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mikael : tyres   38

WTB Resolute Tire: Checkpoint
Two things to note here. First- The Resolute is a far bigger volume tire than a Nano 40 is. Secondly, the Nano is not nearly as fast a tire and excels at straight line traction more so than the Resolute. What results is that on the one hand, with the Nano 40, you have a tire that is adept at climbing, braking, and maybe most importantly- fits many cyclo cross bikes. On the other hand you have a general purpose off-pavement tire with exceptional ride feel, speed, and that has good stability on loose gravel. However; the Resolute is not going to fit a lot of older bikes. This is why I call out for a 37-38mm variant. So, if both tires were similar size the conclusion would be that the Nano 40 is more of a specialist while the Resolute is more of an all-around tire.
forum-posts  tyres  reviews  cycling  bikes  compare 
10 weeks ago by mikael
Schwalbe G-One ALLROUND tire at Rivendell Bicycle Works
Schwalbe says those thousands of tiny nibbies make this a good sand tire. That may be, but we ride it on roads and trails, and it's probably the current favorite of Will, Roman, and maybe Grant, who tends to downplay tread differences. But the G-1 certainly does seem to grip well on all kinds of trail conditions, and rides smooth on pavement. It's as good an all-around tire as you could ask for.
cycling  bikes  tyres 
december 2019 by mikael
These are results obtained in an extensive study, carried out in conjunction with ‘Deutschen Sporthochschule, Köln’ (German Sports University Cologne) to determine the effects and possibilities of tire suspension. The damping action of Big Apple tires was compared both with bikes using rigid (traditional) frame construction and with others using both part- or full-suspension systems. The parameters of vibration loading and acceleration were measured by accelerometers that were attached to different places on the bicycle and on the rider’s spine. Test tracks were cobbles, stone path and a specially constructed, indoor obstacle course. Parallel to this, power was measured using an SRM crank. In each case the selected results compared a 60 mm Big Apple inflated to 2 bar with a 37 mm width standard tire at 4 bar. These are air pressures typical in everyday use. In addition the lab tests demonstrated that these air pressures produced the same rolling resistance.
tyres  bikes  test 
september 2019 by mikael
2 650B Or Not 2 650B: That Is The Question
Smaller diameter, but super volume and super smooth ride. Make it worthwhile if you drop down a size in diameter and go wide, or go home. I'm not at all interested in 650B X (anything less than) 47mm. Nope. Give me a big, voluminous 650B, and maybe I'll fall in love with that. So then, why not just go wide and keep it 700c? Yes indeed- why not? The trouble is that then you end up with a bike that almost cannot be anything but a Fargo or clone thereof. I was online the other night perusing Kona's line up for 2020 at the suggestion of a reader here. They make the Sutra model which sports 700c X 50mm tires, but it isn't a whole lot different than a Fargo and has limitations which a Fargo does not have regarding the drive train and tire clearances. (Or you could see that the other way around too.) The 700c X 45+ size tires start to get into a territory that road based drive trains were never meant to live in. That and the emasculation of MTB gearing choices down to a single chain ring has really pinched the rider that understands wide range gearing that promotes a straight chain line. Your choices are more limited than ever on the mountain biking side of things. So, 650B to the rescue. I guess. There you can get that wider tire stuffed into a frame and still get away with a road based, wide range drive train. You lose that diameter component, but the choices are greater when looking at gearing and all. I'll be checking out some more tire choices and running 650B sizes in the future, and I'll probably still be going back and forth about it.
bikes  tyres  cycling  blog-posts 
august 2019 by mikael
Choosing Fenders
It's important to also get fenders of the proper radius. 27" and 700c wheels are close enough to use the same fenders. 650b and 26" fenders are close and some folks do use one size on the other, but fender line is not going to be perfect.
fenders  tyres  bikes  cycling 
august 2019 by mikael
Opony Schwalbe Marathon [temat zbiorczy]
Np. takie Schwalbe G-one 60 albo 70mm...
bikes  cycling  tyres  photos 
august 2019 by mikael
Gravel- swapping 700c for 650b
700 = 622+2×38=698
650 = 584+2×50=684

difference is 14mm so bb would be 7 mm lower in theory.

