flipping 3 speed making a monkey of me!

[robsa]

Hi fellas, been slowly over the past 5 month tinkering with an old rudge I got of ebay (£20) .
Stripped and re greased the bottom bracket, ok got a mushroom cotter pin but eventually got the sod out. Now, I'm fancying removing the sprocket off the sturmey dyno hub(dated Feb 1950), one its got snaggle teeth and two I live in Derbyshire,which isn't exactly flat so was going to bung a 22 tooth on. So, being the conscientious sort ive done the research.
Pop off a circlip and bobs your uncle.
Off with the wheel (pain in the arse with rod brakes) and hey presto....... No bloody circlip!

Any ideas?
I really don't want to strip it down because as my dad taught me ' if it int brok dunna fix it'
Is there a reliable sturmey mechanic within 20 mile of chesterfield? All the lbs ive been too look at me with fear and loathing as soon as I mention its a Sa hub.
Thanks for any info gang

 

[roadrash]

I think they are held on ,one of two ways , with the clip you already mentioned or screwed on

 

[Tony Raynor]

Think I've seen an exploded view of a stir met hub. I'll see if I can remember where as it was when I was looking for something else

 

[raleighnut]

The older ones are screw on, that was how Sheldon managed to fit a 5 speed block onto the 'how many gears' bike (I seem to remember it was a 60 speed)
5x4x3.

 

[robsa]

Thanks for the replies fellas,
Now I'm going to sound like a total one amp but how do I unscrew the sprocket?

 

[raleighnut]

If you fancy a day trip by train to Leicester then there is a shop about 300 yards from the train station called Bob Warner Cycles, its a one man operation run by a fella called John (only place he's ever worked and he is over pensionable age) I would bet that he would have in stock the replacement or know where to source one and its well worth visiting the shop, it hasn't changed in the past 30 years to my knowledge.
If you need any other bits he has some 'interesting' NOS spares like the pair of aluminium and steel 'wingnuts' for the front wheel that I fitted to one of my bikes, when I asked "how much" he replied "Well they've been in stock for 50 years to my knowledge and I'm fed up stocktaking them every year, take them" But then I have been a customer for over 30 years.

 

[Tony Raynor]

Ok here's a VCC link to there fantastic database of catalogs. Look for the brown brothers catalog. They have e good one for late 30s and early 50s. These catalogs are an absolute must if your trying to identify some vintage parts and have some nice exploded views of SA hubs and other things.

http://veterancycleclublibrary.org.uk/library/index.php?action=asearch&searchtext=B&tpage=5&items=80

Shame there aren't later ones.

 

[robsa]

Thank you for your replies , I was getting a tad disillusioned with the rudge, but knowing you lot are willing to take time out to answer my questions has given me a fresh burst of enthusiasm.