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Technical Q&A with Lennard Zinn

Substack
lennardzinn.substack.com· weekly· Published 2 days ago

Bicycle engineer Lennard Zinn answers reader questions on bike technology and maintenance, drawing on decades of frame building and riding experience and on racing history. The excerpts cover chain durability, chain wear measurement, and a pacemaker-related cardiac story.

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Platform
Substack
Frequency
Weekly
Latest issue
Oct 26, 2026
Language
English
Written for
Cyclists and bike mechanics who want technical answers to maintenance questions
Tone
practical
Tracked since
Oct 29, 2026

Website: https://lennardzinn.substack.com