How do I get the @$$# right ball ring off a Sturmey-Archer AW Hub?
08-10-15, 12:51 PM
#1
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How do I get the @$$# right ball ring off a Sturmey-Archer AW Hub?
I've been hammering at it for an hour, and all I've done is break a screwdriver and use up half a bottle of penetrating lube. Any hints? The notches are beginning to deform which is why I've stepped back from it.
I've tried using a vice and a pipe wrench and neither can get a good grip. I need to disassemble the hub to replace the axle
I've tried using a vice and a pipe wrench and neither can get a good grip. I need to disassemble the hub to replace the axle
08-10-15, 01:36 PM
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Use a proper punch rather than a screwdriver. Heating the ring may also help. Sturmey-Archer used to make a tool for this, but it's been out of production for several decades. The modern version doesn't work with the older hubs, as it has a semi-circular notch rather than a square notch.
08-10-15, 04:12 PM
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I use a punch I made from 3/8" brass rod. It deforms a bit to fit the notch better and doesn't deform the ring. Either you are turning it the wrong way or you are not applying enough force. Granted I have disassembled a few less than a hundred of these, but have never met one that didn't respond to the right hammer blow. How are you holding the hub while you are pounding?
08-10-15, 05:59 PM
#4
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I've tried it holding it vertically and horizontally, alternating notches, and alternating between medium tapping and heavy blows. It hasn't budged yet. I've tried a variety of punches and screwdrivers
08-10-15, 07:30 PM
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But what are you using to hold it? Your hand, or a bench mounted vise?
08-10-15, 07:55 PM
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I use a punch I made from 3/8" brass rod. It deforms a bit to fit the notch better and doesn't deform the ring. Either you are turning it the wrong way or you are not applying enough force. Granted I have disassembled a few less than a hundred of these, but have never met one that didn't respond to the right hammer blow. How are you holding the hub while you are pounding?
08-10-15, 08:11 PM
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Go to a muffler shop and ask them to go at it with the air hammer and a properly shaped dull chisel. Have them set the tool for light blows, and do any notch for 5-10 seconds, then switch to the next notch. If it doesn't come free after doing each notch twice, repeat with a higher setting.
I've never had one that didn't come off in a few passes at pretty light settings.
I've never had one that didn't come off in a few passes at pretty light settings.
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FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
Last edited by FBinNY; 08-10-15 at 08:16 PM.
08-10-15, 10:55 PM
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Or you can do what I just did to unscrew my SA dyno drum. I had to get out my tools and 1/8" scrap metal and made a hex hole in it. Fits to a few thou. The "nut" is 1 11/32" or 33.5 mm of soft alum. Stupid SA sizing at it's finest. 12" crescent just rounded off one side. Then tried a 36mm headset wrench with a tight fitting shim. Side 2 rounded off. WTF.
I now have a handful of resized wrenches, one was an antique farmer wrench.
I now have a handful of resized wrenches, one was an antique farmer wrench.
08-11-15, 01:46 AM
#9
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Thanks for all the help, I was finally able to get it off.
08-11-15, 04:17 PM
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08-11-15, 07:15 PM
#11
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