Have you experienced certain models of Shimano 12-speed chains rusting more easily than expected? It’s one of many topics in this week’s Geek Warning, the cycling tech podcast from Escape Collective. 

This week, Suvi, Alex, and Dave also discuss limitations and concerns regarding the fast-arriving 32in wheels. There’s talk of new bikes. And what we carry for fixing tubeless punctures. 

Those on our member-only feeds also get access to Ask a Wrench, where this week Colorado-based pro mechanic Colin Williams joins Dave for the first time. 

Happy geeking! 

Time stamps:

• 1:40 - Trek’s new XC bike has been spotted
• 6:40 - Big (32”) wheels continue to gain momentum, but maybe we should pump the brakes? 
• 18:00 -  Basso’s new gravel bike 
• 22:30 - Do 12-speed Shimano chains have a rust issue? 
• 31:00 - Tubeless tyre plugging 
• 42:30 - What we’ve finished working on 
• 45:00 - Ask a Wrench (Member-only, with pro mechanic Colin Williams) 
• 46:00 - When cutting carbon goes wrong 
• 51:00 - Are there short-cuts to setting up SRAM Transmission? 
• 58:40 - Tips for gravel racing in sand 
• 1:04:00 - Specialized FutureShock headset tips