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Improving drop time on a steadicam EFP sled by raising the center of gravity

18 years old. Gear and prices may have changed since.

What the thread found

  • Drop time performance on a steadicam depends on how weight is distributed vertically, not just total payload weight.
  • Raising the center of gravity by positioning weights higher on the sled improves drop time characteristics.
  • A weight cage constructed from two weight plates connected by vertical legs raises the center of gravity more effectively than a single weight plate mounted directly to the top stage.
  • The ideal center of gravity position is approximately four to five inches above the top stage level.
  • Alternative methods to raise weight include attaching weights to a camera handle using a low mode bracket, wrapping diver's ankle weights around the camera body, or having a machinist fabricate a custom weight cage.
  • Mounting heavy weights on a small camera handle introduces practical risks including handle flex, slippage, and potential damage from over-tightening the clamp.

Depends on

  • This discussion involves an EFP sled with a 12-26 pound payload capacity and a very light camera setup around 2 pounds.
  • Custom weight cage fabrication by a local machinist was proposed but specific sourcing for struts and threading was left unresolved.
  • The effectiveness of alternative weight mounting methods depends on camera design and handle robustness, which varies by model.
  • No definitive measurements or testing results were provided to quantify drop time improvements from different weight distribution approaches.

Parts

Top Stage, Low Mode

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