Alfine is the name of a comfort and urban oriented product series by Shimano. It is mainly known for internally geared hubs, but includes also hydraulic disc brakes and levers, chain tensioners, dynamo hubs, cranksets, shift levers, and complete wheels.[1]
Shimano Alfine SG-S500 8 speed epicyclic internally geared hub, laced with spokes and mounted on bicycle.
The Alfine 500 group, first introduced at Eurobike in 2006,[2] included the epicyclic hub gear SG-S500. The internal mechanical design of the gear hub was based on that of the Shimano Nexus Inter 8, with two stepped planetary series, 5th gear being 1:1 direct drive,[3] thus offering 8 speeds with percent intervals of 22,16,14,18,22,16,14, and an overall gear range of 307%, yet in a more attractive design than the Nexus, with better seals allowing slightly greater ruggedness, more attractive auxiliary components such as e.g. a ratcheting trigger shifter similar to the high-end Shimano derailleur shifters, and a hub shell with splines for mounting a disc brake rotor of the center lock standard. These mechanisms are grease-lubricated.
For 2013 a new 505 model is being offered with Di2 electronic shifting.[4]
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 trigger shifter with two-way release.[7] When introduced it had a claimed weight of approximately 1600g without auxiliary components (bolts, actuator, cog, wire, shifter).[8] Production models appeared to have a somewhat beefed up design.[9] The internal mechanisms comprise three stepped planetary series in a sealed oil bath, for greater power transfer efficiency.
For 2013 a new 705 model is being offered with Di2 electronic shifting.[10] This version differs slightly from the 700 model and requires a motor unit with a battery, and an electronic shifter. Shimano offers different styles of electronic shifters that fit a wider range of handlebars than the trigger shifter for the 700 model. It is not possible to use the motor unit or electronic shifters with the 700 model.[11]
^[2], Uncle John's Bike Shed, Shimano Alfine Inter 11 Internal Gear hub, published 16 January 2016
^. Archived from the original on 2012-11-18. Retrieved 2012-11-13., Shimano ALFINE 11-Speed Internal Hub Specifications
External linksedit
January 01, 1970
shimano, alfine, alfine, name, comfort, urban, oriented, product, series, shimano, mainly, known, internally, geared, hubs, includes, also, hydraulic, disc, brakes, levers, chain, tensioners, dynamo, hubs, cranksets, shift, levers, complete, wheels, s700, spee. Alfine is the name of a comfort and urban oriented product series by Shimano It is mainly known for internally geared hubs but includes also hydraulic disc brakes and levers chain tensioners dynamo hubs cranksets shift levers and complete wheels 1 Shimano Alfine SG S700 11 speed epicyclic internally geared hub without auxiliary components Contents 1 Alfine 500 2 Alfine 700 3 See also 4 References 5 External linksAlfine 500 edit nbsp Shimano Alfine SG S500 8 speed epicyclic internally geared hub laced with spokes and mounted on bicycle The Alfine 500 group first introduced at Eurobike in 2006 2 included the epicyclic hub gear SG S500 The internal mechanical design of the gear hub was based on that of the Shimano Nexus Inter 8 with two stepped planetary series 5th gear being 1 1 direct drive 3 thus offering 8 speeds with percent intervals of 22 16 14 18 22 16 14 and an overall gear range of 307 yet in a more attractive design than the Nexus with better seals allowing slightly greater ruggedness more attractive auxiliary components such as e g a ratcheting trigger shifter similar to the high end Shimano derailleur shifters and a hub shell with splines for mounting a disc brake rotor of the center lock standard These mechanisms are grease lubricated For 2013 a new 505 model is being offered with Di2 electronic shifting 4 Gear 1 2 3 4 5 6 7 8 Ratio 5 0 527 0 644 0 748 0 851 1 000 1 223 1 419 1 615Alfine 700 editAlfine 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 trigger shifter with two way release 7 When introduced it had a claimed weight of approximately 1600g without auxiliary components bolts actuator cog wire shifter 8 Production models appeared to have a somewhat beefed up design 9 The internal mechanisms comprise three stepped planetary series in a sealed oil bath for greater power transfer efficiency For 2013 a new 705 model is being offered with Di2 electronic shifting 10 This version differs slightly from the 700 model and requires a motor unit with a battery and an electronic shifter Shimano offers different styles of electronic shifters that fit a wider range of handlebars than the trigger shifter for the 700 model It is not possible to use the motor unit or electronic shifters with the 700 model 11 Gear 1 2 3 4 5 6 7 8 9 10 11 Ratio 12 0 527 0 681 0 770 0 878 0 995 1 134 1 292 1 462 1 667 1 888 2 153 nbsp Alfine 11 Schematic diagramSee also editComparison of hub gears Shimano NexusReferences edit Shimano Technical Documentation Shimano Alfine Bicycle Designs published September 5 2006 Basic Structure of an 8 Speed Hub Scribd Archived from the original on March 6 2016 Shimano route of power transmission for 8 speed hubs SG S505 Alfine Di2 internal hub gear 8 speed 36h black Madison co uk Archived from the original on March 31 2013 ALFINE 8 Speed Internal Hub Shimano North America Archived from the original on October 9 2014 SG S700 S Shimano North Americxa Archived from the original on September 17 2011 First look Shimano Alfine 11 speed hub gear Bikeradar published 8 Feb 2010 DIE SENSATION Shimano bringt 11 Gang Nabe Archived 2010 12 30 at the Wayback Machine radfahren de published February 2 2010 Shimano Alfine 11 hub gear and shifter Road CC published November 30 2010 1 Shimano SG S705 Alfine Di2 internal hub gear 11 speed 2 Uncle John s Bike Shed Shimano Alfine Inter 11 Internal Gear hub published 16 January 2016 Product Archived from the original on 2012 11 18 Retrieved 2012 11 13 Shimano ALFINE 11 Speed Internal Hub SpecificationsExternal links editShimano Alfine product page Retrieved from https en wikipedia org w index php title Shimano Alfine amp oldid 1217846464, wikipedia, wiki, book, books, library,
