Originally Posted by
Tourist in MSN
The paperwork that came with my Luxos U said that the USB port would still provide power with the light on, but that it was limited to less than 100 milliamps. So, you were close to right, as 100 milliamps from a USB port is only a half watt.
The exploded diagrams that I have seen for Shimano dynohubs only have user replaceable bearings on one side of teh hub, not both sides.
I attached the schematic for a Shimano hub I have on one of my bikes.
They're both replaceable, and the left cone is the same as the right. You can also buy the rotor as an assembly including the left cone.
https://matt.signorini.id.au/?p=114