Description
15.5" x 13" 3-Blade A3R Prop | Boat Supply Store
This 15 1/2 inch diameter by 13 inch pitch aluminum propeller is engineered to optimize thrust and efficiency for a wide range of outboard and sterndrive applications. Its A3r design provides a balanced blend of acceleration and top-end speed, suitable for everything from general cruising to watersports. With a robust 3-blade configuration, it ensures reliable power transfer across varied marine environments, from the shallow flats of the Texas coast to the open waters of the Gulf.
Key Features
- Maximizes thrust for superior hole-shot performance.
- Optimizes efficiency for extended range and fuel economy.
- Durable aluminum construction withstands demanding marine conditions.
- Balanced 3-blade design for smooth operation.
- Engineered for accelerated planing.
- Designed for improved top-end speed.
- Compatible with various outboard and sterndrive engines.
- Provides reliable power transfer across operational RPMs.
Specifications
| Product Specifications | |
|---|---|
| Diameter | 15 1/2" |
| Pitch | 13" |
| Material | Aluminum |
| Blade Count | 3 |
| Series | A3r |
Who This Is For
Boaters seeking to upgrade from a standard propeller for improved acceleration and overall performance will find this prop beneficial. It is ideal for owners of compatible sterndrive or outboard engines looking for a reliable, cost-effective enhancement.
How It Compares
| Feature | 15.5" x 13" 3-Blade A3R Prop | Quicksilver |
|---|---|---|
| Diameter | 15 1/2" | 15 1/2" |
| Pitch | 13" | — |
| Blade Count | 3 | 3 |
| Material | Aluminum | Aluminum |
Common Concerns Answered
Will this propeller fit my specific boat engine?
Propeller fitment is crucial. This 15 1/2" x 13" A3r propeller is designed for specific outboard and sterndrive engine models. Verify your engine's required propeller diameter, pitch, and spline count against the product specifications and your engine's manual to ensure compatibility before purchasing.
How does an aluminum propeller hold up in saltwater?
While aluminum propellers are susceptible to corrosion in saltwater environments over extended periods, this Michigan Wheel A3r propeller is constructed for marine use. Regular cleaning, rinsing with fresh water after each use, and proper storage will significantly prolong its lifespan and maintain performance.
Can I expect a significant performance difference with this propeller?
Yes, upgrading to a correctly sized and pitched propeller like this A3r model can yield noticeable improvements in acceleration, top-end speed, and fuel efficiency compared to an underperforming or incorrect propeller. Performance gains are contingent on matching the propeller's characteristics to your specific boat hull and engine's power curve.
Frequently Asked Questions
What does 'A3r' signify in the propeller designation?
The 'A3r' designation refers to Michigan Wheel's specific propeller series, indicating its design characteristics, including blade shape, rake, and cup. This design is engineered for a balance of performance attributes suitable for general boating applications.
How do I determine the correct propeller pitch for my boat?
Propeller pitch is a critical factor affecting engine RPM and boat speed. Your boat's manufacturer often specifies a recommended pitch range. Incorrect pitch can lead to over-revving, lugging the engine, or reduced performance. It's advised to consult your engine manual or a marine professional for precise recommendations based on your boat's weight and intended use.
Is a 15 1/2 inch diameter a common size for outboard motors?
A 15 1/2 inch diameter is a common size for propellers used on a range of larger outboard motors and sterndrive applications, typically found on boats between 18 to 25 feet. This diameter is well-suited for generating substantial thrust for these vessel sizes.
What is the advantage of a 3-blade propeller over a 2-blade or 4-blade?
A 3-blade propeller generally offers a good compromise between acceleration, top-end speed, and fuel efficiency. It provides more thrust than a 2-blade and is typically more efficient at higher speeds than a 4-blade, while also being more economical to manufacture.
Can this propeller be used for towing watersports?
Yes, the A3r design's emphasis on acceleration and thrust makes this 15 1/2" x 13" propeller suitable for towing watersports like skiing or wakeboarding, where a strong hole-shot is essential to get riders out of the water quickly.
