I imagine there is another pulley wheel just behind the stand and obscured by the box/bag which allows the lower half of the chain to run from the bottom of the chainring to the derailleur
Exactly right.
@Buffalo_Bill started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Exactly right.