Charging of electronic devices that becomes a problem when touring.
If it's 2 or 3 days, you can use a mobile battery, but it's difficult for a long time. Focusing on the dynamo hub, Sinewave Cycles has developed a charger that can be charged via USB. The Reactor is a USB charger that can be installed in place of the stem cap.
The cord can be connected to the dynamo hub on the front wheel through the interior of the steering column.
* For installation, the star fangle nut must be driven deeper than usual (about 45 mm).
・ Start charging at 5.5km / h
・ Fully charged at 14.4km / h
Protrusion: 9.8 mm