Bb30 Crankset In Bsa Frame

Before the introduction of bsa30 there really wasn t an answer to this question.

Bb30 crankset in bsa frame.

There are a number of topics regarding this on weightweenies. Though it is not particularly easy or cost effective. Pf41 frame shell and bearing cup the pf41 press fit standard is available with several bearing inside diameters for various crank spindle systems such as 24mm 28 99mm 30mm and the stepped 22 24mm. Pf42 also known as bb30 bb30a bb30ai bbright direct fit the term pf42 refers to the inside diameter of the shell.

Just to clarify it is technically possible to install a bb30 crankset on a bsa frame. Si crank bolts 14g. C bear new pf42 30 bottom bracket solution to annoying creaking from bb30 bearings directly installed in the frame. C bear pf42 30 instead of pressing bb30.

Bb30 specifically refers to a standard that used 68 or 73mm shells with a 42mm inner diameter meant to press 6806 bearings directly into the frame which had a 30mm internal diameter. If you have above average strength you may reach 40 nm or more. It may or may not be worth it but it looks great and it can be done. This configuration makes for a weight savings of 70g from the previous setup to the integrated chain ring setup.

Turning the bearing cup with the wrench to the point where no more movement possible will give you a torque setting of between 35 38 nm. Dub is compatible with bsa threaded pf86 pf92 bb30 73mm shell and pf30 73mm shell bottom brackets and cranksets are completely interchangeable between the different standards.