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Old 06-27-2014, 11:22 AM   #1
rajkojus
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Default weight distribution/aerodynamics problem ? help !!!

Greetings !

Im new to this forum and overall rc world,

First of all, i wish to thank anyone who replies to my 1st thread ever. Im not even sure if this topic belongs here or maybe it got mentioned earlier or in some other thread, so forgive me if thats the case. My english is not very good either.
To make my story short:
I Have no experience in rc flying whatsoever, but i got interested in rc airplanes 3 months ago when i decided to build one from scratch. I have/had no basic aerodynamics/rc airplane knowledge, but i decided to try.

First of all, i managed to make 3d model of desired airplane (p47) in google sketchup, then i printed out, glued on balsa, and cut out the profiles and parts which then i again glued together to get the basic structure.
Of course before i merged it all togehter, i have installed ESC, battery, servos etc. My brother is electrical engineer so he helped alot about electronics.( i will write specifications later)

In the end it turned out to be nice looking wooden airplane !!!
BUT... it wont fly Thats why im here. Ill post pics of plane with its specifications, so you could help hopefully help me.
Apparently, it gets enough speed and acceleration, but it wont get off the ground, OR it keeps steering to the left and gets its nose rammed in the soil.

I know that i was not supposed to try to make this complicated plane since i am a beginner, and i will probably crash it even if it gets to fly.

Specifications : (most of these are chinese manufactured, ordered from china)

-2700 kv brushless motor,
-3x 9g servos - 1 for aelerons, 1 for rudder, 1 for elevator
-13cm/5.11in propeller
-30A ESC
-1500mah, wild scorpion, li-poly battery
-transmitter FST6 by flysky

Airplane mass : 360g / 12.6oz

If you need any other kind of photos of info, feel free to ask !! Thanks !


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