Articles by Greg Kopecky

We take a detailed look at cassettes and how they have evolved over the years. With new 11-speed systems, has anything really changed? Where is it going?

In the second part of our sealant test, we share our full results for all seven contestants, along with key take-home messages.

Which sealant is the best? Do they perform differently with butyl and latex tubes? Does the size of the puncture matter? We devised a test to find out some answers.

The new generation of indoor trainers have a unique feature – you ride without a rear wheel. What are the advantages and disadvantages of these trainers? Are they the future?

We open up the Mailbag once again to answer questions from our readers. This week covers stack and reach, tire choice, and some curious particulars of race strategy.

We review the Bontrager RL Road shoe, in super bright Visibility color. With carbon soles, light weight, and a micro ratcheting buckle, they offer all of the tech features you expect.

We review the new trainer from SportCrafters, called the Omnium. Intended primarily for travel, this mini pair of rollers folds up into your carry-on luggage or suitcase.

We review the cranks and oval chainrings from Rotor Bike Components after a full season of use. Covering both the Q-Ring and new QXL, we offer tech tips and guidelines.

We review a high tech pair of aluminum wheels from American Classic, the Argent Tubeless. With wide rims, bladed spokes, and feathery weight, they could be just what your tri bike needs.

As we approach 2014, we examine a simple question: Is mechanical shifting still relevant in triathlon? What brands do it right? How do you optimize your existing bike?

We review a unique shoe from Altra, the Provision 1.5. It has two things that seem to elude many brands – zero heel-toe drop and stability features.

We examine bicycle crank arm length and the way it influences gear ratio. Should your chainring and cassette sizes change along with your crank length? Let’s find out.