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I seemed to remember that shoving a 30mm axle in a threaded frame was pushing it, and the corresponding bearings becoming too small.
You're not putting the bearings inside the shell, they're in overhanging cups the same as HT2/GXP/UltraTorque, with an 86mm long axle. There's enough room in a 1.37" BSC threaded shell for the cup spigots and the axle.
The thing which doesn't work is trying to put a 68mm long 30mm axle into a 68mm×1.37" shell, because that only leaves a radial clearance between the shell thread ID and the axle OD of <2mm to accommodate the cups and bearings.
gbj_tester
PhilDAS
Ha! I hoped you'ld answer..
There's this though:
So am I correct to understand that the advantage of bsa30 is that the bearings are generic and interchangeable instead of having to change out the whole bb as per GXP?
Interesting. The GXP BBs aren't as cheap and cheerful as the Shimano ones, and changing them out becomes costly over time.
I seemed to remember that shoving a 30mm axle in a threaded frame was pushing it, and the corresponding bearings becoming too small. But if tester says it's fine, then it's fine.
Still dithering though