What I am running at the moment is the x445 on fdm trans with 9xl on 2x5s temps are all low my top speed has been at 43 to 44 mph but with the 2x 5s take off has been lagging most likely due to the weight. I was thinking of trying an m645 which is the same dia as the x445 but has a higher pitch has anyone tried the m645 with any luck?
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