All Forums  Classic, Historic & Post Classic Motorcycling  General Comments  Plunger Thread

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Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Message: * HTML is OFF * Forum Code is ON Smilies [quote][i]Originally posted by Foghorn[/i] [br]Ok! I'll play BSA's silly game. Who can tell me what thread is used on the B31 (1951) plunger carrier tube- the one that the top plug screws into? Mine is 0.861"OD and 20 TPI. If I accept that it is 7/8" OD nominal, what thread system has 20 TPI for 7/8" diameter? Where can I buy borrow or hire a die nut and tap for such an one? It is almost metric 2.5 pitch, but there is no 22 mm thread in the metric system. 3/4" BSC (cycle) can be 20 TPI, but I have not seen it in 7/8". All advice (and abuse) greatfully accepted. Foghorn [/quote] Check here to include your profile signature. Check here to subscribe to this topic.