frame mounted Ring Locks, on tour , are excellent, because they are on the frame.
Tubus Locc rear rack would be the best way to cope with a U lock, it seems ,
as the lock stows inside the left leg of the Rack, so convenient,
and not occupying main triangle space
Apparently made around a particular Abus U lock.
... another option: Folding Link locks, Abus sells those too.
they fold up and, compactly, stow in a pouch.. several price points ..
Last edited by fietsbob; 06-22-11 at 09:35 AM.