Originally Posted by
ThermionicScott
Ah, I think it has way more to do with your cranks than whether they're sealed or cup-and-cone. The Silstar has dead-straight arms that require a long BB spindle for everything to clear...
...while the 105's I'm imagining are curved inward for more foot clearance, allowing a shorter spindle for the same chainline.

The winning reply. thanks. Now I can
really rest easier.