Specifications
26.3.4. Motor surges with governor mode
If you are using a ramped throttle curve (0-50-85-85-85) or V-shaped throttle curve
(100-90-80-90-100) with a main motor ESC in governor mode, then the motor will be unable to
maintain a constant RPM and the headspeed will "surge".
You must use a horizontal throttle curve such as 90-90-90-90-90 in order for the governor
mode to work properly.
26.4. Swashplate problems
26.4.1. Cyclic servos wiggle around when motor is running
This is probably caused by radio interference. See Section 26.5, “Glitching”.
26.4.2. eCCPM swashplate does not move correctly.
Either the collective pitch works properly but the cyclic doesn't, or vice versa.
The collective pitch servo movement is configured using servo reversing, but the cyclic swash-
plate movement is configured using swashplate mixing.
For more information, see Chapter 13, Helicopter and Transmitter Setup.
26.5. Glitching
• Check your component placement to ensure electrically noisy components are placed away
from eletrically sensitive components.
See also Section 11.2, “Component placement” for more info.
• Check your wire routing to ensure wires to/from eletrically noisy components are placed
away from wires to/from eletrically sensitive components. See section 11.3 Wire routing for
more info.
See also Section 11.3, “Wire routing” for more info.
• Replace the receiver crystal if it has been in a crash. Receiver crystals are fragile devices
which can be easily damaged.
• Check for bad bearings. Bad bearings will generate electrical interference. See section
30.8.9 Ball bearings for more info.
See also Section 30.10.9, “Ball bearings” for more info.
• Connect a wire from the metal or CF tail boom to the battery negative lead. The tail belt can
generate static electricity as it slaps the inside of the tail boom.
• Connect a wire from the metal frame to the negative battery lead. The frame can generate
an electrical charge in some cases.
• Wrap the ESC receiver wire through a ferrite ring several times to reduce ESC interference.
• Try wrapping the receiver in aluminum foil temporarily. If the glitching stops, then the re-
ceiver is too close to an electrically noisy component.
• If using a brushed motor, check the brushes and commutator. Worn brushes and/or a dirty
commutator can increase electrical noise generated by the motor.
Troubleshooting Common Problems
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