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Alfine 11 hub skipping under hard pedaling



 
 
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  #1  
Old September 26th 17, 02:22 PM posted to rec.bicycles.tech
dstamat[_3_]
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Posts: 4
Default Alfine 11 hub skipping under hard pedaling

Dear All,

The Alfine 11 SG-S700 hub of my commuting bicycle has started to skip when I pedal standing up. Mostly around the middle of the range (5, 6 and 7). I hear a very loud noise and I have to stop pedaling. It does not happen when pedaling seated. When in 6 gear the two small yellow lines are aligned so I guess it is not because of bad adjustment.


I have had this bike for ~5 years but it has only been ridden for ~1000 mi. The oil of the hub has not been changed yet.

Any ideas?

Thanks in advance

Dimitris
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  #2  
Old September 26th 17, 03:15 PM posted to rec.bicycles.tech
AMuzi
external usenet poster
 
Posts: 9,030
Default Alfine 11 hub skipping under hard pedaling

On 9/26/2017 8:22 AM, dstamat wrote:
Dear All,

The Alfine 11 SG-S700 hub of my commuting bicycle has started to skip when I pedal standing up. Mostly around the middle of the range (5, 6 and 7). I hear a very loud noise and I have to stop pedaling. It does not happen when pedaling seated. When in 6 gear the two small yellow lines are aligned so I guess it is not because of bad adjustment.


I have had this bike for ~5 years but it has only been ridden for ~1000 mi. The oil of the hub has not been changed yet.

Any ideas?



#1 problem is bent/rusted/damaged control cable so check
that first. If the wire is kinked, your initial adjustment
(line up dots) will be off in other gear selections.

If that all looks good and your chain is not obviously
worn/damaged you may have internal wear for which the only
replacement part is complete internal assembly. Quick to
change, not cheap.

If this bike has seen much salt water use, it will look like
this inside:
http://www.yellowjersey.org/photosfr...t/nx7brokn.jpg
http://www.yellowjersey.org/failnx16.jpg
http://www.yellowjersey.org/photosfr...t/alf8rust.jpg

If on opening there are not obvious rust/crud/broken small
gear bits then, cleaning and oiling makes sense. We grease
ends and bearing assemblies well and fill with 90W gear oil
as we do SA and SRAM gearboxes. The 'permanent' lubrication
so popular now doesn't seem to slow water penetration across
the seals very well. Note King and Parliamentthis is not
recommended by the manufacturer, YMMV.


--
Andrew Muzi
www.yellowjersey.org/
Open every day since 1 April, 1971


  #3  
Old September 26th 17, 07:15 PM posted to rec.bicycles.tech
Frank Krygowski[_4_]
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Posts: 5,394
Default Alfine 11 hub skipping under hard pedaling

On 9/26/2017 10:15 AM, AMuzi wrote:
We grease ends and bearing
assemblies well and fill with 90W gear oil as we do SA and SRAM
gearboxes.


Are you including old classic Sturmey-Archer AW hubs in the above? I
always thought "light" or low viscosity oil was recommended for them.

Lately I've been using a few drops of automatic transmission oil every
few weeks. That's because I bought a quart a few years ago for another
application, and have enough left to will to my great-grandchildren. So
I use it to refill my pinpoint lubricator.

I suspect none of this is critical as long as the insides are moist, but
I thought I'd ask.

--
- Frank Krygowski
  #4  
Old September 27th 17, 08:20 AM posted to rec.bicycles.tech
dave[_3_]
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Posts: 25
Default Alfine 11 hub skipping under hard pedaling

On Tue, 26 Sep 2017 06:22:31 -0700, dstamat wrote:

Dear All,

The Alfine 11 SG-S700 hub of my commuting bicycle has started to skip
when I pedal standing up. Mostly around the middle of the range (5, 6
and 7). I hear a very loud noise and I have to stop pedaling. It does
not happen when pedaling seated. When in 6 gear the two small yellow
lines are aligned so I guess it is not because of bad adjustment.


I have had this bike for ~5 years but it has only been ridden for ~1000
mi. The oil of the hub has not been changed yet.



Change the oil. Which will be very dirty by now probably as the parts
wear in together leaving some small metallic particles.

Run for a while then change again.

Failing this strip down clean out the inside and re-grease the bearings.


Handy pics.
https://www.flickr.com/photos/915638...57640605430014

Remove all children or those easily offended from the working area.
Gather up as many swear words in your memory as you can and thoroughly
prepare to use them all in a constant stream of profanity whilst
refitting the circlip (ping****it) that holds the cog on.

As for oil. Shimano oil is holy **** expensive and also unavailable in
Turkey where I am. Any yellow metal safe manual transmission fluid should
do. NOT GL5 as the sulphur content is corrosive to yellow metals, of
which there are quite a few contained in the hub. GL4 should be fine but
may be difficult to find. ATF is not quite viscous enough and caused
skipping on mine.

Good luck.
--
davethedave
  #5  
Old September 27th 17, 09:11 AM posted to rec.bicycles.tech
Dennis Davis[_2_]
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Posts: 24
Default Alfine 11 hub skipping under hard pedaling

In article , dave wrote:

....

Remove all children or those easily offended from the working
area. Gather up as many swear words in your memory as you can
and thoroughly prepare to use them all in a constant stream of
profanity whilst refitting the circlip (ping****it) that holds the
cog on.


