Loud Hubs, Electronic Groupsets & Old Tubeless Sealant | GCN Tech Clinic

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?

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