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Old 02-12-2021, 05:28 AM
rgburrill's Avatar
Join Date: Dec 2010
Location: Dallas, Tx CT
Posts: 2,566
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First thing to learn is it's a motor, not an engine. Second thing you got right already, start with the motor. The motor specs should give you three numbers, max voltage, max current and max watts. These numbers are used to select the ESC and battery. The higher the voltage the faster the prop will turn (that's where that 870Kv comes in, 870 RPM per volt)..Incidentally, the higher the voltage, the lower the current which can help in battery cost, and wiring. Third thin is there are several good rc electric motor thrust calculators on the Internet. I use ecalc.ch. It can get confusing but can help in selecting your components. I've seen others on this site comment on it as well - perhaps they will comment here.