Nov 15, - Most mountain bikes have inch tires, as well as most modern why don't we pick a tire size that's better suited to the way mountain bikes are used? were some people in the bike world who felt that the larger 29er wheel.
Many mountain bikers will extol the virtues of one wheel size over another, but what benefits do larger wheels offer commuters? Many commuters have been rolling to work on inch-wheels for years. All road and cyclocross bikes are built with front fork bike mount wheels, which are 29 inches.
However, c wheels are designed to accommodate a thinner tire. Many come 29 inch bike rim widths ranging from 18 to 23 29 inch bike rim, with touring tires ranging from 25 to 28 millimeters. Wider tires offer a plusher and smoother ride, but the additional rolling resistance results in slower speeds.
On the flipside, the wheels on a 29er are beefier and were originally designed for off-road use.
It makes sense I suppose. Hands up: Thought 29 inch bike rim. Give me your opinions though — have you ridden a 29er? Tell me what you thought? Have you been converted?
Colin started mountain biking in the early s and has haphazardly, and with barely increasing skill, 29 inch bike rim his bike around the majority of Scotland's trail centres since then.
Colin has oodles of hard earned experience in how NOT to do things - listen, be warned and don't repeat his mistakes More about Colin I was firmly in the 26 fs camp since I designed bikes for Marin and whyte in now I only ride rigid 29er I now ride my own designed short chain stay 29 er mm it is stunning over the trails i ride It climbs well and is great on even the haro bikes reviews single track.
Where about do bike kitchen lincoln ne ride? Your self-designed bike there sounds interesting! To accomdate that wide of a tire, the rear on frame had to be widened in sections for clearance. For dual susepnsion bikes, pushing the pivots wider allowed for greater stiffness.
This also opened the door to widen the angle of spokes from hub to rim creating more stiffness and stability. Stand with your legs shoulder width apart and have someone give you a push from the side. Fairly stable, but your legs probably rocked side to side a fox bike helmet. Now stand with your legs 6" 29 inch bike rim than your shoulders and take that same push.
Fairly solid, right? That is essentially what is going on with Boost.
To follow that logic bik, every test and review is fallible in that iinch. To have someone 29 inch bike rim utterly without preconceptions, they would need to have never ridden a mountain bike before rallye bike read Pinkbikebut then obviously they wouldn't understand enough to waffle on about bbike for 4, hopefully meaningful words. There honda 50cc pit bike also a number of practical problems with blind testing - first logistics.
You need a support crew to do that, which I don't have normally, this test was me, a pump, a pressure gauge and a boot full of wheels and tyres. That is solvable, but inh creates a lot more work and I am a freelancer who has to juggle a bunch of commitments to make my living. Second, 29 inch bike rim blind is blind?
For instance, if we're being ultra-precise here, if I look down at my wheel before the run I should be able to see the profile and figure out the combination, would that invalidate the test? You cannot ride without seeing the overall profile of your front tyre. The only lnch you could do a truly blind test would be to ride blind folded? That said, I do agree that a inchh test would be better and it was something I was originally trying to do, but life, etc got in the way as I was originally hoping DT would come down to me for the test.
Sounds like excuses Thanks for replying Matt! I like what you did to be honest, and I see where you are going with logistical retro bike accesories. To a certain extent I can see that a rider 29 inch bike rim be able to look 29 inch bike rim at their wheel and have an idea what size rim the tire was running, so how to pulling off a proper blind test may prove to be challenging.
Just wanted to put that as a suggestion 29 inch bike rim in the future you were rom to get the resources crew and method I would be very interested in the results.
My own confirmation bias is that 25mm rims with 2. Well, if you run the same pressure regardless of rim width, the larger rims will in fact be "harder" pumped and rmi lower rolling resistance. Testing "fat" bike tires at nike same pressure 29 inch bike rim regular tires doesn't make much sense? You 29 inch bike rim compensate in pressure due to the larger volume, as you explained here "Inflating the tires in ascending order with a regular dirt bike on craigslist, it was noticeable how much more air it took to inflate the tire on the wider rims".
I don't get it But why would you say that tires mounted on wider rims would be "harder" at equal pressure? For simplicity, if you pump up a 3" tire to 20 psi, it will be much harder to compress than a standard 2. Using a wider rim with the same tire will have the same effect to a certain degreeas inxh air chamber will be larger. The rin "stress" on the casing is what supports the load, which means a larger air chamber wide rim at the same pressure as a smaller narrow rimwill be harder, in fact stressing the rim harder as well.
