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Categories
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Category Archives: Updates
Updates to pages about helmet cameras
John has updated pages about the GoPro and Contour helmet cameras to cover new models.
Posted in Updates
Tagged bicycle, cameras, Contour, GoPro, image, image stabilization, Mobius, shelbroco, Sheldon, Sheldon Brown, sheldonbrown, sheldonbrown.com, Sony, stabilization, sync, synchronization, video
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Writeup on Bike Touring News
Nice writeup of sheldonbrown.com!
Posted in Updates
Tagged shelbroco, Sheldon, Sheldon Brown, sheldonbrown, sheldonbrown.com
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Bridgestone 1982 Catalog
Thanks to Daniel den Hartog for his PDF of the 1982 Bridgestone Bicycles catalog, now online from the Bridgestone table of contents page along with all the other catalogs from 1985 through 1994 and a wealth of other information.
Posted in Updates
Tagged 1982, bicycle, Bridgestone, catalog, shelbroco, Sheldon, Sheldon Brown, sheldonbrown, sheldonbrown.com
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Isvan on Power Management
Osman Isvan has written a paper, Power Management for Lightweight Vehicles, and has been kind enough to send it for posting on sheldonbrown.com. Isvan gives special attention to how to make the most efficient use of electrical-assist power. His conclusions … Continue reading
Posted in Updates
Tagged battery, bicycle, electric, electrical-assist, electrically-assisted, Isvan, Osman, Osman Isvan, pedal, pedaling, power, power management
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Sachs Elan/SRAM E12 Internals
John has posted a new article about the mechanism of the Sachs Elan/SRAM E12 12-speed internal-gear hub; the largest, heaviest, most complicated internal-gear hub ever marketed — flawed execution of a brilliant design concept. The unusual way this hub establishes … Continue reading
Posted in Updates
Tagged 12-speed, bicycle, Elan, gearing, gears, hub, internal, internal-gear, maintenance, repair, shelbroco, Sheldon, Sheldon Brown, sheldonbrown, sheldonbrown.com, SRAM
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Shimano Internal-Gear Hubs
John has made major updates to the pages on Shimano Nexus and Alfine internal-gear hubs — 3-speed, 7-speed and 8-speed; also a page with general mechanical information.
Posted in Updates
Tagged 11-speed, 3-speed, 4-speed, 7-speed, 8-speed, Alfine, anti-rotation, antirotation, cassette jopint, hub, internal, internal-gear, maintenance, Nexus, repair, shimano
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Bicycle Video How-to
John has posted an article on how to synchronize video shot at the same time with more than one camera, and another on image stabilization. These are meaty technical articles.
Posted in Updates
Tagged bicycle, cameras, image, image stabilization, stabilization, sync, synchronization, video
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Helmets
John has written an article about helmets and helmet issues. It includes a blast from the past, John’s photo of Sheldon in 1978 wearing a pre-Igor the Eagle helmet, and photos documenting changes in helmet design since the 1970s.
Assembly of Shimano 7-speed Hub Axle Unit
Shimano’s service instructions for the Nexus 7-speed internal-gear hub assume that you will replace the entire axle unit. Taking disassembly past the point where instructions are available is all too easy. You might also want to cannibalize parts to assemble … Continue reading
Internal gear theory
John has posted his article on internal-gear hub theory, history and some practical advice. This article describes the internal workings of all the newest hubs including those with compound and multi-stage gearing.
Posted in Updates
Tagged compound, gearing, gears, hub, internal, internal-gear, multi-stage, Nexus, planetary, repair, Sachs, shimano, SRAM, Sturmey-Archer
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