What the thread found

• Two small Phillips head screws inside the Junction Box secure the bayonet piece to the Junction Box and should be checked for tightness.
• Four long lead screws connecting the Donkey Box should be verified as tight, as these are critical for stability.
• Set screws for side-to-side and fore/aft adjustments on the DB2 can cause unwanted movement if not properly tightened, potentially allowing the top of the unit to shift around.
• Play can develop in the round connector piece between the bayonet and Junction Box even when the securing screws are at maximum tightness, with the play becoming more noticeable under camera weight.
• Stripped threads on the securing screws may cause them to loosen repeatedly and fail to eliminate play.

Depends on

• Discussion involves Pro2 Junction Box and Pro2 Donkey Box from a specific manufacturer.
• No definitive solution was confirmed in the thread; suspected causes include stripped threads or manufacturing tolerances in the connector piece.
• The exact mechanism causing persistent play despite tight screws remains unresolved.

Parts

Donkey Box

Same gear or parts

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3. 2022Static balance loss in PRO Cinema HD sled after tilting: junction box flex and component tolerance stack-up.FacebookThe Steadicam Group
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