I have no real knowledge of these matters. But it might be possible
to remove/refit the circlip with the wheel/hub inside a large,
transparent plastic bag. With as small an opening as possible for
your hands. Might help prevent the errant circlip disappearing off
at light speed to join the Cassini probe in its demise on the planet
Saturn.
--
Dennis Davis
  #6  
Old September 27th 17, 03:09 PM posted to rec.bicycles.tech
[email protected]
external usenet poster
 
Posts: 3,346
Default Alfine 11 hub skipping under hard pedaling

On Wednesday, September 27, 2017 at 1:11:51 AM UTC-7, Dennis Davis wrote:
In article , dave wrote:

...

Remove all children or those easily offended from the working
area. Gather up as many swear words in your memory as you can
and thoroughly prepare to use them all in a constant stream of
profanity whilst refitting the circlip (ping****it) that holds the
cog on.


I have no real knowledge of these matters. But it might be possible
to remove/refit the circlip with the wheel/hub inside a large,
transparent plastic bag. With as small an opening as possible for
your hands. Might help prevent the errant circlip disappearing off
at light speed to join the Cassini probe in its demise on the planet
Saturn.
--
Dennis Davis


OK - three points. Or a 92 on a wine tasting scale.
  #7  
Old November 10th 17, 02:50 PM posted to rec.bicycles.tech
[email protected]
external usenet poster
 
Posts: 2
Default Alfine 11 hub skipping under hard pedaling

Dear All,

Thank you for your comments and advice. I investigated a little more and I have isolated the skipping to the 8th gear. It only happens after pedaling for a while so it is hard to replicate on a stand. Now, every time it happens, I change the adjustment a little and experiment with the frequency of the skips.

Also, as you suggested, I need to change the oil. The Shimano or Rohloff oils are ridiculously expensive, so I have found this alternative at a reasonable price:

Liqui Moly 1401 GL4 SAE 80 W Transmission Oil

For about $10 per quart it will allow me to rinse the hub more than once and more change the oil. What do you think?

Many thanks again

Dimitris

https://www.amazon.de/gp/product/B004FPQYW4/



On Tuesday, September 26, 2017 at 3:22:34 PM UTC+2, dstamat wrote:
Dear All,

The Alfine 11 SG-S700 hub of my commuting bicycle has started to skip when I pedal standing up. Mostly around the middle of the range (5, 6 and 7). I hear a very loud noise and I have to stop pedaling. It does not happen when pedaling seated. When in 6 gear the two small yellow lines are aligned so I guess it is not because of bad adjustment.


I have had this bike for ~5 years but it has only been ridden for ~1000 mi. The oil of the hub has not been changed yet.

Any ideas?

Thanks in advance

Dimitris


  #8  
Old November 10th 17, 03:10 PM posted to rec.bicycles.tech
[email protected]
external usenet poster
 
Posts: 2
Default Alfine 11 hub skipping under hard pedaling

Dear All,

Thank you for your comments and advice. I investigated a little more and I have isolated the skipping to the 8th gear. It only happens after pedaling for a while so it is hard to replicate on a stand. Now, every time it happens, I change the adjustment a little and experiment with the frequency of the skips.

Also, as you suggested, I need to change the oil. The Shimano or Rohloff oils are ridiculously expensive, so I have found this alternative at a reasonable price:

Liqui Moly 1401 GL4 SAE 80 W Transmission Oil

For about $10 per quart it will allow me to rinse the hub more than once and change the oil more often. What do you think? Is this oil appropriate?

Many thanks again

Dimitris

https://www.amazon.de/gp/product/B004FPQYW4/

On Tuesday, September 26, 2017 at 3:22:34 PM UTC+2, dstamat wrote:
Dear All,

The Alfine 11 SG-S700 hub of my commuting bicycle has started to skip when I pedal standing up. Mostly around the middle of the range (5, 6 and 7). I hear a very loud noise and I have to stop pedaling. It does not happen when pedaling seated. When in 6 gear the two small yellow lines are aligned so I guess it is not because of bad adjustment.


I have had this bike for ~5 years but it has only been ridden for ~1000 mi. The oil of the hub has not been changed yet.

Any ideas?

Thanks in advance

Dimitris


  #9  
Old November 10th 17, 03:17 PM posted to rec.bicycles.tech
dstamat[_3_]
external usenet poster
 
Posts: 4
Default Alfine 11 hub skipping under hard pedaling

Dear All,

Thank you for your comments and advice. I investigated a little more and I have isolated the skipping to the 8th gear. It only happens after pedaling for a while so it is hard to replicate on a stand. Now, every time it happens, I change the adjustment a little and experiment with the frequency of the skips.

Also, as you suggested, I need to change the oil. The Shimano or Rohloff oils are ridiculously expensive, so I have found this alternative at a reasonable price:

Liqui Moly 1401 GL4 SAE 80 W Transmission Oil

For about $10 per quart it will allow me to rinse the hub more than once and change the oil more often. What do you think?

Many thanks again

Dimitris

https://www.amazon.de/gp/product/B004FPQYW4/

On Tuesday, September 26, 2017 at 3:22:34 PM UTC+2, dstamat wrote:
Dear All,

The Alfine 11 SG-S700 hub of my commuting bicycle has started to skip when I pedal standing up. Mostly around the middle of the range (5, 6 and 7). I hear a very loud noise and I have to stop pedaling. It does not happen when pedaling seated. When in 6 gear the two small yellow lines are aligned so I guess it is not because of bad adjustment.


I have had this bike for ~5 years but it has only been ridden for ~1000 mi. The oil of the hub has not been changed yet.

Any ideas?

Thanks in advance

Dimitris


 




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