Archive - Technical Q&A with Lennard Zinn

See you in August!

I’ve embarked on a river trip through Hell’s Canyon on the Snake River along the Idaho/Oregon and Idaho/Washington borders (deepest canyon in North…

Jul 19 •

Investigating Chain Skipping and Shimmy

Sometimes, you can keep riding with a broken chain and not even know it’s broken!

Jul 15 •

Duplicating saddle position when the saddles are not the same

Seat height and setback must change if saddle length and shape differ

Jul 8 •

June 2025

Tire boots, TPU tubes, cornering, parking brakes

Jun 30 •

Fixing Repeated Tubeless Flats on the Zinn Fondo

Also, photos from our staycation

Jun 24 •

See you next week!

Jun 18 •

Cornering Traction, Descending Speed, TPU Tubes

Searching for a reliable TPU inner tube; subtleties of keeping wheels on the ground.

Jun 10 •

Silencing Rim Rattles & Checking Sealant Levels

No Oil, TPU tubes

Jun 2 •

May 2025

Lots About Tires; a Chain Wax Caution

Checking sealant level, rolling resistance of tubulars, talc/cornstarch, TPU tube reliability

May 26 •

Saddle Fitting and Comfort (or Discomfort)

Guidelines for finding the right saddle for you

May 20 •

Di2 Auxiliary Button Hack, TPU Tubes

Patching and Avoiding Twisting of Thermoplastic Urethane (TPU) Inner Tubes

May 12 •

Podcast: Are Shorter Cranks Faster?

Lennard discusses the ups and downs of shorter cranks with Chris Case and Trevor Connor

May 7 •

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