Hi everyone,
I’m looking for help diagnosing a persistent vibration issue on my GEPRC CineLog 35 V3. I’ve been troubleshooting this for about a month and would appreciate an engineering-based approach rather than random tuning suggestions.
Build
-
GEPRC CineLog 35 V3
-
SpeedyBee F405 AIO
-
Bluejay ESC (48 kHz)
-
DSHOT300 + Bidirectional DSHOT + RPM Filtering
-
EMAX ECO II 2004 3000KV
-
DJI O4 Pro
-
Radiomaster RP3 ELRS
-
M10 GPS
-
4S LiPo
-
Betaflight 2025.12.5 (clean flash)
Current Symptoms
-
High-frequency vibration during hover.
-
More noticeable at low throttle and landing.
-
Improves slightly with throttle.
-
The whole quad vibrates, not just the camera.
What I’ve Already Done
-
Fresh Betaflight flash with full chip erase.
-
Fresh Bluejay flash.
-
Configured everything from scratch.
-
Verified board alignment (Roll 180°, Props Out).
-
RPM filtering enabled.
-
Replaced a faulty M1 motor (the original motor twitched and ran ~10°C hotter than the others).
-
Installed brand-new Hurricane 3.5" props.
-
Checked FC soft mounting, wiring, motor screws, prop clearance, ducts, etc.
-
Verified ESC configuration and motor direction.
-
Blackbox logging enabled.
Current Status
The new motor and props have improved the vibration, but it is still present during hover and low throttle. All four motors now finish the flight at similar temperatures.
I have Blackbox logs available and can upload them. Before I start changing PIDs or filters, I’d like to understand whether this looks like:
-
Frame/duct resonance
-
Camera mount resonance
-
Remaining mechanical vibration
-
Something visible in the Blackbox that I’ve missed
I’m trying to avoid masking the problem with tuning and would rather identify the root cause first.
Any advice from people experienced with CineLog builds, ducted cinewhoops, or Blackbox analysis would be greatly appreciated.