Just laced the Shimano DH-3N30[1] into a wheel, added a BUSCH & MULLER
Lumotec Oval Senso Plus at the front and a DToplight Plus at the back.
And its bloody BRILLIANT! Wheel the bike out for a night shift and the
lights are on, cycle home in the morning it's off! It's magic I tell
you, magic. For year long commuters, hub dynamos and the Senso Plus is
a brilliant combo.
It replaced my FER2000 which I still rank as a good solution because;
a) They are cheap.
b) If you bend the wheel the dynamo can be moved.
c) Faultless performance through two winters and still working.
So I'm off for a sundown cycle ride to find out *exactly* when it turns
on >:-)
[1]Shimano claim PCD 74mm, I dont reckon it's an inch over 70mm and
that's what I laced for, but I'm no expert at this malarky yet.