This sould be a simple question to most ppl.
Can a electric motor stall going full power on take off
If the answer is yes how and why

What happened was i was going down the runway with my f-14 55mm ducked fan motor plane and it had enough power to get off the ground. As it climbed to about 12' it all of a sudden went from nose up climb to a sudden nose down dive, wet i had it full throttle

It's unlikely that the motor "stalled". Other causes such as the speed control are better possible causes.
If it really did "stall", I'd expect to find a hot motor and/or burnt smell.
Such things as a poor or intermittent connection, are likely causes.
A loss of throttle control signal from the receiver can cause the speed control to shut down the motor.
If the speed control has a built in BEC, a weak battery under full load may have shut down the BEC and speed control.
In some cases, a built in BEC may not have the current capability to drive the servos.
We had this happen with a 3A built in BEC driving six miniature servos. All of a sudden, control was lost on everything but
the two aileron servos. At least the other servos and throttle reverted to fail safe conditions, and the plane was saved using only the ailerons.
An external BEC was added, and the problem never re-occurred.

Since this is a ducted fan, also look for mechanical causes, such as stiff or sticking bearings, or scrape marks in the housing to blade areas.
High RPM motors don't have as much torque as a lower KV motor of the same power.

Is it possible that you stalled your plane and not the motor? I am not trying to be a smart a.... but that is what a plane does when it stalls...The motor could still be at full power if you were too nose high and too slow.. I know nothing about ducted fan or electric....

nitro208ca

By stall, do you mean the motor quit running, even at full throttle?

I suspect it was more of a problem of to much elevator angle on the climb out, and the plane just quit flying.... stalled.

CGr.

Many of the better ESC's have a thermal protection circuit that will shut off the motor current if the ESC gets too hot.

Also if your running your packs too close to their limits, the LiPo cutout may kick in before you expect it to causing the same symptom.

With EDF's I find newbies tend to grossly under estimate the power requirements.

To me it sounds like the ESC either burned out or hit the termal limit.

Iguess i will not be flying the jet any more. it is a bananahobby product. All the reports that i have heard about them, and the two aircrafts that i got from them i have had nothing but problems</p>

A lot of the Chinese planes use poorly spec'd electronics.

You can safely upgrade them however...

e.g. a higher capacity ESC may be all you need.


I've seen some Asian vendors reverse this trend.

I picked up a Dynam "Peaks" biplane at the Toledo show.

It's a 3lb foamy AUW plane.

It came with a 1000 watt motor ( yes that figure is right! ) and a 50A continuous 80A burst @ 14.8v ESC.

That's FAR more power than the plane will draw or use.... giving the owner ample electrical overhead.... just as things should be.

Drawing only 500watts on the stock prop, the plane was still a vertical rocket at full power...

So there is some hope that the Asian vendors MAY be coming around... over spec'ing their electronics and components will get their products reviewed more favorably.