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#46
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Quote:
Jan Heine Founder Compass Cycles www.compasscycle.com |
#47
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My experience as well. I used to ride them daily on my urban commute and very few flats, even when I knew I had ridden over broken glass.
KJ |
#48
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I ran them at 40-45 psi tubeless in front but changed to tubes because I got tired of pumping them up twice per day. Not one flat in about 4500 miles and there is still a decent amount of tread still there. The rear would blow off at 60 psi tubeless, so, I ran them 60-70 psi with tubes but the casings of both ruptured spectacularly. Both. I am heavy....around 185-190 at the time. Bicycle rolling resistance is spot on with respect to puncture and rolling resistance. I'd be more confident rolling around on 185gm Silk pistas. |
#49
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Quote:
http://jeffsbike.blogspot.co.nz/2018...st-is-fat.html |
#50
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Rode on these from San Francisco to San Diego for a charity ride. 600+ miles, 7 days. On a steel bike, of course!
Plus: Felt like I was cruising down the coast in a Lincoln Continental. I could have taken a nap on the bike (and sometimes almost did). Minus: Four flats in 7 days. Fortunately the excellent ride crew was always nearby. |
#51
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Quote:
I'm curious. Tubes or tubeless? Extralight or regular? What sealant if any? I have bon jon EL in black on order. they will be set up tubeless. Going on a trek domane. |
#52
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Tubes. Extralight. Fantastic ride; maybe I was just unlucky. I'm certainly not giving up on them yet. Wish you well with yours!
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#53
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Quote:
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#54
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Rode with a pump & spare tubes. Flats were spread out over 7 day route.
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#55
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Thanks for the feedback Ciavete.
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#56
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Sure thing. Paceline has helped me raise hundreds of dollars for charity; always grateful.
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#57
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After 3 or 4 hundred miles on my Bon Jon ELs set up tubeless, I can positively say that I will not be going back to normal tires. After a couple of days of slow leaks the sealant did its trick and zero air loss. These tires are super smooth, easy rolling, fast, and no flats. Makes my bike much more enjoyable to ride. Most of my riding is on crappy pavement littered with debris and broken glass. Customer service is alive and well at compass tire. I'll be buying more.
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#58
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flawed roller testing
what about the roller being made of smooth/polished metal? that tire-road interface is nothing like what you'd see with smooth asphalt, much less the coarse stuff we experience in the real world. asphalt interactions with rubber, thus rolling resistance, must be massively different! this drum testing seems wack across the board.
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#59
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Quote:
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#60
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Quote:
As you are alluding to, rolling resistance can vary greatly depending on surface texture. Rolling resistance on rough surfaces can be much larger than rolling resistance on smooth surfaces. However, the relative difference in rolling resistance between tires does not vary much with surface texture. In other words, if tire A has less resistance than tire B on a smooth surface, then tire A will also have less resistance than tire B on a rough surface. So, even though BicycleRollingResistance uses a metal surface drum for their testing, the relative differences in resistance of the tires will correspond quite well with the relative differences in resistance of the tires when ridden on pavement. So if tire A tests better on the drum than tire B, tire A will very likely roll better on pavement than tire B. The caveat here is that comparisons between tires can only be made if they are tested under the same conditions and protocols. The rolling resistance numbers from one test may not correspond to the rolling resistance numbers from a different, completely independent test. This is similar to aerodynamics testing, where drag comparisons can only be made if the same conditions and protocols are used between different tests. |
Tags |
compass, crr, rolling resistance, speed, too good to be true, tradeoffs |
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