BN: I am working until 6pm tomorrow
GN: The students, or most of them, will be gone
GN: It'll be dark, so I can try out my new B&M IQ Premium dynamo light. 80 lumens of shine in the right direction. I shall retain the Hope Vision 1 on the 'bars until I know it's all working as it should be.
Update: A partial success. All works as it should, but I need to adjust the beam. I think it'll be trial and error, only when I stop to adjust it the beam disappears! The running lights are useful though.