Originally posted by Papadave418
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I'd look at kilowatts as a relative figure. The 8s system at ~110A will push the F-4 to right about its max. Any more power would be wasted exponentially as the model hits a drag wall. We designed the F-4's wing and other aspects for 130mph top speed. If you're going for an efficient 12s setup with perhaps lower blade count and lower amps, then I think there are power system options out there that will be flyable, enjoyable, and practical (CG-able, well wing-loaded). However, if you're going for a 150+mph speed runner, this model likely isn't it.
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