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what's wrong with my alfine 11?

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what's wrong with my alfine 11?

Old 01-31-13, 08:11 AM
  #1  
emaayan
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what's wrong with my alfine 11?

hi..

i know there might have problems with alfine 11 before, i'm just not sure mine are the same.

my configuration is of trek 7.7 fx, with an alfine 11 and a 39 front chainring.

for some reason after a pedaling the alfine would go out of shift as it were, meaning i could see the yellow dots are not aligned, i would aligned them again, but after a while of shifting they would go out of sync again.

i should note that in regular conditions this bike have ecospeed's 1300 watt engine, it is currently running without one.

i chose the alfine 11 becouse it's the only one that had thumb shifters.
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Old 01-31-13, 08:30 AM
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Dan Burkhart 
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First thing to rule out is factors external to the hub. Is the cable routed properly around the cassette joint spool? If it's not properly seated in the groove, it will never shift properly. Check that the cable housing is firmly seated in the stops and there are no tight bends.Also ensure the cable is free running both ways inside the housing.
The Alfine 11 is one gearhub I have had no direct experience with, but I have read of a few negative experiences with them.
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Old 01-31-13, 10:45 AM
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+1, you can do something about the cable slipping and such.

not much about the internals of the hub.. so fix what your ability allows..

Ill try to not point out the Rohloff advantages.
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Old 01-31-13, 10:48 AM
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pierce
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11 indexed gears in less than an inch of total cable travel doesn't leave ANY room for mechanical slop. the cable and sheath have to be /perfect/ for this to work well.
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Old 01-31-13, 10:55 AM
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Since the position of the shift dots are not controlled by the hub, but by the shifter and cable, the problem is likely not inside the hub.

First make sure the cable is free running, that all the cable housing segments are seated int heir stops, and that the cableis properly routed around its groove in the cassette joint, then do a series of cycles from gear 1 -> 11 ->1 and see if it changes.

Also - does it always change in the same direction? If so it might just be the cable slipping through an imporperly assembled or tightened cable nut.
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Old 01-31-13, 01:09 PM
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The shifting constantly going out of adjustment sounds like either excess cable friction or something moving; either a loose clamp as suggested above or an improperly-prepared cable housing end creeping into its socket or ferrule. Long shot; cable wire fraying inside the shifter.
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Old 01-31-13, 01:17 PM
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Di2 for those is in the works , prototypes in bike shows, now.
11 indexed gears in less than an inch of total cable travel doesn't leave ANY room for mechanical slop.
that gives me a good reason Why they bothered.
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Old 01-31-13, 01:32 PM
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Originally Posted by fietsbob View Post
Di2 for those is in the works , prototypes in bike shows, now.


that gives me a good reason Why they bothered.
I'm not overly exited about electronic shifting, but I think this is as good an application for it as any.
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