2024From a Facebook group: Arri Artemis Trinity
High-frequency vibrations on ARRI Trinity at steep downward tilt and roll/post rotation: top support point solutions and motor tuning.
What the thread found
- The ARRI TAB-1 top support is considered impractical due to space conflicts with motors and top plates; operators report a wooden wedge as the upper support point is more effective against high-frequency vibrations than the manufacturer's metal top-points.
- Some operators also use a Noga arm for top support, while others fly without a top mount altogether without problems.
- Vibration sources include missing upper support point, excessive motor power (lowering P-value sometimes helps), loose roll belt, or resonance between the gimbal head and a flexing bottom stage—the latter issue is only resolved by extending the post.
- ARRI Superpost configurations can amplify the resonance problem.
- After factory service, one operator reported that factory presets are usually sufficient, requiring only motor power adjustment rather than individual PID value changes.
- Roll belt tension should only be adjusted after consultation with the service center, as over-tightening or skipped belt teeth require factory repair.
Depends on
- Success depends on camera weight, payload distribution, and exact motor tuning.
- Bottom stage flex is specific to post length and gimbal configuration.
- Post extensions are required to address head-to-stage resonance.