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Tag Archives: bicycle
SunTour freewheel page covers more models
The SunTour freewheel page now covers Winner Pro, Winner and Alpha models in addition to Perfect, Pro Compe and New Winner.
Addition to bolt-circle coverage
Campagnolo has come up with another new chainring bolt pattern (why?) and we have added it to our coverage. It’s the most complete you’ll find anywhere. Print out the template that corresponds to the kind of bolt pattern of your … Continue reading
Posted in Updates
Tagged BCD, bicycle, bolt circle, bolt circle diameter, chainring, chainwheel, crank, crankset, diameter, stack bolts
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Remembering Sheldon
Sheldon Brown would have been 77 years old today. We miss him very much. In this picture his big brother Richard is reading to him. And at the right is the cover of the book Richard was reading. “Run, run … Continue reading
Posted in Updates
Tagged bicycle, computer, graphics, memorial, Sheldon, Sheldon Brown, sheldonbrown, sheldonbrown.com
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Cable installation
John added photos and a quite a lot of additional information to our page about cables, and the page got too long — so we have split it into two pages. The original cables page now includes more background information … Continue reading
Posted in Updates
Tagged adapter, bicycle, bowden cable, cable, Campagnolo, gearing, Jtek, Microtech, pulley, Sheldon, Sheldon Brown, sheldonbrown, sheldonbrown.com, shifter, shimano, SRAM
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First cyclecomputer?
Our cyclecomputer database goes deep. We have found, scanned and posted a PDF of the manual for what is probably the first cyclecomputer, the Veltec Pacer 2000. We also have manuals for early Cateye, Avocet and Vetta computers, and rare … Continue reading
Posted in Updates
Tagged bicycle, computer, cyclecomputer, GPS, Pacer 2000, shelbroco, Sheldon, Sheldon Brown, sheldonbrown, sheldonbrown.com, Veltec
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On-Road Repairs update
We have added to our page about on-road repairs. There is now a quick list so you can check which particular tools you might need for your bicycle, and we have covered some additional tools. The basic on-road repairs will … Continue reading
Posted in Updates
Tagged bicycle, maintenance, repair, rim, Sheldon, Sheldon Brown, sheldonbrown, sheldonbrown.com, tires, tools, wheel
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Derailer adjustment — and maintenance
We have added new sections on derailer maintenance to the derailer adjustment page, including how to cannibalize rear derailers, being careful about compatibility, and how to check cables,
Posted in Updates
Tagged adjustment, bicycle, derailer, derailleur, front, rear
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Modeling bicycle dynamics
We publish another paper by Osman Isvan. He uses a simplified model with only 3 degrees of freedom and simulates system frequency response under steady-state and transient conditions. He investigates the effects on vibration isolation of several key parameters including … Continue reading
Posted in Updates
Tagged bicycle, cyclecomputer, data, energy, Garmin, GPS, Isvan, Osman, Osman Isvan, Power meter, resonance, Sheldon, Sheldon Brown, sheldonbrown, sheldonbrown.com, speed
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Extensive revision of chainwheel bolt-circle information
A few months ago, a reader prompted us to make some updates to our chainwheel bolt circle cribsheet. But now we have followed up on that effort, greatly expanding our coverage, and we have added a set of templates which … Continue reading
Posted in Updates
Tagged BCD, bicycle, bolt circle, bolt circle diameter, chainring, chainwheel, crank, crankset, diameter, stack bolts
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Update to Bolt Circle Diameter Cribsheet
We have reviewed the bolt circle diameter cribsheet, checked bolt-hole spacings using trigonometry and made some corrections. Apparently, the spacings were measured rather than calculated based on angles — and measurement is never exact! We have also added entries for … Continue reading
Posted in Updates
Tagged BCD, bicycle, bolt circle, bolt circle diameter, chainring, chainwheel, crank, crankset, diameter, stack bolts
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