Gents.
I had one motor that was not spinning very well, I pulled that motor out from its housing found some tiny grains of dirt under the motor. Blew everything out, put the motor back in checked free spinning prop, all a-ok. Take it out for a flight now it tilts very badly on TO, makes a high pitched whining noise and tends to drift a bit in gps mode. once up it seems to fly ok. any ideas please!
I had one motor that was not spinning very well, I pulled that motor out from its housing found some tiny grains of dirt under the motor. Blew everything out, put the motor back in checked free spinning prop, all a-ok. Take it out for a flight now it tilts very badly on TO, makes a high pitched whining noise and tends to drift a bit in gps mode. once up it seems to fly ok. any ideas please!
