- Model engine classes
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In the world of model aircraft there are several competition classes to signify engine displacement.
Class Cubic Inches Cubic Centimeters 1/2A 0.000 - 0.050 0.000 - 0.819 A 0.051 - 0.1525 0.835 - 2.499 B 0.1526 - 0.300 2.500 - 4.916 C 0.301 - 0.650 4.932 - 10.65 FAI max 0.1526 max 2.5 Jet Categories:- Model engines
- Sports stubs
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