When should you replace your brake fluid? Is your head unit not connecting to your power meters? How could there be a puncture without a puncture? We answer all these and more in the GCN tech clinic. 00:00 Intro 00:23 Changing hydraulic brake fluid 01:18 Tubeless tyre with TPU tubes 02:15 Smaller front tire and larger rear tire 03:14 Mystery puncture 04:29 Head unit connection problems 05:34 Smaller vs wider inner tubes 06:32 Waxed chain rusting solutions 08:44 Carbon fibre wheel and frame stiffness Useful Links: GCN Tech Uploader 👉 https://gcn.eu/techuploader Everything Cycling. All In One Place 👉 https://www.globalcyclingnetwork.com/ Visit the GCN Shop 👉 null What do you think caused the mystery puncture? 🛞 Let us know in the comments 💬 Watch more on GCN Tech... 📹 How do power meters work? 👉 https://www.youtube.com/watch?v=AK0XRTWPLB0 📹 Watch our Editor’s Choice Playlist 👉 https://gcntech.co/EditorsChoice 📹 Watch the latest GCN Tech Show 👉 https://gcntech.co/GCNTechShow 🎵 Music - licensed by Epidemic Sound 🎵 #gcntech #gcn #cycling #roadcycling #roadbike #bike #bikes #bikelife #biketech #hydraulic #brakesystems #brake #brakeservice #headunit #garmin #carbonbike #carbonfiber #innertube #tpu #chain #bikechain 📸 Photos - © Velo Collection (TDW) / Getty Images & © Sprint Cycling Agency Brought to you by the world’s biggest cycling channel, the Global Cycling Network (GCN), GCN Tech is the only channel you need for all things bike tech – past, present and future. Simply put, we’re obsessed with tech: we seek out and showcase the best in bikes, components, tech, accessories, upgrades and more from races and events, tech shows and product launches across the globe to bring you the best in road bike technology. We’ve also got great maintenance videos to help you get the most from your bike; pro-bike tours from all the biggest races; special features and the weekly GCN Tech Show. We also take a deeper look into the future of cycling, apps, smart tech and virtual riding. Join us on the channel and the GCN App to submit your content, vote on the latest tech and keep abreast of exciting new trends. Thanks to our sponsors: Pinarello Bikes: https://gcn.eu/Pinarello Topeak Tools: http://gcn.eu/Topeak Camelbak: https://gcn.eu/Camelbak Canyon Bikes: http://gcn.eu/-Canyon Pirelli Tyres: https://gcn.eu/Pirelli Orbea Bikes: http://gcn.eu/Orbea Vision Wheels: http://gcn.eu/Vision Wahoo Fitness: http://gcn.eu/Wahoo-Fitness Park Tool: http://gcn.eu/-parktool Whoop Fitness: https://gcn.eu/Whoop Selle Italia: https://gcn.eu/SelleItalia SiS: https://gcn.eu/ScienceInSport Zwift: https://gcn.eu/Zwift Silca: https://gcn.eu/Silca MET Helmets: https://gcn.eu/methelmets Strava: https://gcn.eu/strava ShadowStand: https://gcn.eu/ShadowStand Precision Fuel & Hydration: https://gcn.eu/precisionhydration AGU: https://gcn.eu/AGU Watch our sister channels: Global Cycling Network - null GCN Racing - null Global Triathlon Network - null GCN Italia - null GCN en Español - null GCN auf Deutsch - null GCN en Français - null GCN Training - null Global Mountain Bike Network - null GMBN Racing - null GMBN Tech - null Electric Mountain Bike Network - null