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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Help with Studs
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<blockquote data-quote="Howard" data-source="post: 12320" data-attributes="member: 271"><p>Trev</p><p> </p><p>Sorry, I don't keep obscure British standards. I'll have to gain solace in the fact that I'm not the only one who thinks there is a 9/16", 20 TPI, 60 degree cycle thread, I've even found companies in USA, India, Australia, China, Japan and Germany all making them to the wrong angle and all claiming they're made to BS811. To be honest it doesn't matter what BS811 says, companies are selling taps, dies and gauges claiming to be cycle threads that are 60 degrees. These include 3 British tool companies (web addresses below), put their 60 degree taps into a Vin crankcase to suit the 55 degree threaded studs (if that's what they are) and they wouldn't be a tight fit anymore.</p><p> </p><p>H</p><p> </p><p><a href="http://www.coventrygauge.co.uk/pdf%20catalogue/Pages%20from%2010-11otherthread.pdf" target="_blank"><u><span style="font-family: 'Times New Roman'"><span style="font-size: 12px"><span style="color: #800080">http://www.coventrygauge.co.uk/pdf%20catalogue/Pages%20from%2010-11otherthread.pdf</span></span></span></u></a></p><p> </p><p><a href="http://www.tapdie.com/html/bscycle__taps.html" target="_blank"><u><span style="font-family: 'Times New Roman'"><span style="font-size: 12px"><span style="color: #800080">http://www.tapdie.com/html/bscycle__taps.html</span></span></span></u></a></p><p> </p><p><a href="http://www.sizes.com/tools/thread_BSC.htm" target="_blank"><u><span style="font-family: 'Times New Roman'"><span style="font-size: 12px"><span style="color: #800080">http://www.sizes.com/tools/thread_BSC.htm</span></span></span></u></a></p></blockquote><p></p>
[QUOTE="Howard, post: 12320, member: 271"] Trev Sorry, I don't keep obscure British standards. I'll have to gain solace in the fact that I'm not the only one who thinks there is a 9/16", 20 TPI, 60 degree cycle thread, I've even found companies in USA, India, Australia, China, Japan and Germany all making them to the wrong angle and all claiming they're made to BS811. To be honest it doesn't matter what BS811 says, companies are selling taps, dies and gauges claiming to be cycle threads that are 60 degrees. These include 3 British tool companies (web addresses below), put their 60 degree taps into a Vin crankcase to suit the 55 degree threaded studs (if that's what they are) and they wouldn't be a tight fit anymore. H [URL="http://www.coventrygauge.co.uk/pdf%20catalogue/Pages%20from%2010-11otherthread.pdf"][U][FONT=Times New Roman][SIZE=3][COLOR=#800080]http://www.coventrygauge.co.uk/pdf%20catalogue/Pages%20from%2010-11otherthread.pdf[/COLOR][/SIZE][/FONT][/U][/URL] [URL="http://www.tapdie.com/html/bscycle__taps.html"][U][FONT=Times New Roman][SIZE=3][COLOR=#800080]http://www.tapdie.com/html/bscycle__taps.html[/COLOR][/SIZE][/FONT][/U][/URL] [URL="http://www.sizes.com/tools/thread_BSC.htm"][U][FONT=Times New Roman][SIZE=3][COLOR=#800080]http://www.sizes.com/tools/thread_BSC.htm[/COLOR][/SIZE][/FONT][/U][/URL] [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Help with Studs
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