> > From: Adam Maas <[EMAIL PROTECTED]> > Oh, and as a further note, my bike uses pretty much the same technology > as those British touring bikes, only real difference is the modern > threadless headset (which isn't really an improvement for road bikes), > the fact I use a track hub threaded for a single-cog freewheel instead > of a Sturmer-Archey 3 speed and the dual-pivot brakes (which are > actually a real improvement). Even the frame is old-fashioned > double-butted 4130 steel built with brazed lugs just like those British > tourers, the only difference is that my frame is Butted, which didn't > really become common until some time in the 60's or 70's. Apart from my > rear wheel(which is 130mm spaced like the current standard, '55 era > would be 120mm), fork, headset and stem, everything on my bike is > interchangable with any non-Raleigh British bike of that era (Raleigh > used nonstandard 26tpi threads on everything instead of british standard > 24tpi threads).
Other way round. BSC (British Standard Cycle)is generally 26tpi, although there were others. Derived from the CEI thread, which had a lot more variation. From the days when engineers designed things to be best at what they were supposed to be doing, rather than easiest to make. BSC http://homepages.tesco.net/~A10bsa/bscgo.htm CEI http://homepages.tesco.net/~A10bsa/ceigo.htm BTW, if anyone needs some funny-sized stainless nuts... http://stigfasteners.easywebstore.co.uk/BS-Cycle-Threads-26-20-TPI_B234V.aspx ----------------------------------------- Email sent from www.virginmedia.com/email Virus-checked using McAfee(R) Software and scanned for spam -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
