Ollie and Alex have been reading your comments and they are ready to answer everyone's pressing tech queries! This week we talk loud hubs vs quiet hubs, does all that hub noise mean a loss in speed? On top of this, the boys discuss whether or not a beard makes you more aerodynamic? What electronic groupset best fits your retro bikes? Should we be cleaning our old tubeless sealant? All this and more, discussed in this week's GCN Tech Clinic. 00:00 Intro 00:29 Ratchet vs Pawl hubs ? 01:19 Should I remove old tubeless sealant? 02:50 Will there ever be sealant free tubeless? 04:30 Is a beard aero? 05:56 How can I get my cleats further back? 07:25 Can I put a Shimano electronic groupset on my retro bike? 09:00 Are noisy hubs slower? 10:10 How can cover unused cable holes on my frame? Useful Links: GCN+ | Every. Unmissable. Moment. 👉 https://gcn.eu/8xS Ride with us at the Global Bike Festival 👉 https://gcn.eu/GBF2023 Download the GCN App for free 👉 https://gcn.eu/app Visit the GCN Shop 👉 null Join the GCN Club 👉 https://gcnclub.com/ GCN Training Plans 👉 https://gcn.eu/gcntp Use #askgcntech in the comments below and let the team know what tech questions are keeping you up at night! 👇 Watch more on GCN Tech... 📹 The latest hot tech from the 2023 UAE Tour 👉 https://www.youtube.com/watch?v=VG2WSz25irM 📹 Watch our Editor’s Choice Playlist 👉 https://gcntech.co/EditorsChoice 📹 Watch the latest GCN Tech Show 👉 https://gcntech.co/GCNTechShow #gcntech #gcn #cycling #roadcycling #roadbike #bike #bikes #bikelife #askgcntech #bikemechanic #homemechanic #procycling #aerodynamic 📸 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: Castelli Clothing: https://gcn.eu/Castelli Giro Helmets: https://gcn.eu/Giro Pinarello Bikes: https://gcn.eu/Pinarello Zipp Wheels: https://gcn.eu/Zipp Topeak Tools: http://gcn.eu/Topeak 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 Elite Bottles: https://gcn.eu/EliteBottles Whoop Fitness: https://gcn.eu/Whoop Komoot: https://gcn.eu/komoot Selle Italia: https://gcn.eu/SelleItalia SIS: https://gcn.eu/ScienceInSport Zwift: https://gcn.eu/Zwift Shimano Wheels: https://gcn.eu/Shimano Shadow Stand: https://gcn.eu/ShadowStand DMT Shoes: https://gcn.eu/DMT Silca: https://gcn.eu/Silca 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 Japan - null GCN Training - null Global Mountain Bike Network - null GMBN Tech - null Electric Mountain Bike Network - null