Originally Posted by
globecanvas
I don't quite understand how those things work. It looks like it is a metal shell that holds the BB30 bearings outside the frame rather than inside? Doesn't that add ~20mm to the BB width? How can the existing crank spindle be long enough? Obviously some lack of knowledge on my part.
N
No. It replaces standard PF30 BBs, which are nylon or metal sleeves that simply press into the frame. They can move around, though, which can cause creaking.
The TorqTite and similar models thread together. You basically bolt each half to an interior sleeve. Once on, no movement, no sound.