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PostPosted: Tue Jun 14, 2011 3:01 pm 
Newbie

Joined: Tue Feb 02, 2010 7:51 pm
Posts: 5
Hi all,

I cannot find instructions on how to remove the sprocket. It is not held on by a circlip as per the AG instructions, it is threaded on in some way, so must be an earlier model.

Can anyone help? How do I remove this sprocket? I'm getting the hub rebuilt onto a different rim.

Thanks in advance.


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PostPosted: Tue Jun 14, 2011 5:37 pm 
Old School Grand Master
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Joined: Wed Feb 20, 2008 12:21 pm
Posts: 5785
Location: Lost in Translation
Assuming you're talking about an early Sturmey-Archer rear hub with a dynamo and a threaded driver, you need to remove the driver from the hub to remove the sprocket. The driver with sprocket attached will sit astride a suitable bar, and the sprocket can be removed from the driver with a chain whip.

http://www.sheldonbrown.com/gloss_ta-o. ... readdriver


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PostPosted: Tue Jun 14, 2011 6:31 pm 
Retro Guru

Joined: Sun Aug 22, 2010 7:07 pm
Posts: 1324
Location: Cotswolds
Just drop the driver out, no need to risk removing sprocket. Rebuild the wheel then replace the driver with spocket still on.


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PostPosted: Tue Jun 21, 2011 12:59 pm 
Newbie

Joined: Tue Feb 02, 2010 7:51 pm
Posts: 5
Many thanks, does dropping the driver out involve the dismantling of the dyno hub side too ? I've heard that the dyno side of the hub needs careful handling?


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PostPosted: Tue Jun 21, 2011 1:10 pm 
Retro Guru

Joined: Sun Aug 22, 2010 7:07 pm
Posts: 1324
Location: Cotswolds
Just undo the lock nut, tabbed washer and cone on the sprocket side, there is a weak spring behind the driver (the part the sprocket screws on to). The ring of loose 3/16 balls above the driver should be retained under their removable tin plate, but with wear may drop out.

I had a magnet keeper 50 years ago, and found that the magnetism was not lost if the keeper was not used, although many disagree.


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