Changing of dammaged ball linkage set to RTC 50h03 helicopter

SOURCE: my rc helicopter can not fly it spin in floor

Hi
This type of helicopter uses a fixed pitch blade. Have you recently replaced one or all the blades? If the blades are correctly positioned then once the motor comes to speed, the pitch of the blade creates enough lift to overcome the force of gravity. The problem you're having can only be that the motor is not coming to speed or the blades have been replaced but the pitch is now at the wrong angle.

SOURCE: just bought the helicopter and

hello,,if you have access to a pc,,,simply go to a search bar,,,like google,,,, and type in,,,,,RC DOUBLE HORSE ,,MODEL 9083,,,HAWK,,,,, MANUAL,,,,,, and you just have several answers pop up,,,,, you can either read form it,,or type it and have your own manual,,,,,,,, or contact company and request a manual,,,,but you will have to wait for that,, let me know how you make out,,,,, as i may be able to help you further,,,i have about 9 small r/c helis,,, JOEL

SOURCE: I have a UJ 420 infrared remote control helicopter

Have you checked for any hairs or debri trapp-ed on the rotar shaft
sorry have to ask the silly questions check for voltage at wire terminals
some of the controls have automatic kill switch should they become binded up with something check that rotor is not installed to deeply on the shaft
could also be a short circuit in the remote itself good luck James