I know I promised this update a long time ago. Finally got around to it. This video shows the design changes in the wide ratio hub vs the ball lock type.
Hmm S-RF5(N) is a narrow width of 111 mm and was wondering of its interchangeability
with The other 3 speeds Brompton now gets from S-A..
Diver looks like what is used in the BWR, 9 spline + snap ring groove, so 2 cog half step able ?
same 5 ratios 256% also in 28 hole hubshell ..
havent seen it in distributors stocklists though .. may be Near vapor.. but in OEM truckload quantities..
Another good job from Dan Burkhart productions.
An ounce of diagnosis is worth a pound of cure.
“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin
“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.
Dan, does Sturmey Archer know about these nice videos you make? I'm sure they'd be glad to know.
Hi There- Are the S-A 5-sp bar-end shifters really not compatible with an SA XRF-5 hub that came with trigger shifters? I've been struggling with gear adjustments then saw your video that states these are not cross-compatible. Other forums speak in detail about the amount of cable-pull S-A hubs require etc with no mention of this. I also never saw a hub for sale with bar-ends included or spec'd, but several LBS' carry the bar-end shifter a la carte. Help!
Here is the cable pull over all and increments for the old version.
over all cable pull is 22.2 mm
1st to 2nd -6.8
2nd to 3rd -3.9
3rd to 4th -5.9
4th to 5th -5.6
And here is the wide range.
Over all 20.6
1st to 2nd-7.3
2nd to 3rd-3.6
3rd to 4th-3.6
4th to 5th-6.1
Thanks Dan for the quick response. Actually it is an RXF5 (w), so in theory should work.
That begs the next question -- What's the secret to getting this hub adjusted? I have read numerous threads on this (plus the lame S-A literature) that all make it sound pretty simple, but to no avail. I'm a fair-to-middling amateur, have built this hub into a wheel, have installed and adjusted many derailleurs, and tried repeatedly to get this hub adjusted. A few factors:
- I have done the 'stripped down' nut/cable/indicator configuration (minus the guide or big pulley and cover--see picture) which I've read works fine (true?)
- Based on the S-A literature, I've set the yellow band on the indicator chain flush with the axle end at "2nd gear" (2nd to highest tension based on some threads trying to clarify that ambiguity).
-When I do that then shift to 5th gear (least tension) the cable has less than zero tension -- flopping around. Shifting to 4th on the bar-end does nothing.
- if I set the cable in 5th to have no play but no tension, the cable is taught and maxed out in the 2nd position and 1st (on the shifter) is unavailable.
So I seem to be caught between 'correct' at 2nd and 'correct' at 5th. I have hunted in vain for a compromise sweet spot. any thoughts? do I have a bum hub or shifter? Am I overlooking something stupid? Any insights appreciated.
Setting the colored indicator line at the axle end in second gear is the correct setting, but you must first ensure both hub and shifter are in second gear when checking this setting. Ensure the cable housings are fully seated at both ends, and work the shifter up and down a few times while spinning the cranks.
If you still can't get it to work right, try adjusting it with the shifter in the first gear position so that the indicator can be pulled out just a tiny bit.
Also, when screwing the indicator into the hub, it's important to back it of at least a half turn from the fully screwed in position to prevent binding in the guide nut.
Thanks for the posted video, Dan. I've put about 5000 miles on the XRD5(w) on my commuting bike and like it very much.
bgrantca: I use the bar mounted thumb shifter on mine. I adjust it so 2nd gear is notched in at least tension. In other words, I shift to second, and then nudge the lever back toward 3rd while still indexed. I then adjust the cable so the outside edge of the yellow indicator band is even with the end of the axle.
Any information, no matter how good, will always under-represent reality.
-paraphrasing J a r o n L a n i e r
Do you know anything about problems being reported with the new SA 5 speeds? I believe it was either tcs or Mr. IGH that mentioned it on this site. I've been planning to buy one and that put me off. I have an old S5-2 that works very well for me.
As for other problems, I'm not sure who it was, but I remember somebody taking the planetary sub assembly apart and the hub failed after re assembly.
My guess is that this individual was unaware of the need to phase stepped planetary gears, and as this is meant to be a non serviceable unit, I don't know if it even has timing marks.