- Shimano 32H DH-3D80 disc hub dynamo, purchased from Rose and sent to Harry.
- B + M Lumotec IQ2 Luxos U senso plus front headlamp with USB connection, from Rose.
- B + M Toplight View Brake Plus dynamo back light, from Rose.
- Light cable - twin-core, from Rose (you'll need this to connect the rear light to front light).
...
Looking forward to not looking back
I've been running this setup (on slightly different hubs) ever since the IQ2 was available over here back in 2013: it has been tested in some rough conditions and it hasn't let me down. The beam shape is an acquired taste apparently, but I have always liked it; a small trade-off for USB power, as it's more than bright enough for fast night riding. The Toplight series of rear lights are nice: bright enough to be seen, not so bright they blind, standlight, and integrated reflector.
Just remember that USB's not waterproof, so you can only charge when it's not raining -- get this wrong and your lights might start behaving strangely (I have a Mk I and I have to be careful when washing the bike -- this may be fixed in the Mk IIs, which don't have a removable remote switch). You shouldn't need to charge on a 200 anyway, at least not unless you're ECE'ing it; and you might find one of these short cables usefully uncluttering for when you do:
mini-USB for Garmin 800/810 (or
something a bit more cluttery if you use the Out-Front mount -- if you're good with a soldering iron, this can be shortened), or
micro-USB for Garmin 1000.
Also, you probably want to charge during the day, as charging with the light on dims the light noticeably. I find my Garmin 800 lasts right through the darkened hours from a full-ish charge on a dimmed/off screen.
For the length of PBP I intend to use the USB during the day to recharge a 10,000mAh battery pack, which I will use to charge my phone (for toonz) and the Garmin. The Garmin is really just a glorified speedo-cum-ride-recorder on PBP, so if I have to charge in the rain then I will drop it into the pack to charge in the dry and follow the arrows for an hour or two. I reckon it takes ~20 hours to recharge the battery pack from flat from the IQ2's USB port -- but one full charge should give me enough to recharge the phone five times (I should only need it recharging twice, perhaps three times on PBP), or the Garmin about eight times (I should need six, I think). If the battery pack fails then I will charge directly from USB; if I lose USB then I will use the battery pack for the GPS-only; if I lose both then I will just ride my bike. I might even reassess and use a smaller and lighter battery pack closer to the time (it's a bit weighty at ~260g).