Sturmey-Archer R-SRF3
02-10-12, 11:46 AM
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Sturmey-Archer R-SRF3
Just in case anybody's not up to speed on this. It became available in 2011.
The std Sturmey pull chain arrangement has been replaced in this model by a rotary cam (Sturmey patent, 1970!), with the shift actuation inside the dropouts. The shift cable is simple to attach/remove with no unthreading/readjusting of anything and no loose parts when disconnected. The R-SRF3 has a solid axle not weakened by any internal passageways or cut outs, and the axle nut threads are 3/8" like Shimano rather than 13/32" like other S.A. hubs. Otherwise, it continues with Sturmey goodness: the beautiful polished hub shell, NIG, comes in the box with all the nuts, washers, cable, shifter, cog, etc you need to put it in service, &etc. The cable pull requirements to shift the R-SRF3 are greater than the classic AW family of hubs, and it uses a different (factory) shifter. Mine came with a dual paddle 'push-push' (RapidFire style) straight bar shifter. 130mm OLD to make room for the rotary gear select.
The std Sturmey pull chain arrangement has been replaced in this model by a rotary cam (Sturmey patent, 1970!), with the shift actuation inside the dropouts. The shift cable is simple to attach/remove with no unthreading/readjusting of anything and no loose parts when disconnected. The R-SRF3 has a solid axle not weakened by any internal passageways or cut outs, and the axle nut threads are 3/8" like Shimano rather than 13/32" like other S.A. hubs. Otherwise, it continues with Sturmey goodness: the beautiful polished hub shell, NIG, comes in the box with all the nuts, washers, cable, shifter, cog, etc you need to put it in service, &etc. The cable pull requirements to shift the R-SRF3 are greater than the classic AW family of hubs, and it uses a different (factory) shifter. Mine came with a dual paddle 'push-push' (RapidFire style) straight bar shifter. 130mm OLD to make room for the rotary gear select.
02-10-12, 12:07 PM
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Cool!
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Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
02-10-12, 12:14 PM
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Just in case anybody's not up to speed on this. It became available in 2011.
The std Sturmey pull chain arrangement has been replaced in this model by a rotary cam (Sturmey patent, 1970!), with the shift actuation inside the dropouts. The shift cable is simple to attach/remove with no unthreading/readjusting of anything and no loose parts when disconnected. The R-SRF3 has a solid axle not weakened by any internal passageways or cut outs, and the axle nut threads are 3/8" like Shimano rather than 13/32" like other S.A. hubs. Otherwise, it continues with Sturmey goodness: the beautiful polished hub shell, NIG, comes in the box with all the nuts, washers, cable, shifter, cog, etc you need to put it in service, &etc. The cable pull requirements to shift the R-SRF3 are greater than the classic AW family of hubs, and it uses a different (factory) shifter. Mine came with a dual paddle 'push-push' (RapidFire style) straight bar shifter. 130mm OLD to make room for the rotary gear select.
The std Sturmey pull chain arrangement has been replaced in this model by a rotary cam (Sturmey patent, 1970!), with the shift actuation inside the dropouts. The shift cable is simple to attach/remove with no unthreading/readjusting of anything and no loose parts when disconnected. The R-SRF3 has a solid axle not weakened by any internal passageways or cut outs, and the axle nut threads are 3/8" like Shimano rather than 13/32" like other S.A. hubs. Otherwise, it continues with Sturmey goodness: the beautiful polished hub shell, NIG, comes in the box with all the nuts, washers, cable, shifter, cog, etc you need to put it in service, &etc. The cable pull requirements to shift the R-SRF3 are greater than the classic AW family of hubs, and it uses a different (factory) shifter. Mine came with a dual paddle 'push-push' (RapidFire style) straight bar shifter. 130mm OLD to make room for the rotary gear select.
02-10-12, 04:36 PM
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As much as I love the classic AW and its modern derivatives, this is probably better. As long as they keep making the classic stuff for people like me with narrow rear ends on our frames, I'll be happy.
02-10-12, 04:38 PM
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Oh, yeah, the AW/SRF3/etc chain pull hubs are all still in production. This hub is just something in addition.
Good idea!
Good idea!
02-11-12, 01:18 PM
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Just in case anybody's not up to speed on this. It became available in 2011.
The std Sturmey pull chain arrangement has been replaced in this model by a rotary cam (Sturmey patent, 1970!), with the shift actuation inside the dropouts. The shift cable is simple to attach/remove with no unthreading/readjusting of anything and no loose parts when disconnected. The R-SRF3 has a solid axle not weakened by any internal passageways or cut outs, and the axle nut threads are 3/8" like Shimano rather than 13/32" like other S.A. hubs. Otherwise, it continues with Sturmey goodness: the beautiful polished hub shell, NIG, comes in the box with all the nuts, washers, cable, shifter, cog, etc you need to put it in service, &etc. The cable pull requirements to shift the R-SRF3 are greater than the classic AW family of hubs, and it uses a different (factory) shifter. Mine came with a dual paddle 'push-push' (RapidFire style) straight bar shifter. 130mm OLD to make room for the rotary gear select.
The std Sturmey pull chain arrangement has been replaced in this model by a rotary cam (Sturmey patent, 1970!), with the shift actuation inside the dropouts. The shift cable is simple to attach/remove with no unthreading/readjusting of anything and no loose parts when disconnected. The R-SRF3 has a solid axle not weakened by any internal passageways or cut outs, and the axle nut threads are 3/8" like Shimano rather than 13/32" like other S.A. hubs. Otherwise, it continues with Sturmey goodness: the beautiful polished hub shell, NIG, comes in the box with all the nuts, washers, cable, shifter, cog, etc you need to put it in service, &etc. The cable pull requirements to shift the R-SRF3 are greater than the classic AW family of hubs, and it uses a different (factory) shifter. Mine came with a dual paddle 'push-push' (RapidFire style) straight bar shifter. 130mm OLD to make room for the rotary gear select.
https://www.sturmey-archer.com/userfi...2005-04-27.pdf
It was not included with my hub, but I found it wasn't that hard to align the rotary mechanism without it.
02-11-12, 02:14 PM
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Symmetrical and Asymmetrical dish, I can live with...
What I have noticed as the biggest improvement with IGH hubs - especially the last few I've worked on:
Flange Thickness
Which makes for a much "snugger" fit between the flange and the elbow of current spokes.
=8-)
What I have noticed as the biggest improvement with IGH hubs - especially the last few I've worked on:
Flange Thickness
Which makes for a much "snugger" fit between the flange and the elbow of current spokes.
=8-)
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5000+ wheels built since 1984...
Disclaimer:
1. I do not claim to be an expert in bicycle mechanics despite my experience.
2. I like anyone will comment in other areas.
3. I do not own the preexisting concepts of DISH and ERD.
4. I will provide information as I always have to others that I believe will help them protect themselves from unscrupulous mechanics.
5. My all time favorite book is:
Kahane, Howard. Logic and Contemporary Rhetoric: The Use of Reason in Everyday Life
5000+ wheels built since 1984...
Disclaimer:
1. I do not claim to be an expert in bicycle mechanics despite my experience.
2. I like anyone will comment in other areas.
3. I do not own the preexisting concepts of DISH and ERD.
4. I will provide information as I always have to others that I believe will help them protect themselves from unscrupulous mechanics.
5. My all time favorite book is:
Kahane, Howard. Logic and Contemporary Rhetoric: The Use of Reason in Everyday Life
02-11-12, 07:30 PM
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