Gentlemen, start your engines!
It’s a race between Germany and Hong Kong!
The flight electronics for the Bormatec have now been ordered from HK-based stockists, Hobbyking.
2x 4000 mAh, 14.8 volt, 4S1P (4 series, 1 parallel) Lithium-Polymer cells, for main power.
An NTM Prop Drive Series 42-38 brushless motor, rated at 750kv*
Along with a 70 Amp ESC and the servos required to operate the aircraft.
Oh, and a LiPo charger. ‘Cos I was lacking one.
The combination of these, using one battery at a time (for better at-the-field testing times), should allow flight times of approximately half an hour. For propeller choice, I have gone for a scale-ish 3-bladed unit from Master Airscrew; 12 x 6 inch.
Running cost at this point, is now c. £350, including the original Arduino electronics and sensor modules. Significantly less, it’s worth noting, than any comparable equipment you could buy… Let’s say a comfortable factor of 10. At the minimum.
And now the waiting begins…
* KV in the sense of brushless RC motors, means RPM per Volt. (so max RPM 11,100)