Hi,my brushless motor does not start until the throttle is moved halfway.solution please

hi
do esc recalibration with your transmitter....

+1

PS: And take a moment to start new topics in the right boards too.  Moved.

Sorry anwar sir.
I tried to recalibrate by following steps
1) switched on tx with full throttle
2) pluged in the lipo battery
3) moved  the stick slowly back
After this it just keeps beeping.the motor doesnt spin at all until the battery is disconnected and connected again.

few days back i was facing the same kind of problem

you see three wires are coming out of the brush less motor
1. one red one is for +ve
2. black one is for - ve
3 third yellow is for the speed of motor ie throttle

color coding may very but the method is same.

now first two can change the direction of the motor by changing the first two wire

problem arrives when the third wire is not placed at the proper spot in the esc
i think you have to position the third wire correctly may be problem will solve out.

other thing you might help is

check our transmitter throttle settings
read the calibration process of your esc again maybe some step is missing.

Thats not correct, All three wires can be attached to any leads on ESC, there is no +.- or signal as such. Changing  any two connectors changes the direction of spin.

@Kiran you have to disconnect the battery after 3rd step and then reconnect it to get it working. But its different for various esc's so which one you are using might help to determine the procedure.

Anyways a video to help you out.

I was wrong sir +ve , -ve  are there in ordinary motor I forget it.

Please make the following two checks:

1. Not all ESC's have same procedure to calibrate throttle... RTM to see what's the procedure for your ESC brand as correctly suggested by Sachin.

2. You could try plugging into a different channel and try to run the motor. Bear in mind you will need to hold the stick to one side (as the other channels are spring loaded) to initialize the ESC (three beeps or short music). Take off the prop before you do this test. If it works ok with some other channels, and calibration does not work, most likely there is a dead-zone in the transmitter potentiometer.

@wingmanbunty
While the motor side wires do not have any fixed polarity, the polarity switches and that makes the motor spin; But your premise of one negative, one positive and one signal applies correctly on the thin wires that connect to the rx... BlackRedWhite or BrownRedOrange, in that order

Thanks sir I will try that.