Equipment
Park flyers are intended for micro equipment to keep the weight down and still can be fitted in such a little aeroplane.


Electric motor
For maximum thrust you have to use brushless motors. I use a AXi 2212/34 brushless motor and a Typhoon 3/3D. The latest brushless motors are lighter and use 2 and not 3 cells and are almost as powerfull. I personaly like the new motors from SlowFlyWorld the DW6/21-AG (2-cells). This one can produce a thrust from 450 gram by 6,0V. Just take a look at the movie of there plane SlowFlyWorld YAK-54. Unlimited vertical, hovering, etc is no problem anymore. Just keep the weight down of your plane. The weight of my planes are about 290 - 330 gram with the AXI motor and with my Typhoon3/3D about 175 gram.

AXi2212/34 pictures:
 

The AXi is a external rotor brushless motor that doesn't require a gearbox. This means the prop is directly fitted on the motor. For easier mounting the motor in your plane you have to use the radial motor mount from Axi.



With this setup you don't have any rotating parts inside the fuselage. For specifications of the AXi 2212/34 click here.
There are many more different brushless motors from different producers and they can all produce a lot of thrust for your plane. Just look up the specifications and check the internet forums for other peoples opinions.

Or you can make your very own brushless motor just follow the pictures on this Dutch site: Gertjan Kool on a way that we all can understand. Even easier is to rewind a CD-Rom motor. I also started to rewind my own CD-Rom motor.

    

    

There a two different scheme's for rewinding your motor. You can make a choice between Star en Delta. In Delta the motor use more Amps by more RPM's.

    
                                Star                                                              Delta

For better performance you must change the magnets for 5x5x1 N45 magnets.

Speed Controller
The speed controllers are special controllers because the motor is brushless. This means it have to create a rotating field. I have bought a Phoenix 10 from Castle Creations which can handle 10 Amps by only 6.5 grams of weight and is very small.




Receiver
I'm using a Webra 6 channel receiver which weight about 15 gram. It's a bit to much though, a 4 channel would be better because it is lighter.


Servo
The servo's are also micro one's and weight from 3.7 up to 9 gram. You can easily place them with two-sided tape. If you put first a little piece of clear packing tape before the double side tape you can also remove the servo without breaking the Depron. I'm using Hitec HS-55 nano 7.8 gram servo's and Waypoints 3.7 gram servo's.


Battery
I use for battery's LiPoly cells. It is lighter and have much more Amps than ordinary battery's such as NiCad or NiMih battery's. LiPoly cells are more expensive to buy than NiCad or NiMih but they give you much more flying time, less weight and more Amps. The LiPoly cells can't be charged by the standard chargers. They need special charger and you must handle them with care. It is not possible to quick charge them. The maximum charge is the same as there capacity so a minium charging time from a hour or longer. That means when you want to fly the afternoon you need more LiPoly cells or wait a long time on the field.


Conclusion
This way Park Flyers are not cheap and fragile. But with the use of Depron you can build very cheap lots of different type's of airplanes. And you can modify them to your own likings.