Author Archives: John

Shimmy, or speed wobble

A new article on shimmy, or speed wobble — what it is, why it happens, how to prevent it and how to recover from it.

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More tire-sizing updates : added more info on “27 five” tires, and a photo (thanks to Aaron Goss!). : added several tire sizes

Posted in Updates | Leave a comment’s angle on the Trek quick-release recall’s angle on the Trek quick-release recall. This addresses technical issues which we haven’t seen covered in news reports.

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Update to the page on 26-inch tires

Update to the page on “26-inch” tires — there are actually 5 common tire sizes called 26-inch and if that isn’t enough one is also called “27.5” The updates cover new developments in availability, naming and tire widths.

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New tire sizes in Gear Calculator

Several tire sizes have been added to the Gear Calculator: Fatbike sizes: 26 inch tires, 26 x 3.8, 4.0, 4.25, 4.7 Wide 29ers: 29 x 2.7 and 3.0 32 inch and 36 inch (common on unicycles).

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ShelBroCo Magic Green Paint

Here’s a high-tech product which deserves to be used in every new bicycle infrastructure project. The linked page gives a thorough description and videos!

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Chirridos, Crujidos y Chasquidos…Creaks, Clicks & Clunks

Ahora también en español: Chirridos, Crujidos y Chasquidos… ¿Tu bici hace ruidos extraños cuando montas? ¡Este artículo intentará ayudarte a hacer que se calle! Traduccción de Pablo Zumárraga. And also revised in English: Creaks, Clicks & Clunks… Does your bike … Continue reading

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Postings from Carapace Completed Umber

Need a bit of fun to brighten up a cold winter day? Give this a try: Postings from Carapace Completed Umber. .

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Added information on headsets on the Raleigh Twenty page

You can use a threadless headset with the Twenty’s threaded front fork!

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Ajuste de conos

Thanks to Pablo Zumárraga, the article on “Cone Adjustment” ( is now available in Spanish: “Ajuste de Conos” ( Gracias á Pablo Zumárraga, el artí­culo “Cone Adjustment” ( ahora está disponible en español: “Ajuste de Conos” (

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