This interview with Adam Kerin serves as the perfect follow up to our previous episode on chains and lubrication. Adam's Zero Friction cycling is hyper-focused on this key piece of drive train and the ways to make it more efficient and last longer. ZFC is the sole, independent voice of chain and lube testing and a marginal gainer at heart. Josh and Adam go deep on how proper chain care can repay the rider in so many ways. 

If you were to rank the hardest working parts on a bicycle, you’d be hard-pressed to find a component that goes through more than the chain. And keeping that chain working well has become a real obsession for Marginal Gainers. So this episode, we dig into chains, lubes, and who should be using what.

2020 has been a rough year for traditional racing, but has brought a surge in interest in Everests and Fastest Known Time (FKT) efforts on well-known courses. And for these solo, pride-of-place FKT attempts, Marginal Gains matter. In this episode, WorldTour-Pro-Roadie-Turned-Gravel-Privateer Pete Stetina nerds out with Josh, Fatty, & Hottie about his preparation for — and execution of — an FKT around the choppy, sandy, rocky, windy White Rim: a perfect MTB century loop in Canyonlands, Utah. Enjoy this episode, and be sure to catch the video of Pete's attempt at https://youtu.be/WeFkg9nwDE8

Before Open Cycles and the now-famous U.P., Gerard and Josh collaborated in Europe with Test Team Cervelo. Like a lot of guests on this show, Gerard Vroomen is an engineer first. He and Phil White took a school project they started in a basement in Montreal and turned into Cervelo Bikes. Against much bigger companies, their bikes not only revolutionized how we thought about frame design but Cervelo went on to win the Tour, the Olympics and Ironman.  Nowadays, Vroomen and Andy Kessler run Open cycles. And the Open U.P. is a bike that has heavily influenced the modern gravel bike. Enjoy this conversation with an innovative engineer who's passionate about the bikes we ride and how to make them better.  

Nobody enjoyed seeing (or hearing about) Chloé Dygert's recent crash, but it was an extraordinary illustration of one of the effects discussed in our most recent episode on Bifurcation. Josh breaks it down (and we all wish her a fast recovery and speedy return to racing). We also discuss UCI frame rules modifications, and how those open the door for changes (some massive, some marginal) in how bikes perform and look.  And of course we take on a slew of awesome listener questions, including: Could Primož Roglič have won the Tour de France if he'd paid more attention to marginal gains? How to accommodate non-bifurcation segments in a race as well as the moment of bifurcation When is Silca going to come out with a pre-treated chain? Robert Chung's maxim on bicycles   

What do aircraft wings, the Tacoma Narrows bridge and Coronavirus modeling all have in common? As you may have guessed from the title, it's bifurcation — just about the least intuitive (or predictable) behavior known to humankind. In this episode, we talk about bifurcation and its relation to all of these — as well as how understanding bifurcation can affect real-world racing...and how the same effect that can tear the wings off a plane can also make for the terrifying speed wobble you may have experienced on a fast descent on your bike.

This is an Engineer's episode if there ever was one. Josh talks to James Woolcock of Bastion cycles, a maker of custom frames, or as the site puts it, "Bespoke Luxury Performance Bicycles." As you would expect, these bikes come with a significant price tag, but there's a lot of custom engineering based on a customer’s wants and needs going into each of their highly unique, high-performance bikes. Even if you're not in the market for an ultra-high-end bike, however, you'll enjoy the conversation between these two marginal gainers with engineering degrees.

The Tour de France is underway, and we've got questions (and answers) about it. For example, do racers REALLY still ride with tires at 120psi as Phil Liggett suggested? (Hint: no.) Why are riders turning their hoods inward? Is tubeless on the verge of replacing tubular as the wheel setup of choice? We've also got a great crop of questions from our listeners, including:  What are the meaningful aero differences between solo and group riding? Is a wheel upgrade worth it when the primary difference is round vs aero spokes? What is the most efficient way to execute your bottom-of-segment turnaround in an Everesting attempt? Got a question you'd like to have answered? Give us a call or text us at 317-343-4506.

Factor is a relatively new name in the industry.  But after just a few years in the marketplace, a leading publication put Factor alongside Giant, Specialized and Cannondale as the next bike to own. And Factor has been brought to prominence by Rob Gitelis. In addition to applying his experience as an engineer to build a really terrific bicycle, Rob has shown incredible instinct to quickly elevate the Factor name. In this conversation, Rob tells Josh how many of the most popular bike products get made.   

Nick Legan is a name anyone with more than a casual interest in cycling has probably come across. Nick was the tech editor at Velo Magazine and Adventure Cyclist Magazine. He is also the author of the book “Gravel Cycling.”  Josh and Nick talk about Gravel riding, bikepacking (not exactly the aero discussion we normally have around these parts but what the heck), Nick's time as a pro bike mechanic in Europe, running a “Service Only” bike shop in Colorado, coaching and what it’s like to oversee one of the most important component brands on the planet.