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Category Archives: Updates
Bottom bracket information revised
We’ve added David Richardson’s photo of damage to a Shimano Octalink V1 crank from installing it on a V2 spindle to the bottom-bracket database. Also, we’ve coordinated bottom-bracket threading standards tables in the several files where they appear.
Posted in Updates
Tagged bicycle, bottom bracket, cartridge, cup and cone, Isis, Octalink, Sheldon, Sheldon Brown, sheldonbrown, sheldonbrown.com, shimano, square taper
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Jobst Brandt pages updated
Harriet has reorganized the Jobst Brandt pages — formatting for easier reading, placing them into categories and in sequence, fixed broken links. Brandt’s trenchant comments demolish a number of bicycling myths, and bring an engineering perspective to issues of mechanical … Continue reading
Posted in Updates
Tagged bicycle, myths, Sheldon, Sheldon Brown, sheldonbrown, sheldonbrown.com, spoking, thorns, tire, tubular, tyre, wheel, wheelbuilding
2 Comments
Home-brew hybrid gearing
Additions to the article on internal-gear hubs — more about how to construct a multi-speed hybrid-gearing system using a stock 3-speed hub and two sprockets and/or two chainwheels. It indexes even without index shifters! Photo courtesy of Mark Stonich.
Posted in Updates
Tagged Alfine, bicycle, gearing, gears, hub, hybrid, hybrid gearing, internal, Nexus, planetary, Sachs, Sheldon, Sheldon Brown, sheldonbrown, sheldonbrown.com, Sturmey-Archer
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Skid patch counts
Correction to formula and additional info including a calculation spreadsheet for the number of skid patches on the rear tire from skip-stop braking on a fixed-gear bicycle.
Posted in Updates
Tagged bicycle, brake, fixed gear, Sheldon, Sheldon Brown, sheldonbrown, sheldonbrown.com, skid patch, tires, tyres
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SRAM G8 Hub
New article about the SRAM G8 8-speed internal hub gear — all you need to know to install this hub: specifications, gear ratios, parts compatibility and availability, how the mechanism works. As far as we know, this is the one … Continue reading
Posted in Updates
Tagged 8-speed, bicycle, g8, gearing, gears, hub, internal, internal-gear, Sheldon, Sheldon Brown, sheldonbrown, sheldonbrown.com, shifter, SRAM
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Unthreaded bottom bracket dimensions
New cribsheet page with dimensions of unthreaded bottom brackets, and compatibility information.
Posted in Updates
Tagged Ashtabula, axle, BB30, BB90, bicycle, bottom bracket, cartridge, diameter, eccentric, FSA, Klein, Merlin, millimeters, mm, PF30, Race Face, Raceface, Sheldon, Sheldon Brown, sheldonbrown, sheldonbrown.com, shimano, Thomson, Thun, unthreaded, Velo Orange
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Leather saddle update
Major additions to our page on leather saddles — descriptions and photos of different Brooks saddle models, comments on other brands, lots more advice on adjustments and leather care.
Posted in Updates
Tagged 17, b66, b72, beeswax, berthoud, bicycle, Brooks, copper, foot, gilles, Idéale, leather, Lepper, Lexol, neat, oil, Pro, professional b17, Proofide, Rivet, saddle, saddle soap, saddles, seat, selle anatomica, Sheldon, Sheldon Brown, sheldonbrown, sheldonbrown.com, Swallow, Swift, team, tension, Velo Orange
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8-speed Shimano hubs — update
We have updated our page on Shimano 8-speed hubs. Shimano changed a number of links and posted some new information.
Posted in Updates
Tagged 8-speed, Alfine, gearing, gears, internal, internal-gear, Nexus, Sheldon, Sheldon Brown, sheldonbrown, sheldonbrown.com, shimano
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How the i-Motion 9 hub works
New section on how the SRAM i-Motion 9 hub works in the article about that hub.
Posted in Updates
Tagged 9-speed, bicycle, hub, i-Motion 9, internal-gear, Sheldon, Sheldon Brown, sheldonbrown, sheldonbrown.com, SRAM
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New article and paper by Osman Isvan
New article by Osman Isvan introducing and summarizing his series of technical papers about bicycling propulsion, wind, hills and measurement techniques. And a new paper about measurement, too.
Posted in New pages, Updates
Tagged aerodynamics, bicycle, climb, climbing, gearing, hills, Isvan, Osman, Osman Isvan, propulsion, Sheldon, Sheldon Brown, sheldonbrown, sheldonbrown.com, wind
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