Tony Karklins is the founder of Allied Cycle, is currently the founder of Time, and has deep knowledge of all aspects of the cycling industry, all the way back to when as a teenager he owned a bike shop. He's the perfect match for a conversation with Josh about bike business, manufacturing, racing and more. 

John Cobb may be best known for his bike saddles, but his experience and innovation go much deeper. John may be the first person to take a bike to the wind tunnel, and is likely the only person to crank up the tunnel to 70mph...with a rider in it. Enjoy this great episode with a cycling innovator

Life Time puts on what is arguably the biggest and most important pro bike racing series in the US: The Life Time Grand Prix. And one man is in chage of it all: Kimo Seymour. Fatty and Hottie talk with Kimo changes in the race, the "Call of a Life Time" series, aerobars, Keegan's Swenson's chances for dominating the event for a third year running, and much more. 

Our recent wind tunnel episodes have triggered a LOT of aero questions from our listeners, and Josh -- with hand hovering over the "It Depends" button -- takes them on. From IRL Burrito Powerups (IYKYK) to the StripChip and the Chain Waxing System to aero chainrings to leg hair stubble as a potential aero advantage to shoe aerodynamics, Josh will — apparently — answer anything. Enjoy!

Josh answers more of Fatty & Hottie's pressing questions about the surprises people are in for when visiting a wind tunnel for the first time, what happens when key learnings from a wind tunnel session are ignored, how often follow-up questions triggered by a wind tunnel session are actually followed up on, whether it's worth it to bring anyone but a top-pro into the wind tunnel, how bike companies twist wind tunnel results, and much more. If there's anything more Marginal-Gain-y than our...

An argument can be made that Mark Cote is the father of the Specialized Wind Tunnel. During his tenure at the Big S, he convinced the powers that be that the Big S needed its own wind tunnel — an amazing story Mark shares with Josh. Enjoy this deep dive into Mark's backstory and conversation between Mark and Josh as they swap stories on how they've found marginal gains with this one powerful tool

Josh's experiences in wind tunnels have come up in dozens of episodes of Marginal Gains, and we always find ourselves with more questions. In this episode, we're finally giving ourselves permission to ask them, from the essentials of using a wind tunnel to a day in the life before, during, and after testing in a windtunnel.  Look, we'll be honest here: we brought way more questions to this conversation than Josh had time to answer, and at some point during the recording, we realized we...

When it comes to bikes, Josh is usually the smartest person in the room. But Josh will tell you, when the topic turns to mountain bikes and suspension, Josh turns to Darren Murphy of Push Industries. Josh and Darren talk about Darren's journey in the industry, as well as a dive into how advanced bike products are developed, tested and brought to market. 

With World Cup races being decided by tenths or even hundredths of a second, many racers and teams are now using sensors and data acquisition to dial their setups. Our guest this show is a leader in this area: Nick Lester and Josh get deep into how Nick and his Downamics team help the world's fastest downhillers get the most out of their suspension.

Would your motorcycle chain benefit from an afternoon in the chain wax spa? If you use a gel packet as an improvised tire boot, how much will it affect your bike's performance? When using the Rule of 105, should you be using the rim width at the brake track, or the widest point of the rim as your measurement? And for those of us carrying lunch, clothes, and a computer to the office as we commute by bike, how can we be more aero? Josh bravely answers all these questions...and for one of them,...

Aerocoach's business is to help athletes improve their aerodynamic performance, through testing, coaching, and equipment. Josh and Xavier Disley get into a wide-ranging discussion of aerosensors, hype vs data, the need for wind tunnel standards, and so much more. This is an in-the-weeds episode you Marginal Gainer supernerds will not want to miss. NOTE: A prior version of this episode gets cut off partway through the episode. If it shows in your podcast feed, please skip it and listen to...

Russ Roca  - founder and host of the YouTube Channel the Path Less Pedaled - is our guest. The Path Less Pedaled has become a place to learn about the non-competitive side of the cycling world . Russ has produced hundreds of videos that focus on using bikes to carry stuff, explore, cruise, travel, ride comfortably and yes he has a couple on chain waxing and finding the right tire pressure. We talk with Russ on how he went from 2-packs a day to two wheels, the search for the right gearing,...

Rob Britton is an accomplished pro road cyclist who has  turned  to the off-road scene in the second half of his career. He’s been doing the Lifetime Grand Prix and other mass start events but he is also taking on ultra endurance challenges. This summer it was an event called Badlands:  Longer than Unbound XL, more climbing than an Everest Challenge and a landscape that blows the mind. Rob takes us through the unique challenges to body and bike this race presented. He talks about trying to...

