Omega Bumper Cal. 28.10 R.A. PC Rotor Play Fix Advice

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Endshake

·Jun 18, 2026

Hello guys.

Do you know how to correct Bumper Play on an old 28.10 R.A pc? Its scratching against the stem.

 

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JimInOz

·Jun 18, 2026·Melbourne Australia

Is the oscillating weight (not rotor) secured correctly to the oscillating weight bearing (the arm gizmo)?
Is there play in the jewel of the pivot for the oscillating weight bearing?

 

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Endshake

·Jun 18, 2026

there is play between the pivot and the oscilating weight

 

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331

Endshake

·Jul 2, 2026

Any ideas? Its running Fine but the Rotor is scratching against the stem. It has noticeable play. Maybe a tap on the bearings?

 

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Archer

·Jul 2, 2026

Endshake

there is play between the pivot and the oscilating weight

If the jewels are not damaged, you need a new axle. 72203301400

 

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331

Endshake

·Jul 2, 2026

Cant find it online unfortunately.

 

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Archer

·Jul 2, 2026

Endshake

Cant find it online unfortunately.

It's discontinued, so you'll have to be persistent...