A big part in this project is choosing the size to build the HK, and also the weight. To figure this out I have been trawling the internet looking for potential motors and batteries that will be suitable. By knowing the thrust of a motor it will allow us to determine the maximum weight that can be supported and then will give us an approximation on how big to built the HK. Also knowing the battery will give us some insight into how long it will be able to sustain flight.

So in my search, I actually came across some great info. It was quite a big learning curve as I never even knew about brushless motors. I was somewhat blown away by their power and efficiency! They are smaller, quieter and more efficient that a normal bushed motor. Excellent! I found one motor which weights 76 grams and can output 1000-1500 grams of thrust. Having two of these would support anything from 2000, to 3000 grams in weight (theoretically). Batteries have also come a long way since I last checked ...

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