Guides

Practical guides for owning, restoring and understanding a Sinclair C5. For individual parts, see the parts list.

• Buying a C5: what to check and what adds value
• Driving and maintenance: the Owner's Handbook in summary: controls, instruments, routine maintenance
• Batteries and charging: the original system and modern replacements
• The law: the 1983 regulations, the 2015 changes and what they mean today

• Fault finding: common failures and how to diagnose them
• Restoring a C5: a step-by-step restoration workflow
• How the electrics work: pod, control box, motor protection and battery gauge in detail

• Specifications: dimensions, performance, torques, lubricants, tyre sizes
• Modifications: batteries, rewiring, 24 V conversions, electronics replacements