Why don't road and MTB handlebars have the same grip diameter? In this week's Technical FAQ, Lennard explains the logical reason behind this fact. Also, a reader wonders how ultrasound is used to check carbon for damage.
Lennard Zinn builds extra large bikes for extra large people. In this At the Back column from 2009, he recounts building a custom bike for Bill Cartwright, head coach of the Chicago Bulls.