Hey guys,
Love the H-quad idea - we built one, 1m x 1m in size, to be flown with the APM 2.5+.
Now our problem is the power to take off. It's way heavier than we'd hoped, comes in to 1.3 kg about. This is with APM 2.5, GPS, receiver, 2x 3S 1500mAh batteries in parallel and the power system we pulled off a DJI F350 ARF kit (920kv motors, 18A ESCs, 8x4.5 2-bladed props).
We tried taking off, and even at full power, it couldn't. So here's our question: how do you choose a prop/motor combo (and battery choice) to lift your multi-copter? Is it trial and error, or are there formulas we can use as a guideline?
We're not averse to buying new motor/props/batteries, but if we can reuse the motors we'd like to. We have 9x6 props already, but I don't have a clue whether that will give sufficient lift, or what it will do to power consumption.
Any help appreciated in the matter!
Love the H-quad idea - we built one, 1m x 1m in size, to be flown with the APM 2.5+.
Now our problem is the power to take off. It's way heavier than we'd hoped, comes in to 1.3 kg about. This is with APM 2.5, GPS, receiver, 2x 3S 1500mAh batteries in parallel and the power system we pulled off a DJI F350 ARF kit (920kv motors, 18A ESCs, 8x4.5 2-bladed props).
We tried taking off, and even at full power, it couldn't. So here's our question: how do you choose a prop/motor combo (and battery choice) to lift your multi-copter? Is it trial and error, or are there formulas we can use as a guideline?
We're not averse to buying new motor/props/batteries, but if we can reuse the motors we'd like to. We have 9x6 props already, but I don't have a clue whether that will give sufficient lift, or what it will do to power consumption.
Any help appreciated in the matter!