#46
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23-25 psi is fastest rolling for my gravel mixed-surface use, not to avoid the center strip. At 40 psi there's probably an additional 20w of suspension losses on gravel, much higher the rougher it becomes. It's barely 10% sag for my total system weight, way too low. |
#47
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#48
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You are not required to use these tires. |
#49
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Before even leaving your house, you can pump the tires up, sit on the bike, and measure the sag. Figure out what 10%, 15%, 20% maybe 25%.
Then You can do your own rolldown testing to figure out what rolls fastest and where the breakpoint is for the surface you are targeting and the pressure window you are considering. Then you can find a paved parking lot and try to corner as fast as possible to see at what pressure the sidewall collapses or where the tread starts pushing. Then you can find some rough gravel and push those corners too, roll down a gravel hill a few dozen times. Now, in the span of a couple hours on a sunny afternoon, you know more about tire pressure and behavior than 90% of cyclists, and you know 1000% more than you did before. At this point using an online calculator seems sort of stupid. All the tools are available, for you specifically, in the real world. A $20 frame pump, a $13 pressure gauge, a $10 stopwatch, some time reading and thinking, some time riding. You can figure things out for yourself, you don't need to use somebody else's data, somebody else's program prioritized for what they want. You can become the expert of your own domains. |
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Getting arrested for having my tire pressure too low, but it's a restorative justice jurisdiction so I get right back on the streets and do it again anyway.
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#51
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#52
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What are we arguing here ? - I like 23psi in my front 700cx42 Pathfinder Pro
You don't think you would like the same pressure Ok, great. ??? I can plot my data on a curve. If I did that and started selling things too, would that lend credence to what I've said? Is that the requirement? Businesses have exclusive authority to dictate reality? |
#53
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Imagine thinking, after all the things that took place to get to this point in collective bicycle tire knowledge, that an appeal to "most people" is anything other than laughable.
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#54
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#55
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As I've noted, it's a common complaint. Not interested in any more discussion with you. |
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#57
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#58
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Pulling this back from page 4 to note that Victor Koretzky won a World Cup short track XC event on 47mm Pathfinders this past weekend. This is less to note that Pathfinders are amazing (though I do like mine), but more that I'm amazed at the skill level of XC pros to push those tires through proper XC corners at short track speeds.
Last edited by Jaybee; 05-29-2024 at 09:12 AM. |
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I wonder if he would have done it if Specialized offered a true 29er slick - the Fast Trak is more of a semi-slick. |
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1) I'm no mountain biker, but that looks like a really fun bike to whip around on. Probably not this year, but I'm getting a mtb in the not too distant future.
2) That's a cool bike stand. Anyone know who makes it?
__________________
http://less-than-epic.blogspot.com/ |
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