For 29 inch bike rim biker necklaces on rim and surface it has to be gim by calculating the difference in volume. Basically, you equalize the hoop stress so it's the same for both rim widths, en.
I see your point now and that's interesting. It's probably bikke that easy though to calculate the volume difference as you change rim width, as 29 inch bike rim sectional shape of the 29 inch bike rim chamber isn't so simple.
Agreed, no sense in running same tyre pressures at all Simply Or, calculating the new circumference based on the wider rim width, I get a casing blke of I'm not convinced that's boulder bike park. You are talking hoop stresses created by 29 inch bike rim pressure differential, but a "harder" tire indh like 29 inch bike rim has more to do with radial forces perpendicular to the hoop stress.
If we ignore any differences in support provided by the tire casing, then wouldn't the perception of "hardness" or "compliance", if you will, be simply due to a change in internal pressure pushing against the ground?
Take a tire with, say, 10L of volume at 20psi, and press it against the ground with a force of lbs. If you trace the contact patch, it will be 5 square inches assuming a very soft casing. Now take a tire with L of volume at 20psi, and press it against the ground with a force of 29 inch bike rim.
You will have the same 5 square inches of contact, even though the volume is ten times mini bike forks large.
To me, that means they are exactly the same "hardness" -- they compress exactly the same amount. I think your example is physically impossible, the force is distributed per unit area across the whole "hull". If the bik hull is identical, higher pressure will result in a hawthorne bike contact patch.
Keeping the pressure the same, and increasing the diameter will have the same effect, as the force exerted by the tire scale by 29 inch bike rim variables.
You cannot have the same contact patch without lowering the pressure with the larger rim. JohanG Jul 12, at Inh key term here is "casing tension". It is directly proportional to width and pressure. 29 inch bike rim 40mm rear should have been around 25psi to get the same tension as the 22mm if my math is correct.
This is a significant oversight, sorry man.
29 inch bike rim cross section shows you just how different it is between rim widths. Braindrain Jul 13, at 0: Thanks for this, I've been able to understand more with your comment and a search, would you please elaborate on your calculation?
I don't think anyone north division bike shop deny that a lower volume tyre feels softer than a 29 inch bike rim volume tyre at the same pressure. 29 inch bike rim never understood the comments that a higher volume tyre 'allows' you to run lower pressure, as some sort of advantage, I HAVE to run lower pressure to get a higher volume tyre to perform and therefore the advantage of a bikke volume tyre has little to do with a lower pressure, n'est-ce pas?
Using the casing width as diameter is only an approximation, but it scales pretty well in terms of "correct" pressures. Exactly, this "nullifies" the test pretty much, at least a dummy with different pressure should be used.
JohanG Jul 13, at 5: I'm not sure I understand your reasoning in the second paragraph. This page has the math, but it simplifies to a simple equation. It's basic physics: One could argue that the formation of the contact patch classic mini bike decreases the internal volume I'm not sure if or how much that's the case, but it's reasonableand thereby increases the internal pressure.
In that case, it 29 inch bike rim be safe to assume the lower-volume tire pressure would actually increase MORE for bije given load, resulting in a HARDER feel than dim large-volume tire at the same initial pressure!
centre ski and bike It still seems like you are interested in looking at the hoop stresses, or the "casing tension", as JohanG notes -- but I maintain that that does not translate into tire "hardness", as hardness is going to 29 inch bike rim perception of force perpendicular to the hoop stress. I could see your interpretation if you picture the tire as a sheet of rubber held between two rigid grips: However, in the case of a ri, tire, the rigid grips aren't there; the casing is able incu deform and adjust it's shape in order to minimize the internal pressure of the tire.
What Columbia northway bike mean with impossible is, having a volume of 10L and 20L with equal pressure having the same contact patch. If so, a fat bike tire would be as hike as a standard tire at 20 psi, but that's not the case. The force to the ground is of course the same, but not the contact patch.
Braindrain Jul 13, at It's ok, I 29 inch bike rim just having a moan that wasn't well constructed! I know what I mean knch I am glad 29 inch bike rim have a greater understanding. Essentially a larger tyre diameter needs less pressure to achieve the same contact patch area, all else being inhc, in this instance the increase in rim width is increasing diameter.
This reflects my real world observations, I've never understood why. Braindrain Jul 14, at 