What the thread found

• Excessive noise from an M1 motor when first used, especially on lighter lenses, is normal behavior rather than a malfunction.
• The M1 uses a brass worm gear meshing with a steel drive gear, and noise levels decrease as the gears wear in through regular use over time.
• A step-down converter cable can be obtained to reduce power delivery to the M1, which lowers motor speed and noise output, but this increases the electrical load on the driver system.
• Most focus systems lack sufficient power capacity to reliably operate an M1 with a step-down converter installed.

Depends on

• The claim about step-down converter cables was presented as incomplete information with uncertainty about compatibility and field performance.
• Advice was based on anecdotal experience with the M1 motor rather than manufacturer specifications.
• The suggestion to simply wait for break-in was not universally confirmed as the sole solution.

Parts

Follow Focus

Same gear or parts

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