HOW TO

This section is to assist you in choosing THE XOAR PROP to maximize your engines' performance.
We have recommended props for gas engines and glow engines and also included a conversion chart for two, three, four bladed props.
Choose between the recommended sizes to get your desired performance.
Engine Disp C.C. Xoar 2 Bladed Prop Xoar 3 Bladed Prop
24cc 16X8 16X10   15 x 10  
resonance tube 17X6 17X8 18X8    
26cc 16 x 10 17 x 8   15 x 10  
28cc 18 x 6 17 x 10 17 x 8 16 x 10 16 x 8
42cc 20X8 20X10   18 x 10 18 x 8
resonance tube 21X8 22X8   19 x 10  
50cc 21X10 22X10 23 x 8 20X8  
resonance tube 23 x 10 24 x 8   21 x 10  
60cc 22X10 22X12 23 x 10 20 x 10 21 x 8
resonance tube 24X8 24X10   22X8  
75cc 24X8 24X10   22X10  
resonance tube 25X8 26X8   23 x 10  
85cc 26 x 10 25 x12   24X10  
resonance tube 27 x 10 26 x 12   25x10  
106cc 26X10 26X12   24X12  
resonance tube 27X10 28 x 8 28X10 26X10  
120cc 28 x 10 27 x 12   26X10  
resonance tube 28 x 12 29 x 10   26X12  
140cc 28X12 30X10 29 x 10 28X10  
resonance tube 30X12 32X10 29 x 10  
150cc 30 x 12 32 x 10   29X10  
resonance tube 30 x 14 32X12   30 x 10  
200cc 34X10 34X12   30 x 10  
resonance tube 35X10 36X10   32 x 10  
240cc 34X12     32X10  
resonance tube 36X10 36X12   33 x 10  
Four Stroke Glow Engine
Engine Type Standard Prop Applicable Prop
20 - 21 9 x 6 9 x 5 10 x 5    
40 11 x 6 10 x 6 10 x 7 11 x 4 11 x 5
    11 x 6 11 x 7 12 x 4  
45 - 48 11 x 6 10 x 6 10 x 7 11 x 7 12 x 4
    12 x 5 12 x 6    
60 - 65 12 x 6 11 x 7 11 x 8 12 x 8 13 x 5
    13 x 6      
70 12 x 6 11 x 7 11 x 8 12 x 8 13 x 5
    13 x 6      
80 13 x 6 12 x 8 13 x 8 14 x 8 15 x 6
90 14 x 6 12 x 10 13 x 8 14 x 8 15 x 6
108 16 x 6 15 x 8 18 x 5    
120 16 x 6 14 x 8 15 x 6 15 x 8 16 x 8
    17 x 6      
160 16 x 6 15 x 6 15 x 8 16 x 8 18 x 6
    18 x 8 20 x 6    
240 18 x 10 18 x 10 20 x 8 20 x 10  
         
270 20 x 8 18 x 10 20 x 8 20 x 10  
           
300 20 x 10 18 x 12 20 x 10    
           
Two Stroke Glow Engine
Engine Type Standard Prop Applicable Prop
4.9 - 5.1 6 x 4 6 x 3 6 x 4 5.5 x 4 5.5 x 4.5
9 7 x 4 7 x 4 7 x 5    
15 8 x 4 8 x 5 8 x 6 9 x 4  
19 - 25 9 x 4 8 x 5 8 x 6 9 x 5  
29 - 30 9 x 6 9.5 x 6 10 x 5    
40 10 x 6 9 x 8 10 x 7 11 x 5  
46 10 x 7 10 x 6 11 x 5 11 x 6 12 x 4
60 - 61 11 x 7 11 x 8 12 x 6    
70 12 x 6 11 x 8 12 x 8 13 x 6 14 x 4
78 - 80 13 x 6 12 x 8 14 x 4 14 x 5  
90 - 91 14 x 6 13 x 8 15 x 6 16 x 5  
120 16 x 6 16 x 10 18 x 5 18 x 6  
150 18 x 6 18 x 8 20 x 6    
180 18 x 8 18 x 10 20 x 6    
2 Blade 3 Blade 4 Blade
10 x 6 9 x 6 -
11 x 8 10 x 8 10 x 6
12 x 8 11 x 8 11 x 6
12 x 10 11 x 10 11 x 8
13 x 10 12 x 10 12 x 8
14 x 10 13 x 10 13 x 8
14 x 8 13 x 8 13 x 6
15 x 8 14 x 8 14 x 6
15 x 10 14 x 10 14 x 8
16 x 10 15 x 10 15 x 8
18 x 10 16 x 10 16 x 8
20 x 10 18 x 10 18 x 8
22 x 10 20 x 10 20 x 8
25 x 10 23 x 10 23 x 8
26 x 10 24 x 12 24 x 10