I'm swapping a groupset over onto another frame and something doesn't seem correct. Hoping someone has experience here.
The bottom bracket is Shimano 4600 hollogram II style external cups. There's a free moving bearing in the cup on the right, but (maybe) not on the left because it doesn't move at all. Now, silly as it may sound, I can't even tell if the left side is a seized bearing or whether it's simply a structural support.
Should both cups have a free moving bearing, or just the one on the drive side? I would think both but I might be wrong.
The bottom bracket is Shimano 4600 hollogram II style external cups. There's a free moving bearing in the cup on the right, but (maybe) not on the left because it doesn't move at all. Now, silly as it may sound, I can't even tell if the left side is a seized bearing or whether it's simply a structural support.
Should both cups have a free moving bearing, or just the one on the drive side? I would think both but I might be wrong.