2 Speed Internally Geared Hub (Part 1)
This is an internally geared 2 speed hub dating back about 50 years. I plan to use this to build a 26 x 1 3/4 BE rim with #13 spokes for my light carrier Sekine. Light carrier is a misnomer as it weighs 36 kilograms.
Here's a breakdown diagram and instructions.
The hub was manufactured by Yamamoto Iron Works based in Osaka. A quick check revealed that the company was founded in 1915, 100 years ago and is still in business.
This type of 2 speed hub where shifting is performed by pedaling backwards is known today as "kickback"and Sturmey-Archer has a complete line-up. But the specs are for modern-day bicycles and cannot be used on a traditional 40 spoke BE rim.
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