What is a BSA bottom bracket?
What is a BSA bottom bracket?
BSA is another way of stating English threading; it comes from British Standard Cycle. English threading on road bikes mean a 68mm wide, 34mm inside diameter shell with reverse threading on the drive side. It’s the most common threaded standard employed today.
What is PF30?
The term PF30 is an early industry name used to distinguish this standard from the previous BB30 (PF42) standard. The frame shell has a smooth bore with an approximately 46mm inside diameter. The shell widths range in width from 68mm to 86mm.
Is BB30 compatible with BSA?
While both standard BSA threaded frames and BB30 frames have 68mm shells for road bikes, the external bearings of the BSA frame when used with an outboard bottom bracket would render a standard BB30 crankset’s spindle too short to use with a BSA30 bottom bracket.
What is BSA in MTB?
English-threaded bottom brackets are known as BSA; it comes from British Standard Cycle. English threading on MTBs means a 73mm wide, 34mm inside diameter shell with reverse threading on the drive side. It’s the most common threaded standard employed today.
What is a BSA bicycle?
BSA motorcycles were made by the Birmingham Small Arms Company Limited (BSA), which was a major British industrial combine, a group of businesses manufacturing military and sporting firearms; bicycles; motorcycles; cars; buses and bodies; steel; iron castings; hand, power, and machine tools; coal cleaning and handling …
Are all PF30 the same?
No they are not the same. But they are also not all that different. 6806 is a number you’ll see describing the bearings used for both pf30 and BB30. This is the bearing category designation.
How wide is PF30 bottom bracket?
The PF30 bottom bracket shell is typically 68mm (road) or 73mm (mtb) wide with an inside diameter of 46mm. The bearings are pressed into cups and the cups then pressed into the frame.
Will BB30 crank fit PF30?
BB30 and PF30 are completely different, from the frame perspective. In other words, a PF30 frame needs a PF30 BB, and a B30 frame needs a BB30 BB. However the cranksets are identical, so a BB30 crankset fits a PF30 BB/frame (this was my CX setup for last season).
What did BSA stand for?
Birmingham Small Arms Company Ltd
Standing for Birmingham Small Arms Company Ltd, BSA was founded in 1861, for the production of firearms.
