To continue to serve your propeller needs, POWERFIN has expanded with its relocation to
El Campo, Texas - just
65-miles SW of Houston. 

We are in the process of doubling (again) our manufacturing capacity!

907 S. Mechanic
El Campo, TX 77437
Ph: 979-543-7933

made in America

 

 

HIRTH ENGINE GUIDE
PROPELLER RECOMMENDATION CHART


Read the Key

       To understand the Tables below please note that "2/56 or 3/52" means you can choose a 2-blade Hub with a 56" length or a 3-blade Hub with a 52" length        

HIRTH 33: 28 HORSEPOWER <> 6000 MAX RPM
Reduction
RATIO 		 MAX PROP RPM
(with Eng RPM: 6000)		 'B' Blade
(#Blades/Dia) 		C 'E' Blade
(#Blades/Dia)		 F
1.8 3333     3/40  
2.2 2727     3/44  
2.5 2400 2/54   3/48  


HIRTH 2702: 40 HORSEPOWER <> 5500 MAX RPM

Reduction
RATIO

MAX PROPRPM
(with Eng RPM: 5500)

'B' Blade
(#Blades/Dia) 		C E 'F' Blade
(#Blades/Dia)
2.16 2546        
2.29 2401 2/62      
2.59 2123 2/64
3/58 		     
3.16 1740 3/62     2/68
3/62
3.65 1506 3/65     2/70
3/66


HIRTH F23: 50 HORSEPOWER <> 6150 MAX RPM
Reduction
RATIO 		MAX PROP RPM
(with Eng RPM: 6150) 		'B' Blade
(#Blades/Dia) 		'C' Blade
(#Blades/Dia) 		E F
1.8 2555 2/60 3/57    
2.2 2500 2/60 3/58    
2.5 2200 2/63      


HIRTH 2703: 55 HORSEPOWER <> 6200 MAX RPM
Reduction
RATIO  		MAX PROP RPM
(with Eng RPM: 6200) 		'B' Blade
(#Blades/Dia) 		'C' Blade
(#Blades/Dia) 		E 'F' Blade
(#Blades/Dia)
2.16 2870 2/58       
2.29 2707 2/60      
2.59 2393 2/63
3/60 		3/61    
3.16 1962 3/65     2/70
3/68
3.65 1698       3/72


HIRTH 2704 / 3202: 55 HORSEPOWER <> 5500 MAX RPM
Reduction
RATIO  		MAX PROP RPM
(with Eng RPM: 5500) 		'B' Blade
(#Blades/Dia) 		'C' Blade
(#Blades/Dia) 		E 'F' Blade
(#Blades/Dia)
2.16 2314 2/65
3/61 		3/65   2/67
3/62
2.29 2183 3/65     2/70
3/65
2.59 1930 3/65     2/74
3/68
3.16 1582       3/74
3.65 1369        


HIRTH 3502: 60 HORSEPOWER <> 6000 MAX RPM
Reduction
RATIO  		MAX PROP RPM
(with Eng RPM: 6000) 		'B' Blade
(#Blades/Dia) 		'C' Blade
(#Blades/Dia) 		E 'F' Blade
(#Blades/Dia)
2.16 2777        
2.29 2620 3/63
4/60 		    2/68
2.59 2316 3/65
4/62 		    3/66
3.16 1898 5/65     3/70
4/67
3.65 1643       3/74
4/70
5/67


HIRTH 2706 & 3203: 65 HORSEPOWER <> 6200 MAX RPM
Reduction
RATIO  		MAX PROP RPM
(with Eng RPM: 6200) 		'B' Blade
(#Blades/Dia) 		'C' Blade
(#Blades/Dia) 		E 'F' Blade
(#Blades/Dia)
2.16 2870 2/63
3/58		      
2.29 2707 2/65
3/61 		    2/66
2.59 2393 3/64 3/64   2/70
3/65
3.16 1962       2/75
3/72
4/69
3.65 1698       3/74


HIRTH 3503: 70 HORSEPOWER <> 6500 MAX RPM
Reduction
RATIO  		MAX PROP RPM
(with Eng RPM: 6500) 		'B' Blade
(#Blades/Dia) 		'C' Blade
(#Blades/Dia) 		E 'F' Blade
(#Blades/Dia)
2.16 3009        
2.29 2838 3/65
4/63 		    2/71
2.59 2509 4/65     3/69
3.16 2056       3/72
4/69
3.65 1780       4/72
5/69


HIRTH F30: 80 HORSEPOWER <> 5500 MAX RPM
Reduction
RATIO  		MAX PROP RPM
(with Eng RPM: 5500) 		'B' Blade
(#Blades/Dia) 		'C' Blade
(#Blades/Dia) 		E 'F' Blade
(#Blades/Dia)
2.03 2709 3/64     2/68
3/63
2.25 2444 3/65     2/72
3/68
2.60 2115       3/72
2.96 1858       3/75
4/69
3.33 1651       5/71


HIRTH F30: 85 HORSEPOWER <> 5500 MAX RPM
Reduction
RATIO  		MAX PROP RPM
(with Eng RPM: 5500) 		'B' Blade
(#Blades/Dia) 		'C' Blade
(#Blades/Dia) 		E 'F' Blade
(#Blades/Dia)
2.03 2709 3/65
4/62 		    2/69
3/64
2.25 2444 4/65     2/73
3/68
2.60 2115 5/65     3/73
2.96 1858       4/72
3.33 1651       5/72


HIRTH 3701: 100 HORSEPOWER <> 6000 MAX RPM
Reduction
RATIO  		MAX PROP RPM
(with Eng RPM: 6000) 		'B' Blade
(#Blades/Dia) 		'C' Blade
(#Blades/Dia) 		E 'F' Blade
(#Blades/Dia)
2.16 2777 4/65     3/68
2.29 2620 5/65     3/72
4/68
2.59 2316       3/75
4/70
5/66
3.16 1898       4/74
5/70
3.65 1643       5/74


HIRTH F30: 110 HORSEPOWER <> 6200 MAX RPM
Reduction
RATIO  		MAX PROP RPM
(with Eng RPM: 6200) 		'B' Blade
(#Blades/Dia) 		'C' Blade
(#Blades/Dia) 		E 'F' Blade
(#Blades/Dia)
2.03 3054 4/64     3/66
2.25 2855 5/64     3/68
2.60 2384       3/74
2.96 2094       4/74
3.33 1861       5/74

    POWERFIN Propellers manufactures Light Sport propeller applications which include UAV, LSA, Ultralight, and Experimental propellers as well as wind energy generating blades.

POWERFIN is dedicated to combining the best of good-ole-American-fashion integrity and innovation with advanced composite technologies.
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