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Sep 24th 2015

Know How... 162

Beer Lifting Drone and Interdrone 2015

Beer Lifting Drone and InterDrone 2015
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Category: Help & How To

How to build a beer lifting quad, and Interdrone 2015.

The Beerlifter

Parts List

1. 2 x Diatone 250 Frames (16.99 each... AND they come with the Spacers!) $33.98 

2. 8 x RTFQ 2208 2300KV motors ($61 for 4) $122.00 

3. 8 x RTFQ 20Amp ESCs ($9.00 each) $72.00  

4. 1 x KK 2.1.5 FC $19.00 

5. 1 x 45mm Power Distribution Board $1.99 

6. 2 x XT60 Connectors $1.50 

7. 40 x 2mm Bullet Connectors $10.02 

8. RTFQ 1-17v adjustable Voltage Regulator $0.99 

9. 16/18/20 AWG Silicone Wire $1.39 

10. Heat Shrink Tubing $1.00 

11. Carbon Composit Bullnose Prop (3.24 for 2) $12.69  

Total: $276.56

 

Practical Design Considerations

1. ESCs

We've got 8 x RTFQ 2208 2300KV motors that max out at 295 watts

- We're going to use a 4s (14.8 volt) battery.

- Watts = Volts * Amps - So we'll be using (295/14.8) amps = 19.9 amps 

So we need 20 Amps ESCs (with sustainable bursting to 30 amp, for good measure)

2. Batteries

Again: 8 x RTFQ 2208 2300KV motors that max out at 295 watts

- That means we can pull a maximum of 2,360 watts from the power system.

- A single 2200 4s 60c battery can provide 1953.6 watts. (60c x 2.2 amps = 132 amps // 132 amps * 14.8v = 1953.6)

This means that we can't provide enough power with that single battery to max out our motors.

We COULD go with a larger capacity battery, or a higher discharge rated battery

But I decided to double up on the 4s 2200 60C packs ** That gives us 3,907.2 Watts

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