high flyer Posted September 8, 2017 Share Posted September 8, 2017 anyone fly with a HE R90 if so what do you think of the engine ? Quote Link to comment Share on other sites More sharing options...
Monty Posted September 10, 2017 Share Posted September 10, 2017 The only difference I know is reduction gear on R90 is different but same fitting to the motor. As I have r120 and gear reduction is slightly smaller than mine. That's all I know probably not much help. Quote Link to comment Share on other sites More sharing options...
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