FEDERAL EQUI-POISE 13RH17 Rh Ni Bral Inboard Prop 17P 1/8 P7565

( Brand: Federal Equi-poise ), ( Manufacturer Part Number: 13RH17 ), ( Part Type: Prop ), ( Propeller Rotation: Standard ), ( Country Of Origin: United States )

Review FEDERAL EQUI POISE Rh Ni bral Inch 17p Inboard Prop 1/8 Bore fits 2013

The **Federal Equi-Poise 13RH17 RH Ni-Bral 1/8 x 7565 Inboard Propeller** is a meticulously engineered marine propeller designed to deliver exceptional performance, efficiency, and durability for high-performance inboard engines, particularly those found in sportfishing boats, cruisers, and performance yachts. Crafted from **Ni-Bral**, a high-strength nickel-bronze alloy, this propeller is engineered to withstand the rigorous demands of saltwater environments while maintaining structural integrity under heavy loads. The **13RH17** designation indicates a **13-inch diameter** with a **17-inch pitch**, striking a balance between acceleration and cruising efficiency, making it ideal for applications where both speed and smooth operation are critical. The **right-hand rotation (RH)** orientation ensures compatibility with engines that spin clockwise when viewed from the rear, a common configuration in many modern inboard setups.

This propeller features a **unique blade design** optimized for reduced cavitation, improved thrust, and minimized vibration, contributing to a quieter, more comfortable ride. The **1/8 pitch ratio** (1/8 inch per revolution) provides a fine, progressive blade angle that enhances acceleration and handling at lower speeds while maintaining steady cruising performance. The **7565** designation refers to the specific blade count and shape, which in this case appears to be a **three-blade configuration** with a slightly aggressive rake and cupped blade tips. These design elements work together to maximize hydrodynamic efficiency, reducing drag and improving fuel economy without sacrificing power delivery. The **cupped blade tips** help manage water flow more effectively, reducing turbulence and enhancing overall propulsion efficiency, particularly in choppy or rough conditions.

Built to Federal s high standards, this propeller is **heat-treated and stress-relieved** to ensure long-lasting performance and resistance to corrosion, even in the harshest saltwater environments. The **Ni-Bral material** offers superior strength and wear resistance compared to traditional aluminum or stainless steel propellers, making it an excellent choice for anglers and boaters who demand reliability and longevity. Whether used in a **V8-powered sportfisherman** or a **high-performance cruiser**, this propeller excels in applications where smooth operation, quick acceleration, and efficient power transfer are essential. Its precision engineering and robust construction make it a standout choice for those seeking a propeller that delivers both performance and endurance, ensuring countless hours of trouble-free operation on the water.

### **Pros and Cons of buying a Federal Equi-Poise 13RH17 RH Ni-Bral Inboard Prop (1/8 P7565)**

1. **High Efficiency for Inboard Engines** The 13RH17 design is optimized for inboard applications, offering better thrust and efficiency compared to generic propellers. The RH (right-hand) rotation is standard for most inboard engines, ensuring proper torque balance.

2. **Ni-Bral Material** Made from nickel-brass (Ni-Bral), this propeller is highly resistant to corrosion, wear, and cavitation. This material is durable and maintains sharpness longer than standard bronze or stainless steel props, reducing the need for frequent sharpening.

3. **Balanced Blade Design** The 13-inch diameter and 17-inch pitch are well-suited for moderate to high-performance inboard engines, providing a good balance between speed and fuel efficiency. The blade area ratio (BAR) is likely optimized for smooth operation without excessive cavitation.

4. **Equi-Poise Construction** Federal s Equi-Poise technology ensures that the propeller is dynamically balanced, reducing vibration and improving ride comfort. This is particularly beneficial for long-term use and passenger comfort.

5. **Compatibility with Common Engines** The 1/8 pitch (P7565) is a standard size for many inboard engines, making it a versatile choice for boats with similar power ranges (typically 100 300 horsepower, depending on engine type).

6. **Aftermarket Availability & Repairs** Federal props are widely available, and their blades can be sharpened or replaced individually if damaged. This reduces the cost of full propeller replacement.

7. **Fuel Efficiency** A well-matched propeller can improve fuel economy by reducing drag and optimizing engine performance within its operating range.

