Apron Advanced
Purple + Black — bikes with gears.
Now with gears. Wheel building, bottom brackets, freewheels and cassettes, derailleur tuning, the internal-hub bikes you'll meet at the shop (Sturmey-Archer, Shimano Nexus), frame alignment, restoration triage. The transition from single-speed to multi-gear is the through-line.
- E09Purple Apron
Wheel Building & Truing
Lacing patterns, dish, the building bench.
- E10Purple Apron
Bottom Brackets & Cranks
The pedal-power interface.
- E11Purple Apron
Hubs & Freewheels
Cassettes, freewheels, and the internal-hub sidebar.
- E12Purple Apron
Shifting Systems
Cable vs. internal hub, derailleur tuning.
- E13Black Apron
Frame Assessment & Alignment
Reading a frame for the truth it tells.
- E14Black Apron
Suspension & Dampers
Forks, dampers, and where small wheels change the math.
- E15Black Apron
Restoration Triage
The donation-bike pipeline.
- E16Black Apron
The Black Apron
Synthesis — what mastery looks like.