2 Cycle Props
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FORUM CONTENTS

Up
2 Cycle Props
4 Cycle Props
Prop Balancing
Load Factors
By Manufacturer
Engine Size

 

 Basic Prop Alt Props

 

 Load Factor

 
.010 3x1.25   7.25
.020 4x3   11
.049/.051 6x3 5.5x4,6x3,6x4,7x3 15
.074 7x3   17
.09 7x4 7x3,7x5 18
.15 8x4 8x5,8x6,9x4 20
.19 9x4 8x5,8x6,9x5 22
.20 8x6 8x5,8x6,9x5 22
.25 9x4 8x5,8x6,9x5 22
.28 9x5   25
.29 - 30  9x6 9x7,10x5  
.32/34 10x5   25
.35 - .36 10x6 9x7,10x5,11x4  
.40 10x6 90x8,11x5 26
.45 10x7 10x6,11X5,11x6,12x45  
.46 10x7 10x6,11x5,11x6,11x7,12x4 27
.50 11x6 10x7,10x8,11x7,12x4,12x5  
.51 11x6 11-8, 12-6  28
.60 11-7 11-8, 12-6  30
.61 11x7   29
.61 long stroke 11x10   32
.70 12-6 11-8, 12-8,13-6, 14-4  28-32
.75/.80 13x6 12-8, 14-4, 14-5  32
.90 - 91 14x6 13-8, 15-6, 16-5  34
1.08 16x6 15-8, 18-5  38
1.20 16-8 16-10, 18-5, 18-6  41
1.25 16x8 18-8, 20-6  40
1.5 18x6   40
1.8 18x8 18-10, 20-6, 20-8, 22-6  44
2.0/2.2 20x8 18-10, 20-6, 20-10, 22-6  48
2.4/2.6 22x8   50
3.0 22x10   54
3.5/3.75 24x8   56
Recommended Prop size by Manufacturer
Evolution 
   100   16x5    
Magnum
   XLS .52A 9x6 10x5-8, 11x4-8, 12x3-6 24-30
O.S.
MAX 40 LA 11x5   27
MAX 46 LA 11x6, 11x7   28-29
SAITO
FA-30S (H)
/ FA-30S Golden Knight 		9x6, 10x5, 10x6   24-26
40a 10x7, 11x6   27-28
FA-50
FA-50 Golden Knight 		11 x 7, 11x8, 12x6, 12x5, 12x6, 11x7, 11x8, 12x6   29-30
FA-56/ FA-56 Golden Knight 11x8, 12x6, 12x7, 12x 6, 12x7 11x8, 12x6, 12x4   28-31
 FA-65
 FA-65 Golden Knight 		12 x 6, 12 x 8, 13 x 8 13 x 8, 14 x 5, 14 x 6 11 x 9, 12 x 8, 13 x 6    
 FA-72
 FA-72 Golden Knight 		12 x 8, 13 x 6, 13 x 8, 13 x 6, 13 x 8, 14 x 6, 11 x 9, 11 x 10,12 x 8,14 x 6 15 x 4 12 x 9    
 FA-80
 FA-80 Golden Knight 		 12 x 8, 13 x 6, 13 x 8, 13 x 6, 13 x 8, 14 x 6, 11 x 9, 11 x 10,12 x 8,14 x 6 15 x 4 12 x 9    
82a 13x8, 14x6, 14x8    
FA-91 Special
FA-91S Golden Knight 		12 x 8, 13 x 7,13 x 8, 13 x 7, 13 x 8, 14 x 5 11 x 10, 11 x 11, 12 x  9 14 x 6, 14 x 8 14 x 6, 15 x 4 12 x 10N, 13 x 9    
100 14x8, 15x6    
A-120 Special
FA-120S Golden Knight 		14 x 10,15 x 8, 15 x 10 15 x 8, 16 x 6, 16 x 8, 13.5 x 13.5, 14 x 10N 16 x 16, 16 x 8 18 x 6 14 x 12    

FA-150
FA-150 Golden Knight

 		15 x 8, 15 x 10, 16 x 8 16 x 8, 18 x 6, 18 x 8, 14 x 10N, 14 x 14, 18 x 6, 18 x 8 15 x 10, 15 x 11    

FA-180
FA-180 Golden Knight

 		15 x 8, 15 x 10, 15 x 11 16 x 8, 16 x 10, 14 x 13.5, 16 x 8, 16 x 10  18 x 6 15 x 12