Originally Posted by
Russ Roth
Last year my wife convinced me we didn't need a hub dyno and lighting and money was tight with the camping gear we already bought and on the first night we got lost in the dark. While it was nice to say I was right it wasn't convenient so this year's tour is being prepped starting with a pair of hub dynos for the adults and usb rechargeable lights for the kids. I'm looking at a shutter precision hub as it seems to get decent reviews for a good price along with a Busch and Muller 40lux light.
You want the 80 lux Cyo Premium which will run in parallel with the USB Werk. I use a Schmidt Edelux II, although the Cyo Premium offers the same optics for much less money.
The IQX reportedly has problems running in parallel with a USB Werk.
The Luxos U has a built-in USB port, but turns it off when the light comes on. Some people also report water ingress issues.
During the day I wouldn't mind the extra drag to charge things and I'm looking at this
https://www.bike24.com/1.php?content=8;product=38306 Busch and Muller USB Werk 361bw
to charge the two battery packs I have which will keep phones and USB lights topped up while riding. Will this be sufficent and is it decent or should I be looking at something more?
Secondary question. Are dynamo hubs solid enough to build into the existing wheels and riding with full time or should I build them into seperate wheels for touring use only.
I have a USB Werk. A small cache battery means I don't get many external power disconnected messages from my Garmin. Apart from that, other options may be better with more output at lower speed.
It's enough to charge my Garmin Edge 800 while in use, so I finish rides with more battery life remaining than I start.
It's not enough to maintain a charge on my Samsung Galaxy S5, unless I switch that into low power mode with no apps running and a dim black and white screen.
Dynamo hubs are plenty strong - front wheels with 100mm OLD axles have a more than ample bracing angle.
The issue is bearing replacement - Schmidt and Shutter Precision hubs require disassembling wheels to replace bearings.
Schmidt claims 50,000 km life. Shutter Precision claims 10,000 - 20,000 which may be one season. Reports of lower bearing life from Shutter Precision hubs aren't uncommon -
Shutter Precision hub bearing replacement.
Shimano dynamo hubs allow bearing replacement without wheel disassembly. I'd have bought one if I was unwilling to pay for a SON28.
https://matt.signorini.id.au/?p=114