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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 ...
Henry Sturmey. 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 ...
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 ...
Hub dynamo. A hub dynamo is a small electrical generator built into the front hub of a bicycle wheel that is usually used to power lights. Often the hub "dynamo" is not actually a dynamo, which creates DC, but a low-power magneto that creates AC. Most modern hub dynamos are regulated to 3 watts at 6 volts, although some will drive up to 6 watts ...
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.
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.
Production. 1915–1923. Engine. 550 cc air-cooled four-stroke single-cylinder (4 hp) Power. 4 bhp. The Triumph Model H (also known as the 'Type H' and 'the Trusty') is a British motorcycle made by Triumph Engineering Co Ltd in Coventry, England. [ 1] A total of 57,000 Triumph Model H motorcycles were made from 1915 until production ended in 1923.
The company's response to the 1960s passion for "unisex" small wheeled "shopping" bicycles was the step-framed "Newpin", with single-speed and three-speed Sturmey-Archer enclosed hub gearing systems. These were offered in both a fixed frame and separable two piece frame.