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• #1752
Going down a hill wide tyres definitely have an aerodynamic impact making it slower.. But at a constant speed bigger tyres actually have a lower rolling resistance and can be faster.
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• #1753
Yeah, I get that. I'm just wondering whether anyone has actually tried riding down a hill on a wide and narrow set of tyres and compared the difference. I reckon that unless you're going in a straight line on perfect tarmac, the fat tyres might have an edge.
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• #1754
Yeah I agree. Fat tyres a very confidence inspiring on descents.
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• #1755
New Ibis. Nice little homage to their heritage too:
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• #1756
I have no idea why Open UP completely denies putting few holes for mudguard mounts.
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• #1757
But the Ibis has an Enve fork that doesnt have guard mounts anyway
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• #1758
I commuted for months the same route, about 12 miles each way. Sometimes with my Bianchi, brakeless, in 23/25c with Schwalbe one front, Durano rear, mostly in my Arkose SSCX in 38c with Vittoria Hypers set up tubeless. The results were clear, the Bianchi was faster even tough I was spinning out as soon as the road pointed down.
I tried to put similar GI in the SSCX, pumping the hypers to an absurd 60psi, still was slower.
In the end I was using the Arkose everyday at 40psi. On road was fast enough to keep with fellow roadie commuters, way more comfortable and I could run very fast in gravel, canal paths and farm tracks too.
None of this very scientific, the Bianchi was lower and longer, but that's what I found. -
• #1759
I'm awaiting my hunt 650b wheels to put on the sequoia....mainly because the stock wheels are heavy and shite, but also to try the whole 650b thing. The tyres on my stock rims are 42mm sawtooth jobbies, and I have to say, they are very good at around 30-35 psi. I'll be putting some schwalbe G-ones on, in 650x2.35 flavour, so I'll be losing a shit load of weight, but will have a similar wheel diameter.
Eventually, I'll also be attempting to bastardise my old airborne ti frame into a gravel thing...trying to do that with spare parts from the cave though. -
• #1760
I built a 90's mtb as a roadbike, with the same setup as my roadbike, with 44 Compass ultralight tyres. Somehow it was harder to ride in the same group as usual on audaxes and climbing felt more fatiquing. Maybe the frame is just too flexible or something. The weight was about the same.
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• #1761
42mm sawtooth jobbies
Keeping these?
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• #1762
trying to do that with spare parts from the cave though.
Good luck! Whenever I try that, I somehow end up with even more spare parts :D
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• #1763
Probably fella....for the ti project, they should just fit
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• #1764
Worth a shot, I like the look of them
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• #1765
You're not wrong! I'm going to try to whittle out some old MTB shifters to fit some road drops etc....no doubt I'll break em, bin em, then have to start buying more stuff!
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• #1766
I'd love an early 'handjob' fnar....
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• #1767
Interesting, cheers. Of course that test doesn't show the effect on climbing agility at all, and not all (even UK) roads are quite as bad as the pavé. Intuitively my gut says 38-42 is probably the sweet-spot for most paved UK roads, but that's based on virtually no experience or any evidence.
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• #1768
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• #1769
Another boring pic of my bike.
Re tire chat I ride 35c G ones on everything and keep up just fine on road rides as well as against MTBers off road. Until I bin it. Like I did on technical descents in the peaks last week.
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• #1770
how hard was it to take Swarf off?
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• #1771
That is one very beautiful bicycle.
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• #1772
Early ibis mojo....was referred to as a 'handjob' due to the rear cable hanger 👍
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• #1773
Undo 3 bolts front and back.
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• #1774
amazing, ta .. still waiting for mine :(
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• #1775
Thanks. I do love it, and like I say I do everything on it. Carbon wheels , Salsa cowchippers and ultegra cranks were final changes. Now super happy with it and feel no need to do anything to it other than ride it
Also a full tubeless convert after multiple punctures touring last week that just sealed up.
Also I think the lower pressure can be felt when accelerating hard, naturally the whole system isn't as stiff so is less responsive.
Context: I rode my cross-check with 35c paselas for a winter with my uni club inc some chainganging
Have 0 experience over 38c though