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Model Introduced Discontinued Speeds (external) ... Rohloff AG: Speedhub 500/14: 1998 14 526% 130 Nm ... Sturmey Archer X-RF4, X-RK4, X-RD4 2018 4 210%
All Sturmey-Archer gear hubs use epicyclic (planetary) geartrains of varying complexity. The AW is the simplest, using one set of planetary gears with four planets. The AM uses three compound planets with differently sized cogs machined from a common shaft to engage the gear ring and sun gear separately, while the close-ratio three-speeds, and hubs with four or more speeds, use multiple ...
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.
Hub gear: a gearbox mounted inside the hub, 3-speed is common, 5, 7 are available ("Sturmey-Archer"), Enviolo makes a CVT, and Rohloff makes a 14-speed hub. Cable operated by one or two cables; Indicator: a turn signal; Inner tube: a bladder that contains air to inflate a tire. Has a Schrader, "Woods"/"Dunlop" or Presta valve for inflation and ...
The British royal family will be seeing plenty of green in 2025. In April, the Sovereign Grant, which helps fund their activities, will rise by more than $56 million, People magazine reported ...
Mannequins model clothes at a Forever 21 fashion retail store at the King of Prussia mall in King of Prussia, Pennsylvania, U.S. September 30, 2019. JCPenney filed for bankruptcy, Forever 21 was ...
Brown maintained Sheldon Brown's Bicycle Technical Info, a web site highlighting a broad range of cycling subjects ranging from how to fix a bicycle flat tire to details on Raleigh and English three-speed bicycles, [9] Sturmey-Archer hubs, [10] tandems, [11] and fixed-gear bicycles. [12] He repaired cameras and was an amateur photographer.
"I think it was twofold," he explained. "One is, Liza loves humor. I always say, if you can make her laugh, you’re a friend for life. She loves humor, she loves telling jokes.