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Two things:
1. Is 1mm clearance with the front chainring catastrophic? I changed from a 18mm JIS to a 14.5mm Nuovo Record ISO thinking it would = 19mm but it seems even tighter. I’m a bit confused why an 80s frame-set intended for Italian Components has such a tight clearance?
Only thing I can think of is that the frame seems to have 126mm dropouts and the Nuovo Record 6 speed is designed around 120mm frames? My knowledge of when frames changed sizes is pretty non-existent.
I can either source another 15.5mm Nuovo Record BB or go up to 18mm with a modern BB? Or I accept this frame isn’t designed for this groupset ?
2. I snapped a newish chain in the lower gear while pushing off at some lights while out of the saddle? Could it have been linked or was I unlucky / could have had the friction slightly wrong / wound too tight?