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1. **Potential Mismatch with Engine Power** If the engine s horsepower significantly exceeds the propeller s optimal range (e.g., a high-RPM outboard on an inboard propeller), it may lead to excessive cavitation, reduced efficiency, or even blade damage. Always verify compatibility with the engine s power curve.

2. **Cost Compared to Bronze Props** Ni-Bral props are more expensive than standard bronze props, which may be a consideration for budget-conscious buyers. However, the longevity and performance benefits often justify the cost.

3. **Limited Customization** Unlike some high-end props, this is a standard design. If the boat requires a highly customized pitch or diameter for specific performance needs, other brands (e.g., Mercury, Volvo Penta, or custom propellers) may offer more flexibility.

4. **Potential for Cavitation at High Speeds** Depending on the boat s hull design and load, the 13RH17 may experience cavitation if operated at high speeds or with excessive load. This can cause noise, vibration, and long-term blade erosion.

5. **Installation and Removal Complexity** Inboard props often require more effort to install or remove compared to outboard props, especially if the boat has a deep-hull or complex stern drive setup.

6. **Weight Consideration** Ni-Bral props are heavier than aluminum or bronze props, which may slightly affect maneuverability in smaller boats or when handling.

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The **Federal Equi-Poise 13RH17 RH Ni-Bral Inboard Prop (1/8 P7565)** is a strong, durable, and efficient choice for boats with inboard engines, particularly those in the moderate to high-performance range. Its Ni-Bral construction ensures longevity and resistance to corrosion, while the Equi-Poise balance reduces vibration for a smoother ride. However, it is essential to ensure that the propeller matches the engine s power and the boat s intended use to avoid inefficiencies or damage.

For **best results**, verify the propeller s compatibility with the engine s horsepower, RPM range, and the boat s hull design. If the engine operates at very high power levels or requires extreme performance tuning, consulting a marine propeller specialist may be advisable to explore alternatives like a custom pitch or a different blade design.

- You have an inboard engine (e.g., Mercury, Yamaha, Volvo Penta, or similar) in the appropriate power range (typically 100 300 HP, depending on engine type).

- You prioritize durability, corrosion resistance, and reduced vibration.

- The 13-inch diameter and 17-inch pitch align with your boat s performance needs (check with a marine mechanic or propeller calculator for confirmation).

- You want a reliable, aftermarket option with good availability for repairs or sharpening.

- Your engine operates at very high power levels (e.g., 400 HP) where a custom propeller might be more efficient.

- You need a lighter propeller for better maneuverability in a smaller boat.

- You require a different pitch or diameter for optimal speed or fuel efficiency in your specific hull design.

For most standard inboard applications, this propeller offers an excellent balance of performance, durability, and value. Always confirm sizing and compatibility before purchase.

Details:

PROP NUMBER 7565 IN MY INVENTORY. I HAVE 1000S OF PROPS SO IF THIS IS NOT THE PROP OR PITCH YOU ARE LOOKING FOR UNSURE FEEL FREE TO SEND ME A MESSAGE. RIGHT HAND STANDARD ROTATION NI-BRAL 13 X 17P FEDERAL EQUI-POISE INBOARD PROPELLER, 1/8 1.25 BORE, 13RH17, 5 73, CUPPED EDGE, NICE PROP. I ONLY SHIP IN THE LOWER 48 FOR FEE ASSOCIATED WITH THIS LISTING IF PART OF USA.

part #: 13rh17 prices

• $308.00-$343.00

specifications propboapar:

• for years: 2013
• brand: Federal Equi-poise
• mpn: 13rh17
• part type: Prop
• propeller rotation: Standard
• country of origin: United States

seller propboapar:

• # reviews: 1944
• city: Gainesville, Florida
• rating: 100.0%

returns propboapar:

• policy: No Returns

offer propboapar:

• sold: 0
• options: Ship-to-home
• availability: In Stock
• started: February 13, 2026
• quantity: 1

general propboapar:

• condition: Used
• Parts Accessories > Boat Parts > Propellers

shipping propboapar:

• type: Fixed
• transit: 5-10 Days
• class: Standard
• service: Standard
• cost: $25.00

payments propboapar:

• other
• credit card: Mastercard
• wallet: Google-pay

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