Suzuki Prop Calculator helps you choose the ideal propeller size and pitch for your Suzuki outboard engine. Maximize performance, fuel efficiency, and speed.
Propeller Results
| Metric | Value |
|---|---|
| Propeller Diameter | |
| Propeller Pitch | |
| Propeller Slip | |
| Propeller Material |
| Marking Example | Description |
|---|---|
| 3 x 13 x 18 | 3 blades, 13″ diameter, 18″ pitch |
| 4 x 14 x 20 | 4 blades, 14″ diameter, 20″ pitch |
How to Use
- Horsepower: Enter Suzuki outboard HP (e.g., 25 HP, check engine manual, 2.5–300 HP).
- RPM: Use max RPM from Suzuki specs (e.g., 5500 RPM for DF25A).
- Gear Ratio: Find in Suzuki manual (e.g., 2.08:1 for DF25A).
- Desired Speed: Enter cruising speed in knots (imperial) or kph (metric).
- Boat Weight: Estimate total weight (hull, engine, gear) in lbs (imperial) or kg (metric).
Understanding Results
- Propeller Diameter: Width of prop circle (inches/cm). Suzuki predetermines based on engine size.
- Propeller Pitch: Distance prop moves per revolution (inches/cm). Higher pitch = faster, lower = quicker acceleration.
- Propeller Slip: Efficiency loss (10–20% typical). High slip (>20%) indicates poor prop match.
- Propeller Material: Aluminum (2.5–60 HP) for cost; stainless steel (>60 HP) for performance.
- Fit Tips: Ensure prop fits Suzuki gearcase and operates within RPM range (Web ID: 2).
Common Issues
- High Slip (>20%): Prop too small or pitch too high; try larger diameter or lower pitch.
- Over-Revving: Pitch too low; increase pitch by 1” (≈150–200 RPM drop).
- Under-Revving: Pitch too high; decrease pitch by 1” (≈150–200 RPM gain).
Note: Results are estimates for Suzuki outboards based on standard formulas. Consult a Suzuki dealer for final selection. Visit Suzuki Marine for more info.
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