellers often require a more complex and protected installation, while outboard setups allow for greater flexibility and ease of handling.
When searching for boat props, it's important to find the right propeller for your boat to ensure optimal performance. We offer a wide range of boat propellers for sale, including performance propellers, sterndrive, and general propeller-GP models. Our inventory includes PowerTech propellers and custom inboard propellers, perfect for ski and wake boats. Our expert team can help you with any custom inboard propeller needs and provide replacement boat propellers. We strive to offer one of the largest selections of boat props at the lowest prices. Whether you're dealing with a bent prop shaft or need a duo blade powertech prop, we aim to provide consistent quality and fuel economy.
How do the materials used in inboard boat props and shaft affect their performance and durability?
The materials used in boat propellers significantly influence their performance and durability. Bronze propellers, commonly used in many inboard applications, offer excellent corrosion resistance and durability, making them suitable for long-term use in saltwater environments. Stainless steel propellers, on the other hand, provide a stronger alternative with greater impact resistance and less flex under load, enhancing performance by maintaining more precise blade shape at higher speeds.
Both materials ensure that the propellers can withstand the harsh marine environment while supporting the specific performance requirements of different types of boats, from sailing vessels to motor-driven crafts.
What is the impact of inboard propellers blade count on a boat’s maneuverability and thrust?
The number of blades on a boat propeller plays a crucial role in determining the boat's maneuverability and thrust. Generally, a propeller with more blades, such as a four or five-blade propeller, provides smoother operation and better traction in the water, which enhances maneuverability at lower speeds and in tight conditions. Fewer blades, like those on a three-blade propeller, typically generate greater top speed and are more efficient, making them ideal for faster inboard and outboard boats. The choice of blade count should align with the boat's intended use and performance goals, whether it's for leisurely sailing or high-speed boating, ensuring optimal propulsion and handling characteristics.
Find the ideal setup for your boating style in our complete range of Outboard Propellers.
What are the basics of inboard boat propellers and how do they differ from other types?
| Aspect | Inboard Propeller System | Other Propulsion Types (Outboard, Sterndrive) |
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| Engine Location | Mounted centrally inside the hull, forward of the transom. | Engine or drive unit is attached to or through the transom. |
| Propeller Drive | Fixed propeller shaft connected directly to the transmission. | Propeller is on a vertical driveshaft or integrated lower unit. |
| Steering Mechanism | Rudder directs water flow from the propeller for directional change. | The entire motor or drive unit swivels to change thrust vector. |
| Efficiency & Vibration | Long, straight shaft alignment promotes smooth, efficient power transfer. | Universal joints or gears in lower units can absorb more energy. |
| Typical Hull Suitability | Common on larger sailboats, trawlers, cruisers, and workboats. | Dominant on smaller recreational powerboats and runabouts. |
How does choosing between a 3-blade and 4-blade propeller affect performance and fuel efficiency?
A 3 blade propeller often provides a slight edge in top speed and maximum efficiency for lightweight, faster hulls. In contrast, a 4 blade propeller typically offers superior low-speed thrust, smoother operation, and better cruise efficiency for heavier vessels, trading a bit of peak speed for improved grip and handling.
What do diameter and pitch mean when selecting the right inboard propeller?
Diameter is the circle described by the blade tips, governing thrust and load capacity. Pitch is the theoretical forward travel per revolution, dictating speed and engine load.
Together, they define the right prop for your engine and hull:
- A larger diameter increases low-end thrust.
- More pitch allows higher potential speed.
- Incorrect combinations cause over or under-revving.
How does the bore size influence the fit and balance of an inboard boat propeller?
The bore is the central hole that mates the propeller to the tapered shaft. An imprecise fit causes wobbling, vibration, and potential damage to the shaft or strut. A perfectly matched bore, often achieved through CNC machining by brands like Acme Marine, ensures concentric balance and secure keyway engagement for marine propulsion integrity.
Where can you find high-quality inboard propellers for sale from brands like Acme?
Specialist prop shops and major marine distributors maintain an extensive inventory of inboard units from leading manufacturers. Propellers are available directly from select boat builders or through authorized online retailers that cater to yacht and commercial operators. Brands like Michigan Wheel, OJ, and VEEM offer robust options in NiBral material known for its strength and corrosion resistance.