See charts below for recommended sizes.
What makes POWERFIN Propellers the best on the market?
Please allow 6 to 8 weeks for manufacturing and delivery of your new propeller.
-
Carbon Fiber Composite ... built with high grade carbon fiber materials, our props are top quality
-
Lightweight ... our hollow core technology makes our blades the lightest, lowest MOI available
-
Quiet ... both our design and precision balancing makes our props extremely quite with very little vibration
-
Safe & Reliable ... with 20 years of history, our propellers have never been responsible for an aircraft accident
-
Performance ... in 3rd party static thrust tests, our propellers consistently outperform our competitors. Every time
-
Looks ... our beautiful high-gloss finish is sure to make a statement and turn some heads
-
Ground Adjustable Pitch ... optimize your performance any time of year and at any altitude with our fully pitch adjustable blades
-
Replaceable Blades ... if you damage one blade, replace just your damaged blade rather than the entire prop assembly
-
Handcrafted in America ... our blades are proudly 100% handcrafted in America and we take great pride in our work.
Which Direction?
Read the following carefully prior to selecting prop rotation!
The direction of spin...
Direction of rotation is always noted from the REAR of the vehicle. If you are standing behind the aircraft and getting blown by the prop wash, which direction is it turning?
Counter-clockwise is a LEFT turning prop and a clockwise is a RIGHT turning prop.
The following is a fail safe list to follow for rotation direction.
TWO-STROKES
For all TWO-STROKE engines normally used with Ultralight/LSA:
- PUSHERS with GEAR-boxes run a RIGHT turning prop
- PUSHERS with BELT-drives run a LEFT turning prop
- TRACTORS with GEAR-boxes run a LEFT turning prop
- TRACTORS with BELT-drives run a RIGHT turning prop
See charts below for recommended sizes.
Recommended Props for
HIRTH 2702: 40 HP <> 5500 Max Rpm
|
Reduction Ratio |
MAX PROP RPM (with Eng RPM: 5500) |
'B' Blade (#Blades/Dia) |
| 1.8 |
3055 |
2/58 or 3/51 |
| 2.00 | 2750 | 2/60 or 3/53 |
| 2.16 | 3546 | 2/61 or 3/56 |
| 2.29 | 2401 | 2/62 |
| 2.59 | 2123 | 2/64 or 3/58 |
| 3.16 | 1740 | 3/62 or 4/59 |
Recommended Props for
Hirth 2704 / 3202: 55 HP <> 5500 Max Rpm
|
Reduction Ratio |
MAX PROP RPM (with Eng RPM: 5500) |
'B' Blade (#Blades/Dia) |
| 2.16 | 2314 | 2/65 or 3/61 |
| 2.29 | 2183 | 3/65 |
| 2.59 | 1930 | 3/65 |
Recommended Props for
Hirth 2706 & 3203: 65 HP <> 6200 Max Rpm
|
Reduction Ratio |
MAX PROP RPM (with Eng RPM: 6200) |
'B' Blade (#Blades/Dia) |
| 2.16 |
2870 |
2/63 or 3/58 3/60 |
| 2.29 | 2707 | 2/65 or 3/61 |
| 2.59 | 2393 |
3/64 |
Recommended Props for
Rotax 447: 40 HP <> 6500 Max Rpm
|
Reduction Ratio |
MAX PROP RPM (with Eng RPM: 6500) |
'B' Blade (#Blades/Dia) |
| 2 |
3250 |
2/56 |
| 2.24 | 2901 |
2/59 |
|
2.58 2.62 |
2500 |
2/62 3/57 |
| 3 |
2166 |
2/65 3/61-62 |
| 3.47 |
1873 |
3/64 |
Recommended Props for
Rotax 503 DC: 52 Hp <> 6500 Max Rpm
|
Reduction Ratio |
MAX PROP RPM (with Eng RPM: 6500) |
'B' Blade (#Blades/Dia) |
|
2.58 2.62 |
2500 |
2/65 or 3/60 4/58 |
Recommended Props for
Rotax 503 SC: 46 HP <> 6250 Max Rpm
|
Reduction Ratio |
MAX PROP RPM (with Eng RPM: 6250) |
'B' Blade (#Blades/Dia) |
| 2 | 3125 | 3/52 |
|
2.58 2.62 |
2405 |
2/63 3/59 |
|
3 |
2083 |
3/64 or 4/60 |
|
3.47 |
1801 | 4/63 or 5/60 |