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Marginal Gains Cycling Podcast, Presented by Silca: Daily Summaries Delivered
by SILCA
The Marginal Gains Podcast, presented by Silca is the show that makes a big deal about the little things, and how those little things...can be a big deal. Josh Poertner of Silca, along with Hottie and Fatty, talk about all aspects of cycling — design, manufacturing, marketing, riding, racing, management and more, all from a thoughtful perspective. It's a podcast for the thinking cyclist.
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- Yesterday1h 0m
Paige Onweller - Details Matter
While listening to Paige Onweller answer our questions, we found ourselves wishing we could be more like her. Wishing we her organizational skills, of her critical thinking, her ability to adapt quickly. Paige has the foundational pieces to be a Marginal Gainer that makes us think, "I wish I was more like Paige." Paige's focus on details started well before she ever saw a Gravel Race start line. She was a collegiate runner and after that, had a career in medicine. But like we've heard from many runners, her sport led to injury which led her to the bike. At first, her riding was for fitness while she healed. But then she discovered how good she was, and so did others. Namely team Twenty-Twenty Four. They brought her on board to do Zwift racing and Time Trials. Before she knew it she was on a start line in Nebraska at Gravel Worlds. Then her career in medicine was put on hold as Paige took her detailed approach to the Life Time Grand Prix. Josh and Paige's partnership started this spring in the wind tunnel. The two of them got together for a focused approach on aerodynamics and women. They made some very interesting discoveries which we talk about in this show. Ever thought about waxing hair? You will after hearing them discuss Paige's aero bun.
- 3 weeks ago54 min
AJA #51 Road Spray Aerodynamics and Argon Gas in Tires
Josh sinks his teeth into questions on turning road spray on a frame into aerodynamic information, Argon gas in tires and deep, carbon wheels for XC mountain bike racing. We also talk about Fatty's successful Everest challenge – the Marginal Gains that worked and the ones that didn't. And we get into some new happenings with Silca.
- Jun 8, 202651 min
Rolling Resistance Testing with John Karrasch
A favorite topic on the Marginal Gains Podcast is rolling resistance, also known as CRR. It is one of the cornerstones of this show. While we have interviewed aerodynamic experts who have devoted hundreds of hours to CdA, we have found very few who have made CRR their passion. Tom Anhalt was an early guest but we can't think of another since. That changes with this episode. John Karrasch makes a living from bike fittings. But John has made a name for himself through his tire testing. Using the Chung method, John has been putting tires to the test to see which ones live up to the hype. In just more than a year, he has amassed an impressive database covering just about every brand you can name. The beauty of John's work and results is he shares it with all of us at no cost. In this interview, John shares his early beginnings with the Chung method, how he has refined his testing, and what some of the key learnings have been. The only thing between your bike and the surface you ride are your tires. John is one of a few who has been trying to quantify just how much power it takes to keep those tires rolling.
- May 26, 202632 min
Inflatable Inserts and Radial Tires
It's funny how tubeless freed is from tubes and years later some of us turned to putting something else in the space between rim and tire. Namely inserts. Most of them are foam and a real struggle to install. Then there's OPTIS: The Odyssey Tire Pneumatic Insert System. Cool acronym that basically means "inflatable insert." The people at Odyssey will be quick to say OPTIS is not a tube. While it does press up against the sidewall when inflated, it's job is just like a foam insert: to prevent pinch flights. OPTIS weights significantly less than a foam insert and it's behavior is adjustable. We spoke with Jacob Hinton from Odyssey on this unique product that recently gained notoriety during a spring classic. Up next is a look at radial tires for bikes. 32 inch wheels have garnered most of the buzz in 2026 but radial tires are also making waves. Two big tire makers have jumped into the space and made claims of enhanced grip for gravity style riding. A third company, Delium, has also been developing radial tires. We hear from this lesser known maker about how tech works and its potential in the bike space.
- May 11, 202657 min
AJA #50 Inserts-Optimal gears-Narrow Bars
Our 50th Ask Josh Anything! That's a lot of questions and answers and "It Depends." Thanks for hanging with us to the mid century mark. On the Q&A agenda this episode: The perfect padding for aero armrests. Tire inserst for Unbound Breaking in tires for best CRR The right gears for an Everesting Narrow flat bars for Leadville Gravel wheels on a road bike and the rule of 105
- Apr 30, 202641 min
Sea Otter Pt. 2 - Big Wheels Keep on Rollin'
Our first episode that covered the topic of 32 inch wheels focused on the bigger wheels being used on mountain bikes. Daniel Yang of Neuhaus Metalworks put us on a prototype rigid mountain bike and took us for a ride. It was eye opening. But it also raised questions. At Sea Otter we saw a shift by some builders and manufacturers as to where they thought the big wheels might perform best. Drop Bar bikes supported by 32 inch wheels were just as common as Flat Bars at this year's show. Straight line speed and all day comfort was the reason given for developing a 32er gravel bike over a mountain bike. Like a lot of bike media, we set out to get some answers on the future of this "Big Idea." Daniel Yang is back with his report card on the trend. We also hear from two companies that were showing Gravel bikes that attempt to answer the question: Is bigger, better?
- Apr 22, 20261h 4m
Sea Otter Pt. 1 - Hooked on Road Wheels
We're not afraid to share an opinion on this show. At no time was that more apparent then when Josh let his thoughts known about hookless road wheels. It caused a bit of a reaction in the industry to say the least. And while we have some firm beliefs on certain technologies, we also believe in fairness. Which is why at Sea Otter we gave some wheel brands a platform to explain what has become a somewhat divisive topic. Our guests work for three brands: ENVE, CADEX and Mavic. Two of them stand behind road hookless as a high performance and safe feature. The third has stuck with hooked rims. All three bring a unique perspective on what it takes to secure a tire to a wheel. We also talk to these wheel makers about their brands as a whole: what's driving innovation, how pro peloton success turns into sales and for one of them, what it takes to revive a heritage brand.
- Apr 14, 20261h 5m
From Bike Magazines to YouTube with Ben Delaney
It feels like now more than ever it is important to find sources of information and reporting that are trustworthy. It used to be fairly easy: subscribe to a credible outlet and trust that said newspaper or magazine would have guardrails in place to get it right and to exercise fairness. As the internet and social media became the predominant sources we rely on, a lot of those guardrails were knocked down. It could be argued that the system in place now is more democratic. More wide open. More voices. But along the way the trust factor has taken a blow. That's why we wanted to talk to Ben Delaney. Ben came from the old school ways of cycling reporting. He got a degree in journalism. He got a job at a magazine. He did the work and made his way up. Like a lot of his colleagues, he also took his lumps as traditional outlets succumbed to the pressures of lower ad revenues and tighter budgets. After being let go more than once by Velo, Ben decided to go solo. These days you can find Ben making videos for his gravel focused "The Ride" YouTube channel. It's one of Josh's favorites, so much so that Silca supports the channel. "The Ride" is a great place to check the latest in dropbar, offroad tech and trends. But this interview is less about gear and much more about the landscape of cycling media. How it got to where it is and what it needs to keep its credibility.
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About Marginal Gains Cycling Podcast, Presented by Silca
The Marginal Gains Podcast, presented by Silca is the show that makes a big deal about the little things, and how those little things...can be a big deal. Josh Poertner of Silca, along with Hottie and Fatty, talk about all aspects of cycling — design, manufacturing, marketing, riding, racing, management and more, all from a thoughtful perspective. It's a podcast for the thinking cyclist.
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