Tech podcast: Explaining why ‘glass transition’ matters for carbon wheels

We speak with Enve Composites's Scott Neilsen about how carbon fiber manufacturing affects bicycle wheel design.

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Welcome to the brand new VeloNews Tech podcast, in which we’ll discuss complex tech topics and distill them down into terms we can all understand.

Have you ever noticed a little “Tg” on your carbon fiber rims? It means “glass transition.” Did that clear things up for you? Of course not.

So, our tech editor Dan Cavallari spoke with Enve Composites’s Scott Neilsen about what this means for bike wheels. Why does glass transition matter? How does this relate to rim durability under heavy braking as well as ride quality? We answer these questions and more.

This episode is brought to you by Pro Bike Gear. With its new online saddle selector, you can find your next saddle with just a few clicks. Visit and check out Pro’s newly expanded line of saddles.

If you like what you hear, subscribe to the VeloNews podcast on iTunes, Stitcher, and Google Play. Please give us a review and a rating, if you have time! Also, check out the VeloNews Fast Talk training podcast with Trevor Connor.

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