One Motor Increasing Speed, Others Decelerate

lanlan

New Member
Hi,

I am building my first quadcopter and attempting to get it going using BetaFlight. My components are the following:

BLHeli Makerfire 12A ESC's
EMAX 2204's
Flysky FS-i6 Receiver
Skyline F3 Controller

My problem is that when I increase the throttle using the handheld controller, the RPM will increase uniformly on all motors. RPM will subsequently decrease on Motor 4, while staying the same on Motors 1, 2, and 3.

When I control the motors via the computer and USB, the motors will uniformly rotate according to what I input.

I have calibrated the ESC's, so that should not be the issue. PID controls have not been able to solve the problem. Any help you could give would be appreciated immensely. Thanks in advance

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