Rusty Chains, Tyre Size & Aliexpress Seatpost | GCN Tech Clinic

Ollie and Alex are back in the GCN Tech Clinic to answer your burning questions about bike maintenance and technology! This week, we dive into whether unbranded carbon parts from AliExpress are actually safe to ride and why your 28mm tires might not actually measure 28mm once they're on your wheels. Plus, we discuss the best first upgrade for a new bike, the truth about bleeding your brakes, and how to solve recurring punctures. Chapters: ⏱️ 00:00 - Welcome to the GCN Tech Clinic 00:26 - Why Do Tires Measure Differently? 02:17 - The Best Upgrade For A New Bike 03:06 - Bike vs. Car Brake Bleeding 04:40 - Solving Rim Brake Alignment Issues 05:18 - Can You Save A Rusty Chain? 06:26 - Are AliExpress Carbon Parts Safe? 08:39 - Solving Recurring Punctures Useful Links: GCN Tech Uploader 👉 https://gcn.eu/techuploader Subscribe so you don’t miss a thing 👉 https://gcntech.co/subscribe Insurance: Viewers in the USA and UK can explore GCN Insurance products 👉 https://gcn.eu/GCNinsurance Sign Up To The GCN Newsletter 👉 https://gcn.eu/Newsletter Visit the GCN Shop 👉 https://gcn.eu/gcnshop GCN WhatsApp Channel 👉 https://gcn.eu/GCNwhatsapp GCN Instagram Broadcast Channel 👉 https://gcn.eu/instagrambroadcast Join the GCN Club on Zwift and ride with us! 👉 https://gcn.eu/GCNClubRides Would you trust an unbranded carbon seatpost from AliExpress to save a few grams, or is the risk of a snap just not worth it? Let us know your experiences with budget carbon parts in the comments below! 👇 Watch more on GCN Tech... 📹 https://youtu.be/s1LV-a9I9Jo 📹 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 📸 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 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! Thanks to our sponsors: Canyon Bikes: http://gcn.eu/-Canyon Orbea Bikes: http://gcn.eu/Orbea Pinarello Bikes: https://gcn.eu/Pinarello Topeak Tools: http://gcn.eu/Topeak CamelBak: https://gcn.eu/Camelbak Pirelli Tyres: https://gcn.eu/Pirelli Vision Wheels: http://gcn.eu/Vision Wahoo Fitness: http://gcn.eu/Wahoo-Fitness Park Tool: http://gcn.eu/-parktool Selle Italia: https://gcn.eu/SelleItalia Zwift: https://gcn.eu/Zwift Silca: https://gcn.eu/Silca MET Helmets: https://gcn.eu/methelmets Core Body Temperature: https://gcn.eu/corebodytemp Precision Fuel & Hydration: https://gcn.eu/precisionhydration Elitewheels: https://gcn.eu/Elitewheels CeramicSpeed: https://gcn.eu/GCNCeramicSpeed Watch our sister channels: Global Cycling Network - https://www.youtube.com/@gcn GCN Racing - https://www.youtube.com/@gcnracing Global Triathlon Network - https://www.youtube.com/@gtn GCN Italia - https://www.youtube.com/@gcnitalia GCN en Español - https://www.youtube.com/@gcnenespanol GCN auf Deutsch - https://www.youtube.com/@gcnaufdeutsch GCN en Français - https://www.youtube.com/@gcnenfrancais GCN Training - https://www.youtube.com/@GCNTraining Global Mountain Bike Network - https://youtube.com/@gmbn GMBN Racing - https://youtube.com/@gmbnracing GMBN Tech - https://www.youtube.com/@gmbntech Electric Mountain Bike Network - https://www.youtube.com/@embn