My mate has swpped from 700x 35 to 650x 35 on his gravel bike to remove toe overlap. BB drop hasn’t been a problem.
bikes  tyres  cycling  forum-posts 
august 2019 by mikael
Schwalbe Rock Razor Tire - Review
Schwalbe's Rock Razor is not a tire for everyone. You'll need to be honest with yourself when you are considering the Rock Razor. If you are not confident leaning a bike into corners and braking precisely, then it is probably worth looking at a more forgiving option.
reviews  tyres  bikes  cycling 
august 2019 by mikael
Can I use an inner tube that's too narrow for the tyre?
You may be perfectly OK, or may experience several possible problems:

* The area near the valve on the tube is the stiffest part, and does not expand as easily as the rest when over-inflated. This may result in a slight depression in the tire near the valve that you will feel on every revolution (especially if you start thinking about it). Not a significant reliability issue, but it can be a comfort issue.

* As the tube expands in its width from over-inflation, it expands even more in its overall circumference. The tube can, before it gets "locked in" to the sidewalls of the tire, expand enough that a portion of the tube telescopes on itself, in the short term creating a lump, and in the only slightly longer term creating a stress point that will result in a fairly sudden deflation of the tire.

* And obviously, the tube is being placed under more stress than it's designed for, and it's apt to simply fail, especially near the valve.

