The tables below give dimensions for threaded bottom-bracket shells and parts which thread into them. An explanation for all these bb types is just below the chart. We currently make bottom brackets and adaptors for bsa, bb30, and pf30 frames and are working on bb86 bottom brackets. British and italian-threaded bottom-bracket cups are easily available; french ones less so, though still in production as of 2015. When the threads of an english bottom bracket get stripped, it can usually be be reamed and re-threaded italian.
Threaded bicycle bottom bracket
English thread 68mm bottom bracket. The osbb is basically the same as bb30 but with a little tighter tolerances and a 0. [our] hollowgram sisl2 crank with spidering weighs 484g. President and ceo chris cocalis (cocalis holds the same position with pivot cycles, whose frames are built around the more mountain bike-friendly pf92 format). And to real cycling enthusiasts, there is nothing more gratifying then achieving the ultimate ride. It consists of the driveside assembly, which includes the crank arm, spider, spindle, and chainrings, and the non-drive side crank arm. Even if they were manufactured perfectly, they change shape when heated during brazing. Can be taken apart, cleaned, greased, reassembled, and adjusted.
Generally a raleigh with a bottom bracket wider than 70mm has 26 tpi and a narrower one is 24 tpi. As it stands, this new standard may just become the hot the new thing among smaller manufacturers of metal bikes.