What the thread found

• J-brackets are used to position the camera sled away from the operator's body and improve gimbal comfort during low mode operation.
• An F-bracket designed for use at the top of an arm post can potentially be modified with drilling and pinning to function as an underslung J-bracket alternative.
• F-bracket modifications provide some improvement in low mode positioning but may not fully resolve comfort issues for taller operators.
• When J-brackets are unavailable from the original manufacturer, alternative sources include other arm manufacturers and specialist widget suppliers.
• Post adapters can potentially serve as workarounds when purpose-built J-brackets are unavailable for specific arm models.

Depends on

• The F-bracket modification approach requires custom drilling and pinning work rather than direct installation.
• F-bracket improvements in low mode positioning were described as helping only somewhat, not as a complete solution.
• No definitive statement about whether manufacturers still produce J-brackets for all arm models.
• Discussion involves specific arm models but suitability for other equipment remains unclear.

Gear in this thread

G-70catalog

Parts

Low Mode, Arm Post

Same gear or parts

1. 2026Recommended upgrade priorities for a GPI Pro steadicam rigSteadi-Newbies
2. 2026Lemo connectors on the ARRI Artemis sled: pinout, polarity verification, and powering low-mode monitors and Volt battery.FacebookSteadicam operators group
3. 2026Rocket Arm (elastic band arm) versus traditional spring arms like the G70x: performance, weight, build, and design dispute.DisputedFacebookThe Steadicam Group
4. 2026Rig setup for 180-degree immersive camera operation with Blackmagic URSA Cine Immersive: minimizing rig and monitor visibility in ultra-wide field of view.FacebookThe Steadicam Group