what is a bec and why do i need it,cause i can see thru the shrinkrap and the white wire isn't even hooked up but the black and red are

I do see that the white wire's disconnected. I'll have you return the ESC/BEC unit to me and I'll replace it upon return.

John
Nitro Planes

That is correct for the separate UBEC... It is not providing any signal or control like the "old" Verson 1 did for the ESC. It is just power...

This UBEC is a separate item that just takes the voltage directly from the battery (red and black on the deans plug) and provides voltage to your RX.. It can be plugged into an open servo slot or even the battery slot if you use a different RX.

If that wire was connected or can even touch something in the UBEC, THEN you have a problem.

The V2 electronics have an ESC that has it's own throttle lead that needs to be plugged into the RX throttle slot for the signal.

Now, weather it works or not is another question...

Edited to add:

BEC = Battery Elimination Circuit
UBEC = Ultimate BEC (generally means switching type circuit for 4S Lipo or bigger)
ESC = Electronic Speed Control

Right!

But the question is how is the ESC wired?

If the ESC has it's own lead to the RX, then there is no problem with that disconnected wire, other than you do not want it in contact with anything.
( merely tape the end and you are done. )

The uBec doesn't need it's own TX signal, rahter it provides power TO the RX, so the white lead is useless and should be disconnected.

Now that said the uBec might be wired "in line" ( if it connects to the throttle channel ) in which case it should be connected.

Well, in the Red Viper V2 that I had it was a separate UBEC.

The photo shows the connections from the battery directly to the UBEC. The ESC was a completely separate item.

The first photo is where I swapped out the plug with a real Deans Connector. The second photo shows the secondary wire routing...

I've decided not to mess with plane anymore.I'm going to roll the dice and buy another one ,it couldnt happen 2 times in a row

Why not fix the Bec if that is all that is wrong with the plane?

Or better yet, just tape the end of the white wire and test the plane.

You may find nothing wrong... not that there is anything wrong with TWO FA/18's

ok i'll try that.but the plane is already crash and it never left the ground. But that mite be cheeper to buy new wings than the whole plane

Ah, ok, didn't know it had crashed.

Im done with this plane ,now i decide to give it a few more test and i .reved up the motor a few times just messing with it and the spinner came off and broke all the blades off the fan. this plane was doomed when it left the factory. Heck when i first pulled it out of the box i noticed a stress crack on the body below the cockpit, so i stuck an orange sticker over it ,that was no big deel though.
This plane wasnt ready to fly ,it was ready to fail.