Tag Archives: sheldonbrown

Remembering Sheldon

Posted on December 19, 2021 by John

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 →

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Cable installation

Posted on December 3, 2021 by John

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 →

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First cyclecomputer?

Posted on July 8, 2021 by John

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 →

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We are here!

Posted on June 14, 2021 by John

Ah, the hand-wringing. It seems to have started with someone  at the road.cc blog who inquired on our Facebook page, then posted on without waiting for our response. Harris Cyclery has closed after a 70-year run, hit hard by pandemic … Continue reading →

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On-Road Repairs update

Posted on April 25, 2021 by John

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 →

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ShelBroCo Quadratech

Posted on March 31, 2021 by John

Introducing ShelBroCo QuadraTech Chainrings and sleeve nuts. Throw away those obsolete chainrings! The unbearably vexing problem of sleeve-nut rotation has bedeviled generations of bicycle mechanics. Who else would you expect to come up with a solution but ShelBroCo?

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Modeling bicycle dynamics

Posted on January 12, 2021 by John

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 →

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Osman Isvan on Hills, Winds — and Data

Posted on June 5, 2020 by John

Osman Isvan takes a deeper look into hills and winds. Do you (or should you) work harder when climbing a hill? How hard do you (or should you) work on a given hill? Does it depend on your gearing? The … Continue reading →

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Osman Isvan on Ride Data

Posted on May 3, 2020 by John

Osman analyzes data from over 1000 of his own bicycle rides to see what they show, and describes what might be discovered by mining the huge troves of data held by Strava, RidewithGPS and other GPS-based mapping services. Osman makes … Continue reading →

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No joke

Posted on March 31, 2020 by John

It is traditional for sheldonbrown.com to post an April Fool’s day page, but this year we couldn’t think of one that wasn’t either frivolous or, if it addresses the present situation, dark humor and potentially offensive to people who have … Continue reading →

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