This topic covers criteria for electrically assisted pedal cycles (EAPCs), key components, devices to overcome restrictions, deciding if aftermarket kits m
Topic Synopsis
This topic covers criteria for electrically assisted pedal cycles (EAPCs), key components, devices to overcome restrictions, deciding if aftermarket kits meet regulations, safety implications, and moral/commercial consequences.
Key Concepts & Core Principles
- Hydraulic brake bleeding and adjustment: Understanding the process of removing air from brake lines and setting correct lever feel using manufacturer-specific procedures.
- Electronic shifting systems (e.g., Shimano Di2, SRAM eTap): Diagnosing battery issues, updating firmware, and adjusting limit screws and indexing via diagnostic tools.
- Wheel building and truing: Calculating spoke lengths, lacing patterns (3-cross, radial), and achieving lateral/radial true within 0.2mm using a truing stand.
- Suspension servicing: Replacing seals, oil, and air springs in forks and shocks, setting sag, and adjusting rebound/compression damping for rider weight and terrain.
- Bottom bracket and headset standards: Identifying press-fit vs. threaded types, using correct tools for removal/installation, and torquing to specifications.
Exam Tips & Revision Strategies
- Memorise the 250W and 15.5mph limits.
- Check manufacturer specifications carefully.
- Understand the consequences of illegal modifications.
Common Misconceptions & Mistakes to Avoid
- Confusing EAPC with electric motorcycle.
- Assuming all aftermarket kits are legal.
- Underestimating liability for non-compliance.
Examiner Marking Points
- State the legal criteria for an EAPC.
- Identify key components like motor and battery.
- Explain how speed/power restriction devices work.
- Assess if an aftermarket kit complies with regulations.
- Describe safety risks of non-compliant EAPCs.