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Sturmey-Archer
Sturmey-Archer was a manufacturing company originally from Nottingham, England. It primarily produced bicycle hub gears, brakes and a great many other sundry bicycle components, most prominently during their heyday as a subsidiary of the Raleigh Bicycle Company. In the past, it also manufactured motorcycle hubs, gearboxes and engines. The company was founded in 1902 by Henry Sturmey and James Archer under the guidance of Frank Bowden, the primary owner of Raleigh. In 2000, the assets and trademarks of Sturmey-Archer were sold to Sun Race of Taiwan which was renamed Sun Race Sturmey-Archer Inc. and production moved to Taiwan. Products 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 h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sturmey-Archer 7847
Sturmey-Archer was a manufacturing company originally from Nottingham, England. It primarily produced bicycle hub gears, brakes and a great many other sundry bicycle components, most prominently during their heyday as a subsidiary of the Raleigh Bicycle Company. In the past, it also manufactured motorcycle hubs, gearboxes and engines. The company was founded in 1902 by Henry Sturmey and James Archer under the guidance of Sir Frank Bowden, 1st Baronet, Frank Bowden, the primary owner of Raleigh. In 2000, the assets and trademarks of Sturmey-Archer were sold to Sun Race of Taiwan which was renamed Sun Race Sturmey-Archer Inc. and production moved to Taiwan. Products 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 cl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sturmey-Archer SW Hub Exploded View Parts List
Sturmey-Archer was a manufacturing company originally from Nottingham, England. It primarily produced bicycle hub gears, brakes and a great many other sundry bicycle components, most prominently during their heyday as a subsidiary of the Raleigh Bicycle Company. In the past, it also manufactured motorcycle hubs, gearboxes and engines. The company was founded in 1902 by Henry Sturmey and James Archer under the guidance of Frank Bowden, the primary owner of Raleigh. In 2000, the assets and trademarks of Sturmey-Archer were sold to Sun Race of Taiwan which was renamed Sun Race Sturmey-Archer Inc. and production moved to Taiwan. Products 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 hu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hub Gear
A hub gear, internal-gear hub, internally geared hub or just gear hub 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 and mechanism are exposed to the elements. Changing the gear ratio was traditionally accomplished by a shift lever connected to the hub with a Bowden cable, and twist-grip style shifters have become common. Hub gear systems generally have a long and largely maintenance-free life though some are not suitable for high-stress use in competitions or hilly, off-road conditions. Many commuter or urban cycles such as European city bikes are now commonly fitted with 7-speed gear-hubs and 8-speed systems are becoming increasingly available. Older or less costly utility bicycles often use 3-speed gear-hubs, such as in bicycle sharing systems. Many folding bicycles use 3-speed gear-hubs. Mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raleigh Bicycle Company
The Raleigh Bicycle Company is a British bicycle manufacturer based in Nottingham, England and founded by Woodhead and Angois in 1885. Using Raleigh as their brand name, it is one of the oldest bicycle companies in the world. After being acquired by Frank Bowden in December 1888, it became The Raleigh Cycle Company, which was registered as a limited liability company in January 1889. By 1913, it was the largest bicycle manufacturing company in the world. From 1921 to 1935, Raleigh also produced motorcycles and three-wheel cars, leading to the formation of Reliant Motors. Raleigh bicycle is now a division of the Dutch corporation Accell. In 2006, the Raleigh Chopper was named in the list of British design icons in the Great British Design Quest organised by the BBC and the Design Museum. History Early years The history of Raleigh bicycles started in 1885, when Richard Morriss Woodhead from Sherwood Forest, and Paul Eugene Louis Angois, a French citizen, set up a small bicy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hub Dynamo
A hub dynamo is a small electrical generator built into the 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 at 12 volts. Models The market was largely pioneered by Sturmey-Archer with their Dynohub of the 1930s–1970s. This competed effectively with contemporaneous bottle dynamos and bottom-bracket generators, but the Dynohub was heavy with its steel housing and was discontinued in the 1980s. Around 2009, Sturmey-Archer released new hub dynamo/drum brake units with an aluminum housing, designated X-FDD and XL-FDD. The Schmidt Original Nabendynamo (SON) can power two 6-volt lamps in series at speeds above about , and Schmidt manufactures lamps designed to facilitate this. These lamps have optics based on the ''Bisy FL'' road lights. The efficiency of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 February 1857 he died aged 72 at his home in Coventry on 8 January 1930. Maths and science Henry Sturmey rode his first bicycle while at school in Weymouth when in his mid-teens in 1872 and became a keen cyclist. He was a touring enthusiast rather than interested in track racing. Sturmey's first post was an assistant-master at Brixton Hill College, London S.W. He resigned in 1877 to devote himself to writing a book on cycling published as ''The Indispensable Bicyclist's Handbook''. Dealing with every bicycle on the market and 300 pages long the first edition was sold out within a month. Following an unsuccessful attempt to sell bicycles made to his own d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sturmey Archer 3spd Bicycle Hub
