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2. Hub gear - Wikipedia

   en.wikipedia.org/wiki/Hub_gear

   Before epicyclic gears were used in bicycle hubs, they were used on tricycles. Patents for epicyclic hubs date from the mid-1880s. [5] [6] The first patent for a compact epicyclic hub gear was granted in 1895 to the American machinist Seward Thomas Johnson of Noblesville, Indiana, U.S.A. [7] This was a 2-speed but was not commercially successful.

3. Comparison of hub gears - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_hub_gears

   428% [7] 160 Nm [7] 1200g raw cartridge, 1750g total system weight including SWAP and Hyseq Onesie [7] eMTB, heavy cargo, commuter. Rohloff AG. Speedhub 500/14.

4. Cogset - Wikipedia

   en.wikipedia.org/wiki/Cogset

   The widening of the sprocket carrier on the cassette hubs to 41.5 mm resulted in a decrease in the distance between the hub flanges. For Shimano and SRAM the cassette spacing developed as follows. Early Shimano 7-speed cassettes are 36 mm wide, with sprocket spacing of 3.65 mm, but levers and rear derailleurs are not compatible with later ...

5. Three-speed bicycle - Wikipedia

   en.wikipedia.org/wiki/Three-speed_bicycle

   Three-speed bicycle. The three-speed bicycle is a bicycle that uses internal hub gears at the rear wheel hub to provide three gear ratios. Three-speed hubs have been in use since the early 1900s. Though they are heavier than comparable derailleur systems, internal-gear hub systems generally last longer and require less maintenance.

6. Shimano Alfine - Wikipedia

   en.wikipedia.org/wiki/Shimano_Alfine

   Alfine 700 is an internal epicyclic hub gear for bicycles, manufactured by Shimano since 2010. The 700 has 11 speeds, with intervals of approximately 29% for the first to second gear gap, and 13% - 14% for the other gears, resulting in an overall gear range of 409%. [ 6] There is no direct drive 1:1 gear. It is operated by a single ratcheting ...

7. Shimano - Wikipedia

   en.wikipedia.org/wiki/Shimano

   Shimano's family of internally geared hubs. Available in 3-, 7- and 8-speed with or without a coaster brake. The Nexus hubs are comparable in range to a full 16–20-speed system. "Servo Wave" Introduced in the mid-1990s, this system allowed brake levers to pull more brake cable at the start of the lever stroke than at the end.