Mid-drive vs hub: The BBS02 replaces the bottom bracket entirely, so you lose the original crankset. Mid-drives work through the bike’s gears, giving consistent mechanical advantage across all speeds, which is useful for climbing and variable terrain.
EggRider V2: Replaces the stock Bafang display. Connects via Bluetooth to a smartphone app where every BBS02 parameter is configurable: current limits, assist levels, PAS curves, speed limits. No proprietary programming cable needed. I tuned the assist curve for more torque at low cadence (climbing) and flatter response at higher cadence (road).
Chain & derailleur: A mid-drive with a single chainring puts more stress on the drivetrain than a regular bike. Shift before steep sections, not during them. The 11–32T cassette and Acera derailleur handle the load fine.
changed by me
goes on and off as I need it
The closest catalogue sheet I could find, rather than a record of this
exact bike. Mine was delivered with the 9-speed Altus/Acera group instead of the
8-speed one the sheet lists, so 27 gears where the sheet says 24, and it wears lime graphics rather than the cyan on the
bike in the photo. Frame, fork, brakes, wheels and cockpit all match. ↩︎
