Originally Posted by
Russ Roth
[...]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. 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
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.
Here is a nice overview about dynamo power harvester (like the E-Werk). In case you need more power, take a look at pedalcell.com (But don't forget that you'll have at least considerably more drag with that system, even if it has an efficiency of 60-65%)
Regarding hub dynos: All better dyno hubs are solid enough to use full time. In case you don't want to spent time of rebuilding your wheel (or you don't want to pay someone for this), take a look at the
velogical rim dynamo (
here and
here are some english reviews). Those are not cheap, but you don't need a new wheel, and they are as good as modern hub dynos. If you order them from outside the EU, you can deduct 19% VAT tax from the price (and have to consider duty/import taxes). There are different versions, one for slower travel (and higher power output), one for lower drag (and less power)
40 lux is imo a bit too less brightness, unless you drive in complete darkness (without ambient street lights or car lights)