I have an old Carlton Corsair with "in between" chain rings and a five speed block.
The idea is that you change chainring and sprocket sort of in turn* to work up through ten gears. It's a stupid idea and doesn't really work. But, it exists.
* 1S, 1B, 2S, 2B ... 5S, 5B.
@mashton started
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I have an old Carlton Corsair with "in between" chain rings and a five speed block.
The idea is that you change chainring and sprocket sort of in turn* to work up through ten gears. It's a stupid idea and doesn't really work. But, it exists.
* 1S, 1B, 2S, 2B ... 5S, 5B.