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 he died aged 72 at his home in Coventry on 8 January 1930. Maths and science Henry Sturmey rode his first bicycle while at school in Weymouth when in his mid-teens in 1872 and became a keen cyclist. He was a touring enthusiast rather than interested in track racing. Sturmey's first post was an assistant-master at Brixton Hill College, London S.W. He resigned in 1877 to devote himself to writing a book on cycling published as ''The Indispensable Bicyclist's Handbook''. Dealing with every bicycle on the market and 300 pages long the first edition was sold out within a month. Following an unsuccessful attempt to sell bicycles made to his own de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fixed Gear
A fixed-gear bicycle (or fixed-wheel bicycle, commonly known in some places as a fixie) is a bicycle that has a Bicycle drivetrain systems, drivetrain with no freewheel mechanism. The freewheel was developed early in the history of bicycle design but the fixed-gear bicycle remained the standard track racing design. More recently the "fixie" has become a popular alternative among mainly urban cyclists, offering the advantage of simplicity compared with the standard multi-geared bicycle. Most bicycle hubs incorporate a freewheel to allow the pedals to remain stationary while the bicycle is in motion, so that the rider can coast, i.e., ride without pedalling using forward momentum. A fixed-gear drivetrain has the drive sprocket (or cog) threaded or bolted directly to the hub of the back wheel, so that the pedals are directly coupled to the wheel. During acceleration, the pedal crank drives the wheel, but in other situations, the rear wheel can drive the pedal cranks. This direct c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fixed Wheel
A fixed-gear bicycle (or fixed-wheel bicycle, commonly known in some places as a fixie) is a bicycle that has a drivetrain with no freewheel mechanism. The freewheel was developed early in the history of bicycle design but the fixed-gear bicycle remained the standard track racing design. More recently the "fixie" has become a popular alternative among mainly urban cyclists, offering the advantage of simplicity compared with the standard multi-geared bicycle. Most bicycle hubs incorporate a freewheel to allow the pedals to remain stationary while the bicycle is in motion, so that the rider can coast, i.e., ride without pedalling using forward momentum. A fixed-gear drivetrain has the drive sprocket (or cog) threaded or bolted directly to the hub of the back wheel, so that the pedals are directly coupled to the wheel. During acceleration, the pedal crank drives the wheel, but in other situations, the rear wheel can drive the pedal cranks. This direct coupling allows a cyclist to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birmingham Small Arms Company
The Birmingham Small Arms Company Limited (BSA) was a major British industrial combine, a group of businesses manufacturing military and sporting firearms; bicycles; motorcycles; cars; buses and bodies; steel; iron castings; hand tool, hand, power tool, power, and machine tool, machine tools; coal cleaning and handling plants; sintered metals; and hard chrome process. After the Second World War, BSA did not manage its business well, and a government-organised rescue operation in 1973 led to a takeover of such operations as it still owned. Those few that survived this process disappeared into the ownership of other businesses. History of the BSA industrial group Machine-made guns BSA began in June 1861 in the Gun Quarter, Birmingham, England. It was formed by a group of fourteen gunsmith members of the Birmingham Small Arms Trade Association specifically to manufacture guns by machinery. They were encouraged to do this by the War Office which gave the BSA gunsmiths free access ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epicyclic
An epicyclic gear train (also known as a planetary gearset) consists of two gears mounted so that the center of one gear revolves around the center of the other. A carrier connects the centers of the two gears and rotates the planet and sun gears mesh so that their pitch circles roll without slip. A point on the pitch circle of the planet gear traces an epicycloid curve. In this simplified case, the sun gear is fixed and the planetary gear(s) roll around the sun gear. An epicyclic gear train can be assembled so the planet gear rolls on the inside of the pitch circle of a fixed, outer gear ring, or ring gear, sometimes called an ''annular gear''. In this case, the curve traced by a point on the pitch circle of the planet is a hypocycloid. The combination of epicycle gear trains with a planet engaging both a sun gear and a ring gear is called a ''planetary gear train''.J. J. Uicker, G. R. Pennock and J. E. Shigley, 2003, ''Theory of Machines and Mechanisms,'' Oxford University Pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sir Frank Bowden, 1st Baronet
Sir Frank Bowden, 1st Baronet, (30 January 1848 – 25 April 1921) was a British businessman and inventor. He was a founder of the Raleigh Bicycle Company. Biography Frank Bowden was born in Devon, England, and made a fortune in property development in Hong Kong in the 1870s. In 1879, he married Amelia Frances, an American heiress.Personal Capitalism and Corporate Governance: British manufacturing in the First half of the Twentieth Century p23, LEWIS, Myrddin John, et al, Ashgate Publishing, When he returned from he was seriously ill and his doctor gave him six months to live. Bow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
