Yet Another Cycling Forum

General Category => Freewheeling => Tandems => Topic started by: Goldcrank on July 10, 2018, 09:36:58 pm

Title: Shimano Alfine kaput
Post by: Goldcrank on July 10, 2018, 09:36:58 pm
Riding home, the rear hub gear of my tandem gave a funny click (crunch) and then would not change gear out of fourth.

The indicator doesn’t seem to be facing the same way as it was and I have no idea how to fix it... any clues? If you live in E17 you could come and look, stroke your chin, tut and drink tea. 
Title: Re: Shimano Alfine kaput
Post by: LittleWheelsandBig on July 10, 2018, 09:40:06 pm
8 or 11?
Title: Re: Shimano Alfine kaput
Post by: Goldcrank on July 10, 2018, 09:43:49 pm
8
Title: Re: Shimano Alfine kaput
Post by: Tim Hall on July 10, 2018, 10:01:06 pm
Removing the guts from the shell is fairly straightforward and should let you see what has busted.  Dismantling beyond that is beyond my experience though.

I didnt think  the Alfine was rated for tandem use though.
Title: Re: Shimano Alfine kaput
Post by: Ham on July 10, 2018, 10:01:52 pm
Nearby E17, with some experience of 8 speed alfine, but no time until the weekend.

4th is the direct drive ratio, so that's probably the extent of my chin stroking right there and then
Title: Re: Shimano Alfine kaput
Post by: Bolt on July 10, 2018, 10:09:29 pm
Is the handlebar shifter physically stuck in 4th gear?  If so see if you can pull the cable out from the long arm on the cassette joint then give it a good pull to see if the mechanism at the hub is free to move.  If so the fault is likely to be with the shifter or the cable run into it.
Title: Re: Shimano Alfine kaput
Post by: Goldcrank on July 10, 2018, 10:20:03 pm
It’s strange. It’s like the cable has gone slack.  But, it doesn’t seem to be broken.
Title: Re: Shimano Alfine kaput
Post by: Goldcrank on July 10, 2018, 10:21:08 pm
The shifter clicks up and down the gears but changes nothing. 
Title: Re: Shimano Alfine kaput
Post by: Ham on July 11, 2018, 09:43:09 am
The shifter clicks up and down the gears but changes nothing.

What happens with the yellow line in the window?
Title: Re: Shimano Alfine kaput
Post by: andyoxon on July 11, 2018, 10:15:03 am
There's this 'alfine 4th gear stuck', on the other side...
https://www.cyclechat.net/threads/alfine-8-internal-hub-gear-shifting-problem.227894/
Title: Re: Shimano Alfine kaput
Post by: Goldcrank on July 16, 2018, 09:05:37 am
It turns out that I had broken the lockring - it's made of plastic with a metal washer attached...

Mamachari in Walthamstow were great and had a hunt through the spares box to find one for me.

They know their stuff when it comes s to hubgears.