I have the BBS02 and here are my thoughts.
1. Gear sensor: it improves the shifting but still not perfect gear changes for me. I am considering using an Alfine rear hub.
2. Gear changes: when I am approaching traffic lights or coming to a steep hill I go down gears (up the cassette). I don't go very fast but it puts less strain on the system, it will not thank you for hammering it all the time. When I am out I see non bikers crunching their gears due to not changing down, it takes a while to do it automatically.
3. Derailleur adjustment screws are Japanese International Standard not the standard Phillips screws we use. You can get away with using a standard screwdriver but it can damage the screws
4. Buy the bearings, I change mine every year, there are videos on YouTube to show you how.
1. Gear sensor: it improves the shifting but still not perfect gear changes for me. I am considering using an Alfine rear hub.
2. Gear changes: when I am approaching traffic lights or coming to a steep hill I go down gears (up the cassette). I don't go very fast but it puts less strain on the system, it will not thank you for hammering it all the time. When I am out I see non bikers crunching their gears due to not changing down, it takes a while to do it automatically.
3. Derailleur adjustment screws are Japanese International Standard not the standard Phillips screws we use. You can get away with using a standard screwdriver but it can damage the screws
4. Buy the bearings, I change mine every year, there are videos on YouTube to show you how.