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2021From a Facebook group: The Steadicam Group

Achieving greater lens height for tall performers: arm post length and vest-mounted swivel options with 5/8-inch pins.

What the thread found

  • Arm posts longer than approximately 12 inches with 5/8-inch pins are considered unsafe.
  • A GPI PRO Arm combined with a mid-arm swivel from another manufacturer can safely add approximately 14 inches of height, totaling roughly 26 inches additional height above standard configuration.
  • Arm posts are available directly from the rig manufacturer.
  • An 8-inch post combined with a fully extended bottom stage lowers the gimbal to accommodate most scenarios with tall performers without requiring extended posts.
  • Vests with height-adjustable front mounts, such as Exovest, xSPINE, and Klassen models, allow the arm connection point to be raised simply by repositioning on the vest.

Depends on

  • Performer height and shot requirements.
  • Rig configuration and arm type.
  • Vest design and adjustment range.

Parts

Arm Post

Same gear or parts

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  4. 2025Removing the post tensioner from an NB-Arm to replicate PRO-Arm feel for operators switching models.FacebookThe Steadicam Group
Original thread on Facebook (group members only)Ask about this threadThe answer cites the archive