Lennard Zinn

Differences between chain lines of Campagnolo, Shimano, and SRAM disc brake setups.

Space for disc brake rotors, gearing combinations, and chain line considerations for Shimano and SRAM drivetrains.

Swapping stems, handlebars, and spacers for more comfort on your bike.

Considerations for adapting stack and reach when loss of flexibility becomes a consideration.

Do weights of tires factor into the amount of energy required to turn them, and discussions of what causes front-end shimmy.

Cycling wheel and tire experts offer opinions about and insights into tire testing.

VeloNews technical expert examines brand cross-compatibility of brakes and drivetrain components.

A real-world example of how rolling resistance impacts effort, and duration, over a 200-mile gravel ride.

A discussion of tire rolling resistance testing methods and protocols.

We tested on a rough lab surface at pressures from 22-87psi, and investigated various construction methods, puncture protection strategies, and the tradeoffs of tread patterns.

More tips for mounting tubeless tires on tubeless wheels.

How to mix and match braking components across brands, and why Shimano does not offer a 10-tooth cog for new groups.

How to size tires to rims and more discussion about tire hysteresis and aerodynamic drag.

More analysis of tire pressure and rolling resistance at the ‘Hell of the North,’ and tubeless tires removal and installation.

The finish order of the riders in the Hell of the North mirrored the finish order of their tires in our rolling resistance test.

Optimal rim/tire combination widths, rolling resistance, and tire-wear questions answered.

Simple tips and clever tricks for getting stubborn tubeless tires mounted on rims.

Technical expert Lennard Zinn offers tips and tricks for mounting tubeless tires.

What causes tires to absorb more or less of a rider’s energy?

We sent clinchers, tubeless tires, and tubulars to Wheel Energy for rolling-resistance tests at range of air pressures. The results surprised us.