before you go out and spend a whole bunch of money on batteries or motors is that 645 the largest prop you have tried? I would try a x646,447, 448, 648 first. What esc are you using?
The Q sport hydro in my avatar runs on a 1527 1.5d 1500kv on 5s2p with a x457 prop and it screams just had to turn a bigger prop, its very competitive in racing.
The Q sport hydro in my avatar runs on a 1527 1.5d 1500kv on 5s2p with a x457 prop and it screams just had to turn a bigger prop, its very competitive in racing.
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