Sturmey Archer SC coaster brake 108mm Rear hub

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Hub Data
Manufacturer Sturmey Archer
Model SC coaster brake
Position Rear
Axle Type 3/8" (9.5mm)
OLN 108 mm
Spoke Interface Type J-Bend
Brake Compatibility coaster brake
Drive Interface single cog driver
Internal Gearing none
Dynamo Type none
Spoke Hole Diameter 2.5 mm
Left Flange Diameter 52 mm
Right Flange Diameter 52 mm
Left Flange Offset 25.7 mm
Right Flange Offset 25.7 mm
Mid-Flange Offset 0 mm (centered)
Weight 918 g
Hub ID 865
Record Status Public
Created Feb 18, 2021 5:02pm
hub dimension diagram
2/18/2021 -- NOS specimen from 1974 measured by Karl. 3/8" 26tpi axle threading. Center of axle to center of reaction arm hole is about 78.5mm. Flanges are 2mm thick and spoke holes have no chamfering. Plastic oil cap on this specimen. Locknut to driver flange is 17mm. Looks like this takes a 1/8" cog and two 1/6" spacers to adjust chainline, just like most vintage 3spd SA hubs. Weight of 918g is the bare hub weighed with no axle nuts or cog or loose hardware of any type. -Karl