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Old 01-25-09, 09:15 AM   #1
lennart72
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open sturmey archer ball case

Hello

I have this wonderful old Raleigh bike I pulled out of a skip a couple of years ago. Now I am trying to open the Sturmey Archer ball case of the hub, and not being very knowledgeable about bikes (yet), I was wondering if you could help me out.

The particular question would be, in order to open the ball case do I have to open the circular ring with the circular recesses and the engraved text (A) or the inner ring with the indents (B). There is an arrow indicating the direction but I am not sure to what element it refers. I have tried gently to tap both with a hammer and screw driver, but so far nothing has moved. Please see the attached image. Any ideas what the correct procedure might be?

Many thanks
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Old 01-25-09, 10:20 AM   #2
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Never done it, but heres how to do it. Rebuilding SA hubs is approaching rocket surgery as far as bike repairs go.

http://www.karrot.org/ascotto/three_speed/index.html
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Old 01-25-09, 01:41 PM   #3
lennart72
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Thanks a lot, San Rensho, for the link! The hub I have is a single speed though, so it is a bit different from the three speed in the link. The three speed has also a different sprocket fixing detail with the circular ring missing.

Hmmm, I keep looking in the net if I can find some info about this particular hub. Perhaps somebody else has some experience with this one?
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Old 01-25-09, 02:58 PM   #4
tatfiend 
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Take a look on the Sturmey Archer Heritage site. They have downloads of some older SA tech/repair manuals which might include the information that you want.

http://www.sturmey-archerheritage.com/history.php
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Old 01-25-09, 03:34 PM   #5
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Quote:
Originally Posted by lennart72 View Post
Hello

I have this wonderful old Raleigh bike I pulled out of a skip a couple of years ago. Now I am trying to open the Sturmey Archer ball case of the hub, and not being very knowledgeable about bikes (yet), I was wondering if you could help me out.

The particular question would be, in order to open the ball case do I have to open the circular ring with the circular recesses and the engraved text (A) or the inner ring with the indents (B). There is an arrow indicating the direction but I am not sure to what element it refers. I have tried gently to tap both with a hammer and screw driver, but so far nothing has moved. Please see the attached image. Any ideas what the correct procedure might be?

Many thanks
This is a single speed freewheel. The cicrular ring marked "A" is actually the cover/outer cone for the freewheel bearing. You can/should just leave it alone. What you need is a freewheel tool to fit the notches (marked "B" in your picture, and the one 180deg opposite) to remove the freewheel as a unit. IIRC the English "Cyclo" (not the French "Cyclo") two-prong tool will fit this. The original tool was pretty rare; the Kingsbridge #100 is a copy you might be able to find more readily.
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