COOLIDGE Propellers Props Blade Deg Rh 30-COOLIDGE-16RH

( Brand: Coolidge ), ( Manufacturer Part Number: 30COOLIDGE16RH ), ( Part Type: Propeller Prop Blade ), ( Stamp: Scott Paper ), ( Propeller Rotation: Standard, Rh ), ( Country Of Origin: United States )

Review COOLIDGE 30coolidge16rh Large Propellers Props 30 Inch In Diameter Brass Blade Deg Rh fits 2016

The **Coolidge 30-Coolidge16RH** propeller is a high-performance, precision-engineered fixed-pitch propeller designed for aircraft that demand exceptional efficiency, reliability, and durability. Crafted from high-grade, corrosion-resistant aluminum alloy, this **30-inch, 16-degree right-hand (RH) propeller** features a **three-blade configuration** optimized for balanced thrust output and reduced vibration, ensuring smoother operation and extended lifespan. The **16-degree pitch** is ideal for general aviation aircraft, offering a versatile balance between takeoff performance and cruising efficiency, making it well-suited for a variety of applications, including training, personal transport, and light utility flights. The propeller s aerodynamic design incorporates smooth, contoured blades with a refined leading edge to minimize drag and maximize thrust while maintaining structural integrity under high RPM conditions. Engineered with **Coolidge s proprietary blade shaping technology**, this propeller delivers superior lift-to-drag ratios, enhancing fuel efficiency and overall flight performance. The **right-hand rotation** ensures compatibility with most standard aircraft engines, providing seamless integration with existing propulsion systems. Built to withstand rigorous flight cycles, the **30-Coolidge16RH** is reinforced with precision-machined hub components and balanced for optimal centrifugal force distribution, reducing wear and preventing blade fatigue. Whether used in a single-engine piston aircraft or a specialized light aircraft, this propeller exemplifies Coolidge s commitment to innovation and engineering excellence, offering pilots a dependable tool for achieving peak flight performance with minimal maintenance demands.

### **Pros and Cons of Buying Coolidge 30" x 16 RH Propellers (30Coolidge16RH)**

1. **High Performance for Speed and Efficiency** The 30-inch diameter and 16 right-hand (RH) pitch are optimized for high-speed applications, making them ideal for boats designed for cruising, fishing, or light planing. The larger diameter provides better thrust at lower RPMs, improving fuel efficiency in certain conditions.

2. **Durability and Quality Construction** Coolidge propellers are known for their robust materials, often featuring stainless steel blades with precision machining. This ensures longevity, especially in saltwater environments where corrosion resistance is critical.

3. **Versatility for Different Boat Types** These propellers work well on outboard motors (especially 150 300 HP) and sterndrive systems, making them suitable for a range of recreational and performance boats. The 16 pitch balances acceleration and top-end speed effectively.

4. **Better Fuel Economy in Some Cases** The larger diameter and moderate pitch can reduce RPMs at cruising speeds, potentially improving fuel efficiency compared to smaller, high-pitch props.

5. **Compatibility with Common Motor Sizes** The 30-inch size fits well with mid-range outboards and sterndrives, offering a good balance between power and maneuverability.

6. **Reduced Cavitation** The design helps minimize cavitation at higher speeds, which can extend the life of the propeller and reduce noise.

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1. **Limited Top-End Speed** While the 16 pitch is good for cruising, it may not be optimal for boats designed for extreme speed or heavy planing. A higher pitch (e.g., 18 20 ) might be better for high-performance applications.

2. **Potential for Lower Acceleration** Compared to a lower pitch (e.g., 12 14 ), a 16 pitch may feel slower off the line, especially in boats that require quick bursts of speed.

3. **Weight Consideration** Larger propellers like the 30-inch Coolidge can be heavier, which may slightly reduce handling responsiveness in smaller boats.

4. **Cost** High-quality propellers from Coolidge are not cheap, and if installed incorrectly or damaged, they can be expensive to replace.

5. **Not Ideal for Deep-V or High-Speed Boats** Boats with deep-V hulls or those designed for high-speed planing may benefit more from a higher pitch or a different blade design to prevent excessive RPMs and reduce stress on the motor.

6. **Maintenance Requirements** Like all propellers, the 30-inch Coolidge needs regular inspection for pitting, corrosion, or damage, especially in saltwater.

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The **Coolidge 30" x 16 RH propeller** is an excellent choice for boats that prioritize **cruising efficiency, moderate speed, and durability** over extreme acceleration or high-speed planing. It strikes a good balance between thrust, fuel economy, and versatility, making it suitable for fishing boats, cruisers, and light performance applications. However, if your boat requires **faster acceleration, higher top speeds, or deep-V handling**, a different pitch or blade design may be more appropriate.

- **Buy if:** You have a **mid-sized outboard or sterndrive (150 300 HP)**, your boat is primarily used for **cruising or fishing**, and you want a **durable, efficient propeller** that balances speed and fuel economy.

- **Consider alternatives if:** Your boat is **high-performance, deep-V, or requires aggressive acceleration**, in which case a **higher pitch (18 20 ) or a different blade design** might be better.

- **Ensure proper installation** by a professional to maximize performance and longevity.

For most recreational and utility boats, the **Coolidge 30" x 16 RH** is a solid, reliable choice. Always verify compatibility with your motor s RPM range and consult with a marine mechanic if unsure.

Details:

Located Shelf 301D. Please feel free to ask questions and I will answer the best of my ability. Has some minor knocks and blemishes in a few spots, see photos. Also has some discoloration on the inside/center prop area.

Prob seems to be in good overall condition. Not sure if that is normal or intentional.

part #: 30-coolidge-16rh price

• $1495.00

specifications propboapar:

• for years: 2016
• brand: Coolidge
• mpn: 30coolidge16rh
• part type: Propeller Prop Blade
• stamp: Scott Paper
• propeller rotation: Standard, Rh
• country of origin: United States

offer propboapar:

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

payments propboapar:

• wallet: Paypal
• other
• credit card: Mastercard

seller propboapar:

• city: Kalispell, Montana
• # reviews: 1370
• rating: 99.6%

general propboapar:

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

shipping propboapar:

• class: Economy
• cost: $46.86
• transit: 3-7 Days
• type: Calculated
• carrier: FedEx
• service: FedEx Ground Economy

returns propboapar:

• policy: No Returns

Coolidge 30-COOLIDGE-16RH Is Similar To:

• Coolidge C9115 26coolidge15rh Vintage 26 Inch Rh Brass Propeller 39 Lbs Original Patina Free Shipping (44.8% similar) I used a tape measure, not micrometer so if it matters please let me know. I could not find any damage, plenty of pictures for you to see. Bore is app 1/1 /2 taper down to 3/16. Pretty heavy at 39 lbs. Very nice with original patina...(November 11th, 2024)