

Marginal Gains Cycling Podcast, Presented by Silca
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.
Episodes
Mentioned books

Sep 24, 2024 • 60min
Paralympic Track Racer Bryan Larsen: Excelling after Injury
Bryan Larsen tells us his only real talent is that he's too dumb to quit. We strongly disagree, but take his point: Bryan is no quitter. In this episode, Bryan talks us through how he took the constraints given to him through birth and accident, and used passion, perseverence, and a love of marginal gains to reinvent his racing career.

Aug 5, 2024 • 52min
AJA 35: Hookless rims & PSI limits, tire pressure on worn tires, Ti quicklinks, CRR on wet roads
We're so excited to kick this 35th episode of our "Ask Josh Anything" series with a discussion of the announcement of Silca's partnership with Visma Lease-A-Bike. Fatty does his level best to pitch having Hottie in the team car, hot-waxing on the move. We move from there to the challenges of high pressure with hookless rims, and how it has put Josh in the position of being the PSI bartender and cutting pressure-thirsty riders off. And that's just for starters. We also get into group ride marginal gains, changing pressure prescriptions for worn tires, whether 3D-printed Ti quicklinks should be a thing, the likely aero effects of Tadej's six-figure watch, and more. Enjoy this packed episode of Marginal Gains!

Jul 5, 2024 • 49min
Amy Charity and SBT GRVL
Amy Charity, founder of SBT GRVL and former pro roadie, discusses the growth of gravel racing and her transition from finance to cycling. The podcast covers the origins of SBT GRVL, challenges of event organization, mentorship cultures in different countries, and the unique aspects of gravel cycling events. Additionally, it compares American and European cycling event cultures, highlighting the inclusive nature and business strategies of gravel events.

Jun 3, 2024 • 56min
AJA 34: Wind tunnels, cargo bibs, ti printing, and axle handles
At this point we've lost track on how many episodes we've dedicated to wind tunnels, but this is at least partially one of them. We've also got great questions about Fatty's new Firefly and the Ti-printed parts Silca created for it, a classic question on the best body position for riding in a strong tailwind, axle handle alignment, and a remarkably well-considered question on calculating tire pressure for full-suspension bikes.

May 21, 2024 • 57min
Erwin Vervecken and the UCI Global Gravel Series
Gravel Racing has gone global, and governing bodies have gotten involved. The UCI is now in its third year of putting on its Gravel World Series. It has more than two dozen races on four continents. Instead of running the series itself, the UCI has turn to a sports group and the point person in that group is three-time Cyclocross World Champ Erwin Vervecken. It's an understatement to say he knows drop bars and dirt. He is. We talk to Erwin about how the series began, the lack of a major presence in the US, how to get into Worlds, UCI rules and Gravel, and we throw in some Cross questions.

Apr 11, 2024 • 43min
Time's Tony Karklins and Josh Talk Bike Shops and Carbon Manufacturing
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.

Mar 27, 2024 • 58min
John Cobb-Wind Tunnel Pioneer
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

Mar 13, 2024 • 60min
Kimo Seymour and the Life Time Grand Prix
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.

Feb 23, 2024 • 50min
AJA #33: Wind Tunnels and Wax
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!

Jan 23, 2024 • 59min
Ask Josh Some More About Wind Tunnels (Wind Tunnels Series Part 3)
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 fascination with wind tunnels, well...we'll do a trifecta of episodes on that, too. Enjoy the show!