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You're going to want an intermediate tire tread. Basically you trade off the mud shedding capability of the wider spaced lugs and instead have closer spaced ones. They'll roll well on hardpack but still bite pretty…
It seems like a company called SCADA is still producing a Head shock design very similar to the old Cannondales. https://www.scadatw.com/head-shocks/ I'd totally get one of these if it was specced on a gravel bike. The…
Thijsvanderwal wrote: Those GP5000’s should indeed be a bit more robust vs the pro one’s. Please note the G One RS now also comes in 35mm, that might hit the spot with its super race carcass and slick middle part? You…
Thijsvanderwal wrote: Why not go for the Pro One in 30mm instead? That has the super race casing, is available in tan & black, comes in both TLR and tube versions and nowadays even has 32 & 34mm versions. I ran the Pro…
I think for those in the market for a full suspension gravel bike, the Topstone Lefty 1 seems a way better machine as the lowest spec STR at a similar weight. With the Cannondale you get actual suspension instead of…
Here's a blog post by Silca that talks more about this added factor in rolling resistance, which he calls impedance: "Traditional tire drum testing, the kind done by Tom Anhalt, BicycleTireRollingResistance, Al Morrison…
ccand51997 wrote: Speedking at 25 psi is 19.1 with tube and old Black Chili. (Interpolating his other data, I would give it 2 watts for new Black Chili and 5 watts for tubeless {see his article about the old Raceking…
thumper88 wrote: The subject here is what rough surfaces do to rolling resistance. This fast-rolliing car tire stuff is applicable for a general discussion of the theory of tires on smooth or relatively smooth roads...…
thumper88 wrote: [ Because car tires are run almost entirely on hard, smooth pavement. It’s as simple as that. I don't know if anyone actually read that link I posted above. The deep linking to the section I quoted was…
So I've finally found the answer I believe, a scientific explanation of why the interaction between a narrow tire contact patch and the road surface can result in a reduction in rolling resistance. Note that this…
barrows wrote: " The above is just plain factually incorrect. In the 90s MTB pros routinely rode 1.95 tires at 35-40 PSI, now WC Pros run 2.35s or 2.4s at pressures often at, or below 20 PSI. The same has happened on…
ccand51997 wrote: To contribute my own opinion and experience to the discussion, I don't think width or contact patch in and of themselves matter one bit. The flexibility of the tire and the rubber compound are what…
thumper88 wrote: But first, please address your initial claim that a larger contact patch makes gravel tires slower. Can you do that? Contact patch per se has little to do with rolling resistance. Rolling resistance…
Ok this University of Wisconsin study is definitely going to put this discussion to bed. It actually measured the size of the contact patch of various width mountain bike tires at different pressures. You can clearly…
thumper88 wrote: An Iranian test. In a Spanish agricultural journal? that’s the best you can do? I'm sorry but if this is what you're resorting to, you're basically admitting you've lost the argument. This paper clearly…
This is basically the math behind what I've been trying to say. The width and the length of the contact patch do not increase equally under load. The width increases much faster: "Contact patch width is a polynomial…
thumper88 wrote: Why do people keep insisting facts aren’t facts? Read the Road and Track passage again. Extraordinary hypotheticals just aren’t pertinent to the differences between a 33m cross tire and a 44mm gravel…
Just think about it in reverse to get a sense of it. Say you're trying to equalize the contact patch/grip on two wheels. One is 700c x 20mm the other is 700c by 20 meters. You're not going to be able to pump the 20…
Here's an article from popular mechanics: "There are two ways to increase the size of the tire's contact patch: make it longer or wider. A longer patch of tire tread means that the tire's overall diameter increases.…
thumper88 wrote: This being the internet, any sort of misguided information can always be found, or something worded too vaguely that sounds like it supports bad physics. Yes the construction of the tire comes into…