rogerzilla
Legendary Member
It's only really a 10 speed! If they couldn't make the hub ratios wider*, they should have made the derailleur ratios closer.
The old Sachs-based 6 speed gave no gaps and was easy to understand - to go up the gears you went 15L, 13L, 15N, 13N, 15H and 13H, the numbers being the sprocket teeth and the letters being the hub range (low, normal, high).
*it does get challenging to make a 3 speed hub gear that deviates much from the usual 1.33 internal ratio, as this gives really durable and smooth-running sun and planet sizes. in the BWR, the planets get rather small, as do their pins, and it must be the practical limit for a single-stage mechanism in the standard size shell.
The old Sachs-based 6 speed gave no gaps and was easy to understand - to go up the gears you went 15L, 13L, 15N, 13N, 15H and 13H, the numbers being the sprocket teeth and the letters being the hub range (low, normal, high).
*it does get challenging to make a 3 speed hub gear that deviates much from the usual 1.33 internal ratio, as this gives really durable and smooth-running sun and planet sizes. in the BWR, the planets get rather small, as do their pins, and it must be the practical limit for a single-stage mechanism in the standard size shell.
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