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My comment stands :-)*
Not in love with square taper at all, and there are several ways to go external BB on a track bike. I know world champions still use square taper so it must be OK, but the sheer feeling of solidity from the bigger axle is surprising, and nice.

I was about to pull you up on that too. The campy chainset is one of the best IMO, But yeah, only when compared to other square tapers. In cycling terms I'm a bit of a pleb. But even I can notice the difference in stiffness. Is it less noticable on the track?

possibly the narrow q-factor has something to do with it.

The Campy chainset has the lowest Q-factor I know of. But I struggle to see why externals cant have the same. Either way you need your heel to miss both the chainstay, which is irrelevent to BB type, and the chainset center/axle. The external BB chainsets I have, look like they could be narrowed in the center. Maybe I'm missing something..