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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 ...
John James Henry Sturmey (1857–1930), known as Henry Sturmey, is best remembered as the inventor with James Archer of the Sturmey-Archer three-speed hub for bicycles, but he was a technical editor and journalist heavily involved as a pioneer of the cycling and automotive industries. Born at Norton-sub-Hamdon, Somerset, on 28 February 1857 [1 ...
v. t. e. Sturmey-Archer S3X. A hub gear, [1] internal-gear hub, [2] internally geared hub[3] or just gear hub[4] is a gear ratio changing system commonly used on bicycles that is implemented with planetary or epicyclic gears. The gears and lubricants are sealed within the shell of the hub gear, in contrast with derailleur gears where the gears ...
Sturmey-Archer's assets were acquired by SunRace of Taiwan who relocated the factory to Taiwan and sales to the Netherlands. Sister company Brooks was sold to Selle Royal of Italy. In 2001, following continuing financial problems at Derby Cycle, there was a management buy-out of all the remaining Raleigh companies led by Alan Finden-Crofts.
Another character is called Sturmey Archer, also a manufacturer of bicycle gears. Acheron Hades. Hugely intelligent and equally immoral ...
Around 2009, Sturmey-Archer released new hub dynamo/drum brake units with an aluminum housing, designated X-FDD [1] and XL-FDD. [2] The Schmidt Original Nabendynamo (SON) can power two 6-volt lamps in series at speeds above about 19 km/h (12 mph), and Schmidt manufactures lamps designed to facilitate this.
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.
The Bickerton was a portable bicycle launched when folding bicycles tended to be 20-inch (51 cm) step-through frames with a simple hinge, such as the folding variant of the Raleigh Twenty. The first Bickerton was made entirely of aluminium profiles, without any welds. The prototype was unique, lightweight (8.8 kg, 18 lb) and with a small folded ...