[Closed] Shimano Alfine 8 proper borked

IIRC the only spares you can get are the main bearings or a complete new cluster. Just get a new cluster and put it in the hub

this is not well organised but all the info is there
https://hubstripping.wordpress.com/

Pics might help. I had one in which the roller clutch carrier disintegrated. The rest of the hub is ok though if you want any spares - or if your roller clutch is ok I'll have it off you 😀

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I have mine in bits at home; I'll try to remember to take a few photos to see what it ought to look like.

I had one in which the roller clutch carrier disintegrated.

Which bit is the roller clutch?

Edit: ah sorry, didn't realise you had already replied! 🙂

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I have mine in bits at home; I'll try to remember to take a few photos to see what it ought to look like.

That would be amazing! Thanks!!! 🙂

This is the roller clutch, and is very much what mine looks like!

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It looks like there is a ton of stuff at SJS- it's all marked as Nexus but it seems like it will fit Alfine 8 too

https://www.sjscycles.co.uk/shimano-hub-gear-spares/?groupset=nexus&geoc=US

Not all nexus and alfine stuff is compatible IIRC - are there not two different clutch versions? Basically the same tho

Yours does look different to what the internals normally look like. Wonder if you've somehow pulled out the splined connection which normally stays inside the hub shell? Usually this is what it looks like when you pull it apart.
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I think the bit I've scribbled in yellow should be in the shell rather than pulled out.

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Thanks for that Mowgli! I found your old thread too when I was googling for Alfine info (very useful!):

http://singletrackmag.com/forum/topic/alfine-8-failure-help-please

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I'm struggling to match up the two images- it looks like it [i]might[/i] be the same part that has failed, but mine looks different because there is a plastic cover on it? Does that sound about right?

I think we are posting at the same time! Yep, I think you are right- the internals absolutely refused to budge at first so they got a load of wacks with a hammer, then they fell out really easily lol 🙂

I reckon yes, your roller clutch has failed, but in doing so has jammed itself between the internals and the outer part, so you've inadvertently pulled out the splined part which ought to remain in shell.

I think your initial diagnosis is correct - it's borked. Bummer.

I am pretty sure when I stripped mine that there was nothing left in the shell

all the shimano exploded diagrammes are available on the net http://si.shimano.com/#/

I've just levered that bit off and the roller clutch fell out like confetti lol

SJS are saying they have the part for £130. Rose bikes sell a whole new SG-S7000 (the new top normal 8 speed) for £170. Hmmm...

https://www.sjscycles.co.uk/hub-spares/shimano-nexus-sg8r35-ring-gear-unit-36w-9802/?geoc=US

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If you're considering upgrading to Di2 there's a SG-S705 for sale in the classifieds.

<cough> <blatant plug>

Good to know! 🙂

To be honest, now I have a rough idea of how long they last (about 5 years or 15-20,000 miles) I'm still deciding whether I want another. I may have been expecting too much but I was hoping it would last longer! 🙂

Mine has lasted longer than that and is now in service on the ebike. did you ever service it? annual oil dip and they last forever

Nope! 🙂

Had a 32-16 drivetrain too lol 🙂

The only ones I know that have failed have not been servied. It takes about 40 mins to do

I was put off the idea of an oil dip when I saw reports on the interwebs of oil leaking out on to the disc brake rotor...

Its not an issue. You drain off the excess and anyway any leaks are the drive side