besides the need to have a 120 spaced frame coldset to 130, internal gear hubs like the alfine are compatible with track ends, right?
Alfine is 135, Nexus is 130.
Yes. The axles need to be held at a specific angle.
To achieve this the Shimano Nexus come with tabbed washers/spacers, that are available in different angles to suit different dropouts as seen here http://www.sjscycles.co.uk/category.asp?cat_id=704&pf_id=&jump=0&sfile=1=
Alfine is 135, Nexus is 130.
Yes. The axles need to be held at a specific angle.
To achieve this the Shimano Nexus come with tabbed washers/spacers, that are available in different angles to suit different dropouts as seen here
http://www.sjscycles.co.uk/category.asp?cat_id=704&pf_id=&jump=0&sfile=1=