@Dick using a JIS BB with 4-6mm less spindle length should give a similar chainline.
Kinoko have 103mm Sugino CBB (Messenger) BBs for less than £20 right now.
I have one just removed from my beater (D/S bearing coming loose from spindle after two years) if you want to fit/try before you buy?
Used the same BB to fit those jumble sale Miche Primato cranks to girlfriend's jumble sale Bianchi... Meant for use with a 107mm ISO BB but chainline still perfect on 103mm JIS, running Ellipses.
@Dick using a JIS BB with 4-6mm less spindle length should give a similar chainline.
Kinoko have 103mm Sugino CBB (Messenger) BBs for less than £20 right now.
I have one just removed from my beater (D/S bearing coming loose from spindle after two years) if you want to fit/try before you buy?
Used the same BB to fit those jumble sale Miche Primato cranks to girlfriend's jumble sale Bianchi... Meant for use with a 107mm ISO BB but chainline still perfect on 103mm JIS, running Ellipses.