Impulse RC ApexLR EVO 7" FPV Frame KitAs prop size increases, the longer arms required cause vibration issues which negatively impact flight performance and video stability. The ApexLR EVO uses a unique tension brace design between the arms to increase stiffness and shift the resonant frequency of the assembly. Pre loading the arms in this way allows us to keep vibration to a manageable level while still using 5. 5mm thick arms for a 7" prop. Our approach saves 20g in carbon weight alone