Sturmey Archer RS-RK3 3Spd Rotary Disc Hub - Silver - 36 Hole

3 Speed Disc Brake Rear Hub

Features:
- 3-speed with wide gear ratio of 177%
- Gear steps of 33% and 33%
- Rotary gear selector without protrusions outside the frame
- 6061 Aluminium hub shell
- 36 spoke holes
- Compatible with 17 to 19 teeth sprocket
- Anodised alloy finish
- Weight: 1095g

Gear Ratio:
- Overall Range: 177%
- Gear 1 - 75% (Gear 2 -25%)
- Gear 2 - 100% (Direct Drive)
- Gear 3 - 133% (Gear 2 +33%)

Specifications:
- Type: 6-Bolt disc brake
- Hub Shell Material: 6061 aluminium
- Axle Diameter: 3/8 inch slotted
- Axle Length: 185mm
- Over Locknut Dimension: 135mm
- R Axle Protrusion Length: 26mm
- L Axle Protrusion Length: 24mm
- Pitch Circle Diameter: 67.0mm
- Flange Width: 56.6mm
- Center to Flange Right: 20.8mm
- Center to Flange Left: 35.8mm
- Spoke Compatibility: 13G and 14G
- Chain Line 1/8 Inch Flat: 38.7mm
- Chain Line 1/8 Inch Dished: 36.0mm / 40.4mm
- Chain Line 1/8 Inch Deep Dished: 34.2mm / 43.2mm
- Chain Line 3/32 Inch Flat: 38.3mm / 39.1mm
- Chain Line 3/32 Inch Dished: 36.6mm / 40.8mm