Old 01-11-19, 04:55 PM
  #4  
dddd
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Bikes: Cheltenham-Pederson racer, Boulder F/S Paris-Roubaix, Varsity racer, '52 Christophe, '62 Continental, '92 Merckx, '75 Limongi, '76 Presto, '72 Gitane SC, '71 Schwinn SS, etc.

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The whole idea of external bearings is to allow bigger-OD bearings to be used, and to place the bearings in a wider stance to reduce loading.

So the bearings can't be part way in the shell if there is a cup, since the cup has a thickness to it between the bb shell and the bearing.
That's why I suggested the possibility of finding a bearing that mounts without a cup, so that it can be part way in the shell. This would make the most of the available space if you don't want to face down the shell.

On my Klein, there is more than 4mm that can be removed without touching the weld, so there seems no harm in cutting it down if the Phil bb is a good one and if the job is done with proper care.
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