Propeller FAQs
How do I replace my existing prop?
Most modern propellers have some indentification information stamped into the prop. If you find a part number, try using the "Search by Part Number" box at the top of the page to find a match. You might also find diameter and pitch information (for example 12.5" x 15") which you can use to select a replacement prop.
What are splines?
These are the "peaks" and "valleys" on the propeller shaft and inside the prop hub. Count the peaks to determine the correct spline count.
How do I determine my propeller's diameter?
You can calculate your propeller diameter by measuring from the center of the prop shaft out the the tip of a blade and multiply that by two (2). If you could draw a circle around a prop at the tips of the blades, the diameter would be the distance across that circle.
What is pitch?
Pitch is the distance a propeller would move forward in one revolution in ideal conditions. In other words, a prop with a 17-inch pitch would move your boat forward 17 inches per revolution.
Right- or left-hand rotation?
Right-hand (clockwise) rotation is standard for single motor outboard boats. Boats with more than one outboard will have at least one motor with a left-hand turning (counter clockwise) reverse rotation prop.
Aluminum or stainless steel?
Aluminum props are common, affordable, and forgiving when running in waters where prop strikes can take place. The extra cost of stainless steel buys better performance and durability due to the stronger blades, and much greater corrosion protection.
3-blade versus 4-blade propellers
3-bladed props are by far the most common offering the best speed performance. 4-bladed props offer higher thrust, better stern lift and smooth operation for heavy boats or tow sports.
What are cupped blades?
Cupping refers to a curved shape of a blade to improve efficiency at high speeds.
What is blade rake?
Rake refers to the angle or sweep of the blade.
Solas Propeller Models
AMITA 3
- Exclusive Solas squeeze casting process
- Stronger blades with better performance
- Outstanding acceleration and top speed
AMITA 3 Plus
- Exclusive squeeze cast process
- Stronger blades with better performance
- Larger blades than the Amita 3 series for Superior thrust
- Suitable for heavy boats
AMITA 4
- Exclusive Solas squeeze cast process
- Stronger blades with better performance
- Great Acceleration and Midrange performance
- Great stern lift & handling
AMITA HIGH THRUST
- Exclusive squeeze cast process
- Stronger blades with better performance
- Excellent forward and reverse thrust
- Ideal for kicker engines with heavy loads
AMITA BRAVO II
- MerCruiser Bravo II drives only
- Stronger blades with better performance
- Excellent forward and reverse thrust
B3
- MerCruiser Bravo III drive only
- Excellent acceleration and top speed
- Cupped blade design increases bite & reduces slip
- Highly polished
HR TITAN 3
- Performance prop for high speed planing hulls
- High rake blade design provides excellent bow lift
- Excellent acceleration and top speed
- Cupped blade design increases bite & reduces slip
HR TITAN 4
- Great stern lift & acceleration
- High rake and cupped blade design
- Powerful thrust & very smooth performance
- Increased speed & economy in the mid-range
LEXOR
- Large diameter & blade area for big boats
- Great high speed and mid range performance
- Excellent fuel economy for offshore boats
NEW SATURN
- All-around performance
- Good acceleration
- Large ear blade design
SATURN
- All-around general purpose performance
- More durable than aluminum
- Better efficiency than aluminum
TITAN
- Performance prop for high speed planing hulls
- High rake blade design provides excellent bow lift
- Excellent acceleration and top speed
- Cupped blade design increases bite & reduces slip