Disclaimer: beware I'm a beginner myself and created this out of necessity but I CAN have it wrong so recheck before you commit yourself to these numbers!!!
Yes there is ecalc, but getting started if really hard if you have absolutely no inclination of where to start. This calculator works when you have chosen a frame! It calculates the max diameter of props you can add to it (basic geometry, but slightly annoying to calculate). Secondly, based on manufacturers suggestions I noticed a linearity between prop diameter and KV for motors. Hence if you know the frame, you can calculate the max diameter for the props and from there you can pick the generally suggested KV for the motor. Obviously you can deviate from these calcs (although I would not suggest to go for bigger diameter props if your frame does not allow it ;-D) especially if you require a lot of thrust for a heavy payload you'll need to go low in the KV.
In the end, when you've selected all the components make sure you cram them in ecalc to get more exact number. This tool is really just intended as a rough guideline for beginners so you know where to get started!!
Here's the tool:
http://bit.ly/1gmDQ3E
feedback, suggestions are most welcome!!
Yes there is ecalc, but getting started if really hard if you have absolutely no inclination of where to start. This calculator works when you have chosen a frame! It calculates the max diameter of props you can add to it (basic geometry, but slightly annoying to calculate). Secondly, based on manufacturers suggestions I noticed a linearity between prop diameter and KV for motors. Hence if you know the frame, you can calculate the max diameter for the props and from there you can pick the generally suggested KV for the motor. Obviously you can deviate from these calcs (although I would not suggest to go for bigger diameter props if your frame does not allow it ;-D) especially if you require a lot of thrust for a heavy payload you'll need to go low in the KV.
In the end, when you've selected all the components make sure you cram them in ecalc to get more exact number. This tool is really just intended as a rough guideline for beginners so you know where to get started!!
Here's the tool:
http://bit.ly/1gmDQ3E
feedback, suggestions are most welcome!!
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