Tag Archives: chainwheel

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

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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

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Chain and sprocket wear

New post on bicycle chain and sprocket wear

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If the chain falls off or jams

New article on how to prevent chain incidents and how to recover from them. Did you know that you can re-engage a dropped chain without getting your hands dirty?

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