What the thread found

• The locking clamp design has been used successfully since the Model 1 Steadicam and remains standard on current systems.
• A safety locking screw positioned on the right side toward the back of the topstage serves as a mechanical stop to prevent the mounting plate from sliding even if the main lock fails.
• Testing the safety mechanism can be done by inserting the dovetail plate into the topstage without locking it, tightening only the safety screw, and tilting the sled up and down to verify the stop points are present.
• The safety screw is a standard hardware store component that can be replaced if needed.
• Experienced operators report the same concern during drop time checks but find reassurance in understanding the safety system.

Depends on

• The discussion assumes the safety locking screw is present and correctly installed.
• Advice applies to the Steadicam EFP model and similar rigs with this locking mechanism.
• The testing procedure described is performed without a camera attached.

Parts

Dovetail Plate, Top Stage

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