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Author Archives: John
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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Kryptonite history
Just posted — an article on the invention and early history of the Kryptonite bicycle lock — including numerous illustrations, and interviews with Stan Kaplan, the inventor, and Michael Zane, who commercialized the product.
Posted in New pages
Tagged bicycle, Kaplan, Kryptonite, lock, Michael Zane, patent, security, Sheldon, Sheldon Brown, sheldonbrown, sheldonbrown.com, Stan Kaplan, theft, U-lock, Zane
1 Comment
ShelBroCo Dent Removal System
A prized, classic steel bicycle frame with butted tubing (thick-walled at the ends for strength, thin-walled in the middle for light weight) is easily dented, but ShelBroCo has a fix — it’s quick, effective and easy to use! http://sheldonbrown.com/dent-removal.html
Posted in New pages
Tagged bicycle, dent, dent removal, humor, repair, shelbroco, Sheldon, Sheldon Brown, sheldonbrown, sheldonbrown.com
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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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Biopace chainrings
We like Shimano Biopace non-round chainrings, and they are reliably available on eBay. We have expanded our article on how to choose and use them.
Posted in Updates
Tagged bicycle, BioPace, cadence, chain, chainrings, chainwheels, non-round, oval, pedaling, Sheldon, Sheldon Brown, sheldonbrown, sheldonbrown.com, shimano
2 Comments
Sturmey-Archer indicator spindles
John has compiled an article with dimensions of most kinds of Sturmey-Archer indicator spindle — the little rod and chain which the shifter cable pulls to shift the gears inside the hub. There are over a dozen different indicator spindles, … Continue reading
Posted in Updates
Tagged 3-speed, 4-speed, 5-speed, 8-speed, AW, axle, bicycle, bowden cable, chain, flared nut, hub, indicator, indicator spindle, internal, internal-gear, maintenance, planetary, S5, shelbroco, Sheldon, Sheldon Brown, sheldonbrown, sheldonbrown.com, Sturmey-Archer
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