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Sturmey Archer RS-RF3 3/32” sprocket compatibility?

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Sturmey Archer RS-RF3 3/32” sprocket compatibility?

Old 09-16-23, 05:41 PM
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Sturmey Archer RS-RF3 3/32” sprocket compatibility?

I wonder if I can pair the Sturmey Archer's RS-RF3 (3 speeds) internal gear-hub with a 3/32” sproket.

Its part-list document only lists these 1/8" sprockets parts
  • HSL827 Sprocket 17T, 1/8" Deep Dished (Chrome)
  • HSL924 Sprocket 18T, 1/8" Deep Dished (Chrome)
  • HSL965 Sprocket 19T, 1/8" Deep Dished (Chrome)
and included with the RS-RF3 kit there is a 1/8" Dished 17T Sprocket.

Sturmey Arche also has 3/32" sprockects parts for a similar internal gear hub (e.g. the rx-rk5, a 5 speeds hub)
  • HSL201 Sprocket 19T, 3/32” Dished
  • HSL202 Sprocket 20T, 3/32” Dished
They look similar, but I can't understand if they can be used with the rs-rf3.

If not, is there any third party company that makes 3/32" sprocket for the RS-RF3?
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Old 09-17-23, 05:35 PM
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Look carefully at photos of the parts and sizes if the ID spline patterns look similar.

Confirming a "no fit" is usually easier than knowing it will fit, but if you can't rule it out, buy one from a seller with a friendly return policy.

Otherwise, if you can't raise the bridge, lower the water. Consider running a 1/8" chain on your 3/32" chainrings.
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Old 09-17-23, 06:10 PM
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OP - see the extensive answer on your duplicate post.
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