Walkera make this awesome little single rotor CP named the V120D02s The thing is well-flying and a beautiful little piece of airframe art.
Some folks love flying LOS. Nothing down on that but I loooove
Here is my basic details about the setup and use of the V120D2s for basic FPV.
I fly the V120D02 in two configurations.
1. TX5805 mounted under the battery tray.
2. TX5805 mounted on TOP of the reciever and a KeyCam 808 #16D under the battery tray.
One of my first test flights with the V120D02 and the KeyCam. sorry about the branch strike.
Read on for build details, 360 shot of the mini-FPV heli and the logic behind this.
At this point you may be wondering "WHY"?
Why fly a mini Heli, we all know that mini heli's are harder to
fly that mini multi-rotors. Right.?
The answer is simple, helicopters are more effective than multi-rotors. The V120D02 use the same 1s 600mah battery as my Walkera SpaceWalker use. but it can lift a 30 gram camera, my spacewalker can only lift a 10 gram camera. The little heli loaded with 30+grams of camera and FPV gear flies about 7-8 minutes on the exact same battery that my SpaceWalker fly 6 minutes with only a 15 gram payload.
The answer is simply that I started flying heli's when i discovered they are so much more efficient than multi-rotors, so that I could fly bigger cameras and better FPV setup while keeping the package small and light. The fully loaded V120 is still only about 100grams.
To fly the V120D02 you need a Walkera radio, personally I use the small Devo6 and a pair of FatSharks to fly FPV with the V120D02 but you can also fly with the Walkera F7 radio which have a build in screen for FPV video.
Entry level, you can add the $60 TX5805 under the battery-tray in about 3
minutes and be flying FPV.
You will need the basic Walkera F4 or F7 to recieve and display the video from the TX5805 unit. OR you can use a Walkera or FatShark goggle with build in video reciever.
Taking this a bit further. I have been adding a SpiroNet antenna to the TX5805 those are about $35 for a set of two. A spironet antenna is circularly polarized, so you need to either put the other in the set on your FatShark or Walkera goggles.. OR you can pop open your F7 radio and put a external antenna plug on it. See my post about modding a F4 radio, the F7 is virtually the same inside.
If you are flying with goggles, you can mount a powerful helical antenna on the goggles and turn your head to keep it "roughly" pointed at the flying helicopter. I find that I can track my V120D02 with a 7turn Helical which give me almost 15db antanna gain, and I have been flying the little helicopter 400-500m away with that setup.
The Heli come with a build in reciever / gyro package and require a Walkera DEVO 6 (or higher)
V120D02s Specs from Walkera's site:
- Current street cost BNF $170
- Main Rotor Diameter: 308 mm
- Tail Rotor Diameter: 85 mm
- Overall Length: 290 mm
- Weight: 100g
- Gyro: 6-axis
- Battery: 3.7V 600mAh Li-Po 20C
- ESC: WK-WST-20A-L
- Brushless Motor: WK-WST-15-001
- Receiver: RX-2636V-D
- Transmitter: DEVO Selectable
The Care & Feeding of a V120 - selection of useful V120 links.
Chat Stout's head-setup tutorial This stuff is required if you want a smooth shake free Heli.