Model Engine Company of America

Please note this is just a guide. The best prop for your particular model and engine combination will be determined by you.

PROP CHART FOR 2 stroke AERO ENGINES
Engine Size Break-in size Normal Flying  
.049 - .061 6x3 6x4  
.09 7x3 6x5 - 7x4  
.12 7x4 7x4 - 8x3  
.15 8x3 7x5 - 8x4 - 9x3  
.19 - .21- .25 9x5 9x5 - 10x4  
.28 .32 10x5 10x5 - 10x6  
.35 10x6 10x6 - 10x7  
.40 10x6 10x6 - 10x7 - 11x4  
.45 - .46 -.47 10x6 - 10x7 11x5 - 11x6  
.48 11x6 11x6 - 11x7 - 12x5 - 13x5  
.61 - .65 11x7 11x7 - 11x8 - 12x6 - 13x5  
.76 - .80 12x7 12x7 - 12x8 - 13x6 - 14x5  
.91 12x8 12x8 - 13x6 - 14x6  
1.00 13x7 13x7 - 13x8 - 14x7 - 15x6  
1.20 14x7 14x7 - 14x8 - 15x7 - 16x6  

 

PROP CHART FOR 4stroke AERO ENGINES
Engine Size Break-in size Normal Flying  
HP VT .21& .25 8x5 8x5 - 9x4 - 9x3  
HP VT .49 10x6 - 11x4 10x6 - 11x5 - 12x4  
The above information is provided as a guide. Since MECOA/K&B has no way of determining the ability of the individual using and understanding this information, we assume absolutely NO RESPONSIBILITY for any damage to person or property from the use of this information.
 

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