Josh, Hottie, and Fatty take on your questions in this, our 101st episode of the Marginal Gains Podcast (we forgot to check that we hit 100 episodes -- and 1,000,000 listens -- last time). From contemplating the aerodynamic benefits of chain guards to analyzing terrifying moments of physics in action when riding a high speed descent, to raising our collective eyebrows at the new 750d wheel size, we continue to give credence that we will take on any cycling question and boldly answer, "it...

Industry legends Dave Koesel and Stephen Doll join Josh for a discussion about the Stromm track bike, a frame and fork aiming to take advantage of recent UCI tube shape restrictions being lifted. If you love wind tunnels, marginal gains, and engineers getting into the weeds with other engineers (and let's face it, we know you love all these things), this is the episode for you.

If you think the stories you've heard about the 2023 Unbound are crazy, wait 'til you hear Kristen Legan's story of her XL win. She focused on this race this year, and her preparation and dedication will resonate with any endurance Margingal Gainer. Kristen's joined in this episode by Nick Legan: author of the popular book Gravel Cycling, Unbound vet, top-tier mechanic, and Road Brand Manager with Shimano. Enjoy this is deep dive into bike setup, mental marginal gains and thick, sticky mud.

We take our mission of making a big deal about the little things very seriously in this episode, where we talk about whether there's any actual basis for the superstition behind where you rotate the wheel to before inflating a tire. We then move to the admittedly more pragmatic questions of how much of a draft an aero rider provides to the riders behind them, the low-hanging gains for DH racing, and the problems with racing a 1X setup on the road. And that's not even remotely close to all...

For Silca’s E-commerce manager, Travis  Verhoff, the 2023 edition of Unbound has been a bit of an ongoing science project. In this episode of Marginal Gains, we dig into Travis' expectations, last-minute changes, and key learnings from this experiment...and after all is said and done, what he would change and whether he'd ever race this monster again.

You've no doubt heard Josh mention Slowtwitch.com many times on this show.  It's one of the key places he goes to share ideas and get feedback. But Slowtwitch is more than just a place. It’s a person too. The site was founded by Dan Empfield in 1999, and remains publisher to this day.  But before Slowtwitch even existed, Dan was a competitor. He did his first Triathlon in 1978 and competed in the first Ironman Kona in 1981. You may also know Dan as the man behind Quintana Roo. That stack and...

It's an Ask Josh Anything episode! We talk about The Rule of 105, the extent to which "bigger is better" is true for fairings, whether tire inserts need to be factored in when using air pressure calculators, why you might get conflicting recommendations from different air pressure calculators, how many watts a slow-turning old derailleur cog might cost you, the challenges a hot day might bring to your waxed chain, and more. So much more. Some people might say too much more, but we are not...

Silca's own Travis Verhoff has an unusual work assignment: plan, train for, and execute the most Marginal Gain-y Unbound possible. If you've been following the Silca YouTube channel, you've been tracking his progress. In this episode, we catch up with his bike setup, key learnings and surprises from time in the wind tunnel, using the Chung method on course to select tire pressure just days before the race, his nutrition, and a lot more. If you're a nerd about Marginal Gains (and we know you...

Amanda Nauman has one of the most disarming nicknames in all of cycling: she is affectionately known as Panda. But make no mistake: behind the woman named after a docile creature is a fearless person, both on and off the bike. Amanda has taken on the toughest gravel events — and the toughest questions — that face our sport. She has won Unbound Gravel twice and taken 2nd in the 350 XL. She has won Mid South and BWR San Diego and is the 5X-champ at Rock Cobbler in Bakersfield, CA. Amanda is...

Josh and USAC CEO Brendan Quirk share a love of the history of cycling, as well as a deepseated desire to move it forward. In this wide-ranging conversation, Josh and Brendan talk about their love of bike racing, wind tunnels, and the complexities of cycling product development and retailing. Most importantly, they have a candid discussion of the difficult position USAC is in and Brendan's plan to move it forward.

With three Gravel World's Championships, an Unbound victory, an induction into the Gravel Hall of Fame, a bronze medal in UCI Worlds Road Championship TTT, a win in the Tour de San Luis, and more than a decade as a pro, Alison Tetrick has proved she's among the best in the world on pavement and dirt. As it turns out, she's also right at the top in analysis of the current women's pro peloton. In this episode, Ali (as her friends call her) details who to watch this year, talks about the overall...