Bb30 Crankset In Bsa Frame

Though it is not particularly easy or cost effective.

Bb30 crankset in bsa frame.

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. Recommended torque is in the range of 35 nm to 45 nm. C bear pf42 30 instead of pressing bb30. First s t30 bottom bracket bsa adapter comes with its own special wrench.

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. 121mm bb30 spindle 91g. 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. Si crank bolts 14g.

C bear new pf42 30 bottom bracket solution to annoying creaking from bb30 bearings directly installed in the frame. This configuration makes for a weight savings of 70g from the previous setup to the integrated chain ring setup. If you have above average strength you may reach 40 nm or more. Just to clarify it is technically possible to install a bb30 crankset on a bsa frame.

Before the introduction of bsa30 there really wasn t an answer to this question. There are a number of topics regarding this on weightweenies.