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Old 09-14-19, 09:38 AM
  #21281  
BigChief
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Originally Posted by HPL
After some more research and getting advice and insight from BF members, l have determined the year of my "AW" hub. Although some early S-A hubs were without a date code stamped on them, there are a few from the 40's and 50's that were also sans date codes. My particular hub is clearly stamped with "AW", but no date. This model was made only during WW2, 1941-42, and is identifiable by the left side "ball cup" having a factory black painted finish (ensure that it has factory paint, looks almost anodized), the patina will be obvious. Also, it will have a threaded on drive sprocket, not splined! Apparently, there is another group of hubs from the 50's without a date code, but having a silver finish on left cup with a splined sprocket mount. My hub is on a Raleigh Sports Tourist having a serial number (J26399) interpolated to be from 1930-1933, so it is not original to the frame if the frame is indeed from the 30's. If anyone has a 1941-1942 bike with a similar hub I would be interested to know for further confirmation.

I am also still trying to confirm the year(s) of manufacture for the "DYNOHUB" on the same bike. I have yet to see an example of this front hub. If someone has this hub original to their frame, I again would be interested in order to determine my hub's vintage. My hub has no markings in the center portion where the terminal lugs protrude. Markings appear on the "middle" ring, which appears to have been factory painted silver with a black band incorporating silver print and "diamonds". The main hub "shell" is chrome finish with "32" (spoke count) stamped on the left side.
One terminal lug post is broken. Is this repairable? I have not yet dismantled to determine the viability of repairing the hub.

Thanks again for all the help and advice.
If you go back a page and check out the 1940 catalog page I posted you'll see an image of the Dynohub in the lower left corner. It matches yours exactly. I never noticed the difference before. So all I can say with certainty is that sometime between 1940 and 1951, they redesigned it. I don't know how to deal with the broken pole. You are not supposed to remove the magnet so there's no way to get at it from behind. Maybe it could be drilled and tapped from the front. Splined cogs on AW hubs started around 1952-3. My 51 has a threaded driver. There's a good rebuild video on youtube for Dynohubs.
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