Join the effort to protect public media Protect My Public Media! Sign the petition now to safeguard your local public media stations. bit.ly/450C2uw #ProtectPublicMedia

Tubeless Sealant Refresh and Replacement - How do you know when to add more sealant, and can you instead add some water to keep it going longer without building up the amount of sealant in the tire?open.substack.com/pub/lennardzin…

I just took action to save my local public media stations! Public media is a lifeline for emergency alerts, educational content, and trusted news. If you value it, now’s the time to fight for its future. Email your lawmakers now: bit.ly/3YMxiXB #ProtectMyPublicMedia

Check out this podcast in which we go into just about every conceivable detail related to crank length! Podcast: Are Shorter Cranks Faster? open.substack.com/pub/lennardzin…

How to patch TPU inner tubes and keep them from twisting during installation. And how to make those Di2 buttons easier to push. Di2 Auxiliary Button Hack, TPU Tubes open.substack.com/pub/lennardzin…

Some keys to a happier butt. Saddle Fitting and Comfort (or Discomfort) open.substack.com/pub/lennardzin…

TPU sealant failure, rolling resistance of tubulars, and more. Lots About Tires; a Chain Wax Caution open.substack.com/pub/lennardzin…

If you weigh your bike components, you can also use your scale to check how your sealant level has changed. Silencing Rim Rattles & Checking Sealant Levels open.substack.com/pub/lennardzin…

Lots to unpack about weighting the outside pedal and other weighty subjects. Cornering Traction, Descending Speed, TPU Tubes open.substack.com/pub/lennardzin…

Maybe you can learn some things not to do from my flat tires on my birthday ride. Fixing Repeated Tubeless Flats on the Zinn Fondo open.substack.com/pub/lennardzin…

Are SRAM E1 AXS components compatible with SRAM D1 AXS components?open.substack.com/pub/lennardzin…

Duplicating saddle position when the saddles are not the same open.substack.com/pub/lennardzin…

A skipping chain can be more than a maladjusted derailleur or worn chain or cogs. Investigating Chain Skipping and Shimmy open.substack.com/pub/lennardzin…

Is the rider behind you actually pushing you forward? How do you measure lateral chain wear? Can you wax a chain without removing it from the bike?open.substack.com/pub/lennardzin…

How to prevent seatpost slippage open.substack.com/pub/lennardzin…

Going beyond bike tech, and even e-bike tech, this week. open.substack.com/pub/lennardzin…

Answering some questions about maintenance, charging and longevity of electric cars. Next week, it's back to bikes, I promise! open.substack.com/pub/lennardzin…

Does your SRAM shifter battery need replacement way too often? Or do you have a tubeless tire you can't get off? Short lifespan on SRAM eTap shifter battery; removing a stubborn tubeless tire open.substack.com/pub/lennardzin…

How to calm a shaking bicycle. Bicycle “death wobble” open.substack.com/pub/lennardzin…

More on high-speed shimmy, SRAM shifter batteries, bead breaking open.substack.com/pub/lennardzin…