i did it as you can see in the pic at the top middle there is an arm button which is lit up as i armed it before taking the pic.. tell me if you want to see the multiwii board after arming

after arming .. the tail motor starts at 75% throttle, the left motor starts at 80-85% throttleand the right motor starts at 90-95% throttle when i trim the throttle to max.. otherwise only the left and the tail motor start at 85% throttle..
what to do

What about ESC calibration?

i had told you about the esc callibration thing.. there is a continuous beep like tetetetetete from the esc connected to ch2 and while the esc connected to ch3 is spinning.. when i bring the right stick to bottom left.. the sound stops and the motor spins as it is..

I think the way you calibrated is wrong.

Actual procedure was(do this for each ESC):
1) connect ESC to throttle channel(normally CH3 For mode 2) and leave all other ESCs Unconnected.
2) turn on transmitter + push throttle to max
3) power up ESC (you can hear just two beeps like tee tee)
4) push throttle to its min(can hear sound teee)
5) you can check motor speed now after that just Disconnect ESC.
Done.

if i dont connect the 2nd esc.. the receiver wont get powered up!!

Do it with the multiwii itself!
https://code.google.com/p/multiwii/wiki/ESCsCalibration

Then connect 2nd ESC to the empty channel( I mean a channel for battery in receiver).

Still it is not powering up...

Might be a faulty Rx?
Did you check the BEC's supply?Even the BEC could be faulty?Try checking the supply from the BEC using a multimeter!

No problem with bec. .my previous escs 10 a were also experiencing the same problem..my receiver needs an external power supply..except of the one esc connected to chx

Which is your receiver ?

 Flysky R6b

You can power it up by connecting a bec to any of its channels, bind port or power port.

If you are trying to calibrate each ESC separately, connect each at a time to throttle channel and calibrate. But calibrating through multiwii is easier than this separate calibration procedure

If you don't know how to calibrate with multiwii or you are having some trouble doing so, I can send you the ESC calibration code. You just have yo load that code on to your multiwii board, connect escs to respective channels and power up, no need of RX and tx

I am not. Using multiwii now..This one is out of bounds..I have ordered kk 5.5 blackboard.. let's see

kk 5.5 is equally hard to set up. You should have just bought a kk 2.1 and saved yourself the trouble.

 

kk2.1 is the best for starting out with multirotors

Even i was of that impression, but since when I owned a CC3D, I never recommended a KK for beginners

thank you guys for all the support
it flew with the i86 board that saikat sir gave me
i would specially like to thank :
SAIKAT sir
himadri roy
sooraj sir
akhilzid sir
sk1701
satya sir
and the others who i forgot to take in
THANK YOU VERY MUCH
and dharmik sir i would soon make a quad out of these motors as the tri flew at approx 70% throttle
anyways thanks again

Great!
Change your caption "When will it fly?" to "It flies now"  
Videos?