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 Max Prop Easy 85 17" saildrive propeller offers reliable power and smooth maneuvering, with a four-blade folding design that reduces drag under sail and ensures efficient propulsion when motoring.
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$ 4,783.63
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1-2 weeks delivery time The Max Prop Easy 85 18" propeller delivers strong thrust and dependable performance, with a four-blade folding system that minimizes resistance and ensures smooth propulsion during sailing.
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$ 4,886.46
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1-2 weeks delivery time The saildrive version of the Max Prop Easy 85 18" provides excellent efficiency, low vibration, and reliable handling, with a robust bronze construction and four-blade folding design ideal for saildrive yachts.
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$ 4,886.46
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1-2 weeks delivery time The Max Prop Easy 85 19" propeller is designed for larger yachts, providing strong propulsion and stable handling with a four-blade folding design that keeps drag to a minimum.
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$ 4,886.46
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1-2 weeks delivery time The Max Prop Easy 85 20" propeller delivers maximum thrust and dependable performance, featuring a four-blade folding design for efficient propulsion and low sailing resistance.
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$ 4,968.41
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1-2 weeks delivery time The Max Prop Easy 90 16" propeller is a reliable folding design offering smooth propulsion and strong thrust, with reduced drag and durable Nikkel Aluminium Bronze construction for long-lasting use.
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$ 5,018.89
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1-2 weeks delivery time The Max Prop Easy 90 16" saildrive antishock propeller protects the drivetrain from sudden loads, combining a four-blade folding design with antishock technology for smooth operation and reduced stress.
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$ 5,817.07
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1-2 weeks delivery time The Max Prop Easy 90 17" propeller offers increased thrust and excellent maneuverability for larger yachts, with a four-blade folding design that provides smooth propulsion while minimizing drag.
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$ 5,018.89
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1-2 weeks delivery time This saildrive antishock version of the Max Prop Easy 90 17" propeller delivers powerful thrust while protecting the drivetrain from shock loads. Its four-blade folding design ensures smooth performance, reduced drag under sail, and improved comfort with marine-grade bronze construction.
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$ 5,817.07
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1-2 weeks delivery time The Max Prop Easy 90 with an 18" diameter is built for yachts demanding maximum thrust and reliable handling. Its four-blade folding configuration provides smooth and efficient propulsion while minimizing drag, with strong Nikkel Aluminium Bronze material ensuring durability.
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$ 5,132.15
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1-2 weeks delivery time The Max Prop Easy 90 18" saildrive propeller delivers efficient thrust and smooth maneuvering for saildrive-equipped yachts. Its four-blade folding design reduces drag under sail while ensuring reliable performance when motoring, constructed from durable Nikkel Aluminium Bronze.
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$ 5,132.15
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1-2 weeks delivery time This saildrive antishock version of the Max Prop Easy 90 18" propeller protects the drivetrain from sudden load changes. The four-blade folding design ensures smooth power delivery, reduced vibration, and dependable sailing performance with marine-grade bronze construction.
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$ 5,930.32
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1-2 weeks delivery time The Max Prop Easy 90 19" propeller is designed for yachts requiring strong thrust and precise handling. Its four-blade folding configuration provides smooth propulsion, reduced drag under sail, and reliable performance, made from durable Nikkel Aluminium Bronze.
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$ 5,132.15
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1-2 weeks delivery time The Max Prop Easy 90 19" saildrive propeller offers efficient thrust, smooth operation, and reduced sailing resistance. Its four-blade folding design delivers dependable propulsion for saildrive-equipped yachts with strong marine-grade bronze construction.
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$ 5,132.15
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1-2 weeks delivery time The Max Prop Easy 90 19" saildrive antishock propeller combines powerful thrust with drivetrain protection. Its antishock system reduces impact loads, while the four-blade folding design ensures smooth and efficient propulsion with durable Nikkel Aluminium Bronze.
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$ 5,930.32
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1-2 weeks delivery time The Max Prop Easy 90 20" propeller provides strong and consistent propulsion for yachts. Its four-blade folding design ensures smooth thrust, excellent maneuverability, and reduced drag while sailing, constructed from robust Nikkel Aluminium Bronze.
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$ 5,247.26
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1-2 weeks delivery time The Max Prop Easy 90 20" saildrive propeller delivers efficient thrust and smooth operation for saildrive-equipped yachts. The four-blade folding configuration minimizes drag under sail while providing reliable propulsion with durable marine-grade bronze construction.
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$ 5,247.26
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1-2 weeks delivery time The Max Prop Easy 90 20" saildrive antishock propeller combines powerful thrust with drivetrain protection. Its antishock system reduces impact loads, and the four-blade folding design ensures smooth, efficient propulsion with strong Nikkel Aluminium Bronze material.
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$ 6,045.25
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1-2 weeks delivery time The Max Prop Easy 90 21" propeller is built for larger yachts requiring maximum thrust and stable handling. Its four-blade folding configuration provides reliable propulsion, reduced resistance under sail, and smooth operation with durable Nikkel Aluminium Bronze.
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$ 5,247.26
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1-2 weeks delivery time The Max Prop Easy 90 21" saildrive propeller delivers dependable performance, smooth thrust, and reduced sailing resistance. Its four-blade folding design ensures efficient power delivery for saildrive-equipped yachts, made from marine-grade bronze.
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$ 5,247.26
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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) |
|---|---|---|
| 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.