Rosewhite based plywood frame

[rcflyrodeo]

Hi,

I'd like to present my latest quadro. The idea was to build a cheap, yet compact and light quadro trainer with gyros & accels only. Inspired by the carbon Rosewhite frame
I designed a similar construction made of 3mm 5 layered plywood with a 48cm axle to axle ws. The arms are constructed of double sandwiched CNC milled plywood reinforced
vertically with a thin piece of plywood and press-glued together as in the picture. The result is impressive, the arms are slightly elastic yet impossible to brake by folding in hand.

[rcflyrodeo]

As the arms have now 6mm thickness I figured out that the central plates should be sandwiched to this distance in which 8 x 5mm Leds fit in perfectly with the laser cut plexyglas inlets and still enough place for a pcb which serves for:

- power connection of the ESCs and Lipo
- Mosfet driver for the LED inlets connected to the LEVEL signal
- Mosfet driver for the LED stripes on the arms connected to the Battery warning signal

[rcflyrodeo]

I used a simple Viacopter flight controller from Jussi, where I sligthly modified the pcb to have access to the LEVEL and battery warn signals. The flight controller was mounted on a 0.9mm thick fiberglass plate with the necessary vibration dampers.
I used a Futaba R617 6 channel receiver which I placed above the flight controller to have the shortest possible wire connection

[rcflyrodeo]

Here's it separately

[rcflyrodeo]

The assembled frame with the Hobbywing Flyfun 12amp ESCs and the 2212-13 1000kv engines, 10x45 EPP props and 2200 3s Lipo
I mounted the cover of the spray used for the paint job to protect the flight controller.
The landing gear is made of 50mm hex nylon bolts M4 threaded and screwed to the frame, it is very rigid.
The whole weighs 600grs without the battery, 800 grs with the battery.
The raw wooden frame weighs 160grs
The reduced wingspan reported to the used engine/prop combination results a machine with very aggressive flight characteristics due to the high nick/roll rate,
therefore I had to reduce the P value to 2.6 to be less responsive.

[rcflyrodeo]

One more close shot from the wiring, and the indoor maiden:


http://www.youtube.com/watch?v=yoDVORrmvtg

[jevermeister]

NICE!!!

Want one!

[LenzGr]

Good job, nicely done! A very clean and simple setup.

[rcflyrodeo]

NICE!!!

Want one!

If you want one I could offer u a frame set. I actually ordered 2 central PCBs so I have left one, got some plexiglas inlets too, all I had to do is to order and CNC cut the wooden parts.