What the thread found

• An EFP arm equipped with red springs is rated for a maximum payload of 38 pounds, making it undersized for a fully rigged Arri 435 setup
• A complete Arri 435 configuration including loaded magazine, accessories, follow focus, and matte box can weigh around 22 pounds for the camera package alone, with the entire rig reaching approximately 55 to 63 pounds total
• Despite exceeding the arm's rated capacity, an operator successfully flew a complete Arri 435 rig on an EFP with red springs by carefully managing the weight distribution and using a separate battery belt
• The Arri 435 requires 24 volts of power, necessitating either modification to the steadicam rig's power supply or the use of a separate battery pack worn by the operator or assistant
• A 100% video top is a specialized Arri component that replaces the standard viewfinder with an integrated video assist, features a flat top with mounting holes for dovetail plates, and includes a built-in bracket for motor rods, making it particularly useful for steadicam work in low-mode
• Testing the complete camera configuration at a rental house before the shoot is essential to verify that all components work together and to identify potential issues early
• The Clipper 2 steadicam arm has been successfully used with loaded Arri 435 cameras

Depends on

• The successful flight exceeded the EFP's rated specifications and may not be reliably repeatable across different arms or configurations
• The operator lacked prior film camera experience and relied heavily on rental house support to validate the setup
• Power delivery to the camera was compromised and required a workaround using an external battery belt rather than native rig power
• Variable prime lenses and heavy matte boxes add significant weight that could prevent the configuration from working on an undersized arm
• The discussion does not provide definitive weight measurements for all possible accessory combinations

Parts

Dovetail Plate, Low Mode, Follow Focus

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