3 x Raleigh Sojourns for this year.
Just a thought...... How about each machine has it's own service record that is somehow attached to it.
Then when the machine is back home, (after being up the road at various potential hosts) the base camp will
be able to respond to any issues that need to be replaced/needs attention. (Hosts can fill in an advisory note, bit like an MOT).
Re: Lights, these simply have to work with every type of weather thrown at them, it's not worth the risk of failure! Nor is it worth cutting any corners with any of the other kit be it tyres with a slight cut in the sidewall, brake pads that are on the minimum thickness. Cables that are starting to fray. Replace and throw it all in a pile then at a later date Steve can make any decisions on what he wants to do with any of it say this time next year.
Dynamos- even the thought of dragging any sort of dynamo puts shivers up my spine, plus the added rolling weight.
Remember also that there is only a certain amount of charge Li-on/ Ni-MH batteries can take, so hosts have some spares