I wouldn't hesitate to use the (slightly) wrong size tube for a relatively brief period, as an emergency measure, but I wouldn't regard such a repair as trustworthy over the long haul.
bikes  repair  tyres  forum-posts  cycling 
april 2019 by mikael
Rigid Steel Off-road Touring Bikes (with Plus Tires)
Also consider the weight saving benefits of riding a narrower Plus wheel. A 2.8 tire on an i35 rim can be a few hundred grams lighter than a 3.0 tire on an i45 rim. Use a 2.6 tire on an i30 rim and save even more weight. The 2019 Salsa Fargo now comes with 2.6 tires on i30 rims. I've been riding Plusbikes for a about 5 years now and in my own personal experience 2.8 tires on i35 rims are every bit as good as 3.0 tires on i45 rims. You just don't need more than 2.8 tires on i35 rims!
wheels  tyres  cycling  bikes 
february 2019 by mikael
Tech Talk: Are your bike tires too wide for your rims? Here's how to get it right
For reference, a 62mm wide tire is 2.44″, which is where the current standards formally end. But, with some calculations of the ETRTO standards, we came up with a rough guideline suggesting your rim width should be between 32% to 70% of the tire width. For a 2.8″ tire, that means rims with an internal width of 23mm to 49mm. Based on all of these conversations behind this story, our hunch is that the “ideal standard” lies near the upper middle of that range, so something like a 35-40mm IW rim would be the best starting point for safety, optimized performance and a good tire profile. Disclaimer: That’s our math and opinion based on the charts and excludes the narrowest tire width fringes, so use at your own risk.
bikes  cycling  wheels  tyres 
january 2019 by mikael
UPDATE! Marin Gestalt X11 Max Tire Size - What Am I Missing?
Well, I mounted 38mm Panaracer GK Slicks today (with tubes ... wanted to make sure I had clearance before mounting them tubeless). And they fit! The real concern was the clearance between the seat tube and the tire. With the rear tire at 55psi I have about 3-4mm of clearance. I don’t ride in the mud, so I’m not worried about it being that tight. Plenty of room everywhere else. But 38s are definitely the biggest I’d try to fit. By the way, the GK’s measure 38mm on my 21mm inner width rims.
bikes  cycling  tyres 
january 2019 by mikael
27.5+ and 29+ Bikes: What Does it all Mean?
Right now there are two different plus-size options out there: 27 and 29 Plus. The simplest way of thinking about it is this–27.5+ amounts to sticking a 3-inch tire on a wide (45 to 55 millimeter), 27.5-inch rim. Twenty-nine Plus, no surprise here, involves putting a 3-inch tire on an equally wide 29er rim.
Most of the buzz right now centers on 27.5+. If you were a betting man, this would be the tire you'd pick to prevail because you can already squeeze 27.5+ tires into a lot of 29er frames. From an engineering standpoint, it should be relatively easy to crank out new 27.5+ bikes. Twenty-Seven Plus is basically a squishier flavor of 29er and, yes, there's no shortage of irony there if you go looking for it. And then there's this: 29+ tires should, by all rights, weigh more than 27.5+ tires. A bigger tire, you might guess, would require more rubber and all that. Since heavy tires are the bane of any mountain biker's existence, this should be yet another nail in the 29+ coffin. It isn't quite so simple. A lot of the high-volume 27.5+ tires actually have a taller sidewall than comparable 29+ tires. This makes them less stable under hard cornering than lower-profile 29+ tires and that extra sidewall rubber adds up. It's hard to believe, but there are 27.5+ tires that weigh more than some 29+ tires. Trek suspension engineer, Ted Alsop, puts it this way, "27.5+, ideally, has the diameter of a 29×2.3 tire, but to get there, you have to give it a really tall sidewall. The bead-to-bead measurement–that's the actual width of the tire if you pressed it flat and measured from one bead to the other–is about 15 millimeters wider than a 29+ tire. Relative to the rim, the 27.5+ tire is actually taller than the 29+ tire, which is why we've found that the 27.5+ tires that we've ridden have a lot more of an un-damped, fatbike tire bounce to them and don't corner as well at lower pressures. The 29+ tire, which is actually a lower profile, shorter sidewall tire, has less of that uncontrolled bounce to it." Chris Drewes, Trek's MTB product manager, has this to add, "It's kind of the wild west for 27.5+ tires right now. You see high-volume tires, you see tires with tons of knobs with sidewalls that are much wider than the actual tread itself. You see 27.5+ tires that weigh, literally, more than a 4-inch fatbike tire. So, it's all over the map. It's going to take some time for the market to really figure out what 27.5+ even is. What that means is there are going to be some great 27.5+ bikes coming out now and some really shitty 27.5+ bikes too." […] Squeezing a 3-inch tire into a bike's rear end quickly eats up precious real estate in the rear triangle. There isn't much room left for a front derailleur or, depending on how short you want the chainstays, even a chainring. Sure, you can make it all work if you want a hardtail with 18-inch chainstays, but then you just introduce that crappy, lumbering feel that made so many people hate 29ers for so long. There are a couple of ways to work around the problem. You can either use a wider bottom bracket to give you the necessary tire/chain/chainring clearance or you can adopt Boost 148, a rear-axle standard developed by SRAM and Trek. Boost 148 widens the rear hub flanges 6 millimeters and pushes the chainring out 3 millimeters. Trek, naturally, is running Boost 148. It’s not alone; other companies, such as Specialized, are following suit. Rocky Mountain is going the wider bottom bracket route.
tyres  bikes  cycling  blog-posts 
january 2019 by mikael
How Wide is Right for Me?
If you like the nimble handling of a racing bike, then choose 650B wheels for 38 mm tires. If you prefer a bike that locks onto a cornering radius and won’t be deflected even if tense up in mid-corner, then use 700C wheels for 38 mm-wide tires. […] If my ride includes a lot of gravel, I’ll pick 650B x 48 mm or even 26″ x 54 mm. On pavement, the downside is that you get some tire roar – how much depends on the diameter of your bike’s frame tubes that provide the resonance chamber for the noise – and the tires’ feel is more sensitive to tire pressure. On the plus side, the traction in paved corners will blow your mind.
tyres  bikes  cycling  blog-posts 
july 2018 by mikael
Review: Compass 650B x 48 Switchback Hill Extralight TC
Verdict: Exceptional, super-light, big chamber tyres that roll fast on tarmac and gravel alike.
reviews  tyres  cycling  bikes 
july 2018 by mikael
Clincher vs. Tubular Bike Tires
Tubular tires look the same as clinchers on the outside, but work in a very different way. Tubulars are completely round, so there is no open part of the tire that needs to clinch. There is also no tube needed – -the tube is basically sewn into the tire and is part of it. As a result, the tubular is just one piece, whereas the clincher is two pieces (tube and tire). Tubular tires are often glued to the rim, because without some glue they tend to move around a bit.
tyres  cycling  bikes 
june 2018 by mikael
700c 28er - same as 29er?
As usual, Sheldon's got the answers.

