Meanwhile I’m about to try out the TRP Spyre SLC dual-sided cable calipers after using 105 hydraulic for 18 months. I’m excited by the idea of having minimal free play in the levers like how I can set up rim brakes, but also have a bit more stopping power than on rim brakes.
I’ve just replaced the pads 3 or 4 times. The last time I did notice they were rubbing after putting in new pads. Ended up having to clean grime off the plunger things with alcohol and a Q tip for half an hour…
This is an unpopular opinion? I had thought that it was well aware that Enve was what you bought when you had more money than sense. Then, once you bought it, you had neither money nor sense.
Look at the state of all that ugly wide wheel rim sticking out when they tested the narrow tyre
See my point about optimising the tyre to the rims for aero… good video though
Fake edit: I’m pretty much a Light Bicycle wheel convert, at this point, due to the balance between quality, configurability, and cost. I can’t imagine what a US manufacturer could offer that would compare, at the same or even slightly higher price point.
Agreed that the nuances always matter. And too often, people arguing any issue oversimplify, discard the data that doesn’t suit their argument, and try to distract by attacking the other person or alleging hidden motives/conspiracies, leading to bad-faith arguments that are false but sound attractive. See other responses to my post for examples.
You’re absolutely right that rolling resistance as measured on the drum favors narrower tires, that narrower tires are lighter, and that there’s likely an aerodynamic benefit. However, there are things you need to add to your analysis:
Suspension Losses. A tire’s rolling resistance comes from hysteresis (what’s measured on a drum) and suspension losses as the tire flexes to absorb imperfections in the road surface.
System weight. To see real-world effects, energy losses from a tire need to consider the weight of bike and rider, not just the tire or full bike.
Magnitude. When each factor (rolling resistance, aerodynamics, etc.) is only considered qualitatively with terms like “more” or “less”, one can miss the fact that some factors have a much greater impact than others.
Wider Wheels. These seem to be responding to the ability to increase width due to the switch to disc brakes and the desire to run wider tires, not the other way around.
I’ll reiterate that it’s now very broadly accepted that wider tires at lower pressures are a better choice: either faster per se, or equally fast on their merits but more comfortable and therefore leading better performance in longer events. Why? A combination of all the factors we’ve mentioned.
Like you, I’m not an expert on this, but I do read widely and carefully. Here are some links that provide further detail and what I think are pretty good explanations. I’m sure you can find lots more from many different sources; again, I chose these because I think their explanations are well-written, not because they are the most authoritative:
I have some issues with his approach and some aspects of his claims, but he is far from the only voice aiming in that direction. Most notably for me is Josh Poertner from Silca. He has the experience and apparent lack of agenda that gives me confidence in his parallel suggestions.
The part about the narrower tyres giving a sensation of speed that gives the impression of going faster without actually going faster has a ring of truth to it I must admit…
Thanks for the spelling hint - my version of chrome doesnt seem to like doing its spell check on the forum anymore
I agree with the skepticism re: Rene Herse’s testing and agenda…but Josh has a long history in the industry of using actual data to inform his product choices / focus, and his current gig does not have any direct ebenfit from advocating for larger / bigger volume tires.
Those two factors give added credibility to his positions, IMO.
Add in the fact that he put major time & effort into making their tire pressure calculator and offering it FOR FREE as something of an altruistic offering to benefit all cyclists in my eyes. It may well help pull in some sales traffic to Silca via site access, but it is tangential at best without the same apparent bias the RH has.