Choosing the right gearing
Folding bikes use various gearing systems. The right choice depends on your terrain and preferences.
Types of gearing
Hub gears
Gears contained inside the rear hub. Low maintenance, can shift when stationary, enclosed from weather. Common options: 3-speed (Brompton), 5-speed, 8-speed.
Derailleur gears
External system with visible chain moving between sprockets. Wider gear ranges possible, lighter weight, require more maintenance. Common options: 7-speed, 8-speed, 9-speed.
Combined systems
Some bikes (like Brompton 6-speed) combine hub and derailleur for wider range in a compact package.
How many gears do you need?
- Single speed: Flat cities with few stops
- 3 speed: Mostly flat with occasional gentle hills
- 6-8 speed: Most UK commutes, moderate hills
- 9+ speed: Hilly areas, varied terrain, longer rides
Match gearing to terrain
Consider your actual commute. A flat London route needs fewer gears than hilly Bristol. Test ride if possible to assess whether the gearing suits your legs and your hills.