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 Post subject: vintage thread question
PostPosted: Tue Feb 05, 2013 3:42 pm 
Gold Trader
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Location: Manchester, UK
Does anyone happen to know what thread size the centre bolt & nut on an early 1980s Sturmey-Archer sidepull brake is - deep drop chromed ones as found on roadsters, Bombers etc?

I'd like to replace the original nyloc nuts with new stainless one, but having tried and failed with 6mm, 1/4" BSW, 1/4" UNF and 1/4" BSC I'm stumped. I'm aware that Raleigh had their own proprietary thread sizes, is this another one? Or is it BSF?

FWIW, the same thread size is to be found on the cable barrel adjusters - I just can't ID it as I don't have a thread pitch gauge


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PostPosted: Thu Feb 07, 2013 10:43 pm 
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Location: Chained to the mash tun.
Dead Rats wrote:
Does anyone happen to know what thread size the centre bolt & nut on an early 1980s Sturmey-Archer sidepull brake is - deep drop chromed ones as found on roadsters, Bombers etc?

I'd like to replace the original nyloc nuts with new stainless one, but having tried and failed with 6mm, 1/4" BSW, 1/4" UNF and 1/4" BSC I'm stumped. I'm aware that Raleigh had their own proprietary thread sizes, is this another one? Or is it BSF?

FWIW, the same thread size is to be found on the cable barrel adjusters - I just can't ID it as I don't have a thread pitch gauge


Have you spoken to Derek at The Old Bike Trader yet? He helped you with a dynohub didnt he?

Karl


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PostPosted: Fri Feb 15, 2013 5:09 pm 
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He did, thanks for the reminder!


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