Description
15.5"x17" 3-Blade Aluminum Prop | Boat Supply Store
This 15 1/2-inch diameter, 17-inch pitch aluminum propeller is engineered to optimize the performance of 115hp outboard engines by improving acceleration from rest and maintaining cruising RPMs. Constructed from durable aluminum alloy, it features a 3-blade design that balances thrust and efficiency for common boating applications like light offshore fishing or watersports. Its precise pitch facilitates efficient fuel consumption and reduces engine strain at optimal operating speeds.
Key Features
- Optimizes 115hp outboard performance
- Enhances hole shot for quicker plane
- Improves cruising efficiency and fuel economy
- Durable aluminum alloy construction
- Three-blade design for balanced thrust
- 15.5" diameter for optimal water engagement
- 17" pitch for effective speed and RPM management
- Direct replacement for specified engine models
Specifications
| Product Specifications | |
|---|---|
| Diameter | 15.5 in. |
| Pitch | 17 in. |
| Blade Count | 3 |
| Material | Aluminum |
| Engine Horsepower | 115hp |
Who This Is For
Boaters seeking to fine-tune their 115hp outboard's acceleration and fuel efficiency will benefit from this specific pitch and diameter combination. It is ideal for owners of smaller fishing boats or pontoons who prioritize responsive hole shot and steady cruising performance.
How It Compares
| Feature | 15.5"x17" 3-Blade Aluminum Prop | Mercury |
|---|---|---|
| Diameter | 15.5 inches | 14.5 inches |
| Pitch | 17 inches | — |
| Blade Count | 3 | 3 |
| Material | Aluminum | Aluminum |
Common Concerns Answered
Will this propeller fit my 115hp engine?
This 15 1/2" x 17" propeller is specifically designed for 115hp outboards, however, it is crucial to verify your engine's exact model and shaft splines against the provided FitmentData (if available) to ensure proper compatibility and optimal performance.
How will this propeller affect my boat's speed?
Increasing the pitch (from a lower value) generally increases top-end speed, while a smaller pitch enhances hole shot. This 17" pitch is selected to provide a balance, improving acceleration while maintaining respectable cruising speeds for a 115hp application.
Is aluminum the best material for my propeller?
Aluminum propellers offer a strong balance of performance and affordability, making them a popular choice. They are generally more resistant to impact damage than stainless steel, though stainless steel offers superior strength and corrosion resistance in demanding environments.
Frequently Asked Questions
What is the significance of the 'A3r' in the product name?
The 'A3r' designation typically refers to the specific blade geometry and cupping characteristics designed by Polaris Propeller USA, Inc. for optimized hydrodynamic performance and ventilation resistance.
How does propeller pitch affect engine RPM?
A higher pitch requires the engine to work harder to rotate the propeller the same number of times per mile. This generally results in higher top-end speeds but can reduce acceleration if the pitch is too high for the engine's power output.
What is the advantage of a 15.5-inch diameter over a smaller one?
A larger diameter propeller moves more water per revolution, which can improve thrust and acceleration. The 15.5-inch diameter is sized to effectively engage water for 115hp outboards without excessive drag or ventilation.
Can I use this propeller for watersports like tubing?
Yes, the 17-inch pitch on this 15.5-inch diameter propeller is well-suited for generating the necessary thrust for watersports by providing a strong hole shot, allowing the boat to get skiers or tubers up on plane quickly.
What is the expected lifespan of an aluminum propeller?
The lifespan of an aluminum propeller is highly dependent on usage, maintenance, and operating environment. Regular inspections for nicks, bends, or corrosion, along with avoidance of submerged obstacles, will maximize its service life.