Advanced Bicycle Mechanics Classes

At Freewheelin’, aprons are used in the same way as karate belts: to mark a student’s level of mastery. Each apron color (Green, Red, Purple and Black Apron) indicates a specific level of mastery over particular skills and principles. Kids build their confidence with each new apron and can mentor other youths to build their skills.

Green Apron – Successfully completing the Earn-A-Bike class


Red Apron – Red apron focuses on measuring and sizing as well as fine adjustments. After completing red apron a youth will be able to:
  • Use a tire gauge and understand the measuring tire pressure in KPA and PSI
  • Identify bicycle cables and measure them correctly
  • Measure chain wear and size a chain
  • Adjust indexed derailleurs and understand precision vs. accuracy
  • Adjust brakes, and have a basic understanding of kinetic energy, heat and entropy.

Purple Apron – Focuses on a deeper understanding of components. Adjusting of bearing systems and overhauls of component are introduced. Upon completing the purple Apron, a Youth would be able to assemble a new bike from a box, which is often part of an interview at a bike shop.

Black Apron – The highest level of Apron takes a bit more practice. A black apron will be tested on proper diagnostic procedure, be able to balance competing factors like those in truing a wheel. They must demonstrate good use of inquiry-based learning as well as industry nomenclature for standardized systems like headsets and bottom brackets. 

There is a registration fee for the Advanced Apron Classes. This is part of your investment in your son or daughter’s participation in our program. 

Learn About Next Class Opening

Participant Must Have Earned Green Apron to be Eligible