ISO 622 is the unambiguous way of referring to the following rim sizes:

700c (you see this marketing on road, hybrids; this is from the French system; the c is often dropped, but there are rare a,b sizes)
29"x decimal (you see this on mountain bikes; usually only applied to wide rims)
28"x decimal (particularly in Germany)
28" x some fractions (seems to be a rare Canadian / northern European thing).

700 mm is roughly 27.5 inches, so if you mounted a reasonable tire on it, you'd get around 28 inches (hence the name 28"). For mountain bikes, you'd get a bigger tire giving an outside diameter of 29"+.

In theory, any tire which can be mounted to a rim marked as any above sizes can be mounted to the others, but in practice you want the rim width to be appropriate to the tire size you're mounting.

In terms of which way you should refer to this wheel size, ISO 622 is unambiguous. If its being used on a road bike or hybrid, 700c is also a good way to refer to it. If its being used on a mountain bike with a big tire, 29" is also a good way to refer to it.
tyres  bikes  cycling  forum-posts 
june 2018 by mikael
Donnelly X'Plor MSO 40mm tire review
If your gravel bike sees commutes to work, road spins at lunch, and dirt road adventures on the weekends, the X'Plor MSOs fit the bill.
reviews  tyres  cycling  bikes 
june 2018 by mikael
700C to 650B Conversion, Road Bike to Gravel Rig
Interested in converting a 700C cyclocross or touring bike into a 650B gravel bikepacking rig? Or maybe you’re just intrigued by 650B / road plus? With the promise of dirt-friendly tires and a more supple ride, there’s plenty to like. We took an Advocate Lorax and made the switch. Find out what we learned about 650B, everything you need to know about such a conversion, and details about the specific components we selected.
tyres  wheels  cycling  bikes  tutorials  blog-posts 
may 2018 by mikael
Tires: How Wide is too Wide?
How wide a tire is too wide for optimum performance? Our research shows that wider tires don’t give up anything on smooth roads, and gain a significant advantage on rough roads. This has been shown for tires up to 31 mm wide.
cycling  tyres  bikes  blog-posts  test 
april 2018 by mikael
Rock n' Road Tires 700c x 43mm
After years of being locked away in a dusty corner of the shop, we have decided to bring back the original Rock n' Road tire - along with a host of improvements. Built by Panaracer in Japan, the new tire is ideal for all-purpose riding. Not a full road tire, not a full dirt tire, but a great all-arounder.
Things you need to know

The new tire measures out at a nice 43mm wide (or 1.72" for the Imperial folks) x 700c.
Both Blackwall and Skinwall Available
It's lighter than the original. Our 43mm x 700c weighed right about 540g.
We paid extra for top quality! Japanese-built by Panaracer, the tire has a nice Kevlar folding bead.
Your bike has to have at least 43cm chain stays for the tire to fit.
tyres  cycling  bikes 
february 2018 by mikael
The 650B alternative: Is this smaller wheel size right for you?
This is a wheel size with smaller rims than the 700C road bike standard, but larger than the 26-inch size that was the standard for mountain bikes until a few years ago. Because the rims are smaller, fitting 650B wheels into road and gravel bikes that usually take 700C wheels allows the use of fatter tyres with little or no alteration to the frame design, assuming you have disc brakes.

There used to be loads of French wheel sizes, designated by the rolling diameter of the tyre in millimetres, and a letter. The road bike standard 700C is one of these sizes; it originally had quite fat tyres that bulked things out to a rolling diameter of 700mm.

Wheel size designations are a proper omnishambles. The only way to be sure a tyre will fit a particular rim is to look at the size of the bead seat, the part of the rim where the tyre fits when inflated. Your 700C wheels have a bead seat diameter of 622mm; for 650B it's 584mm.

The 650B size was popular with French touring cyclists back in the 60s, and has been brought back from the brink of extinction by the mountain bike industry. It has pretty much replaced the original mountain bike 26-inch wheels, which have a bead seat diameter of 559mm. Also referred to as 27.5in, the wheel size is now found on bikes from entry-level hardtails to downhill bikes.
cycling  bikes  wheels  tyres  articles 
february 2018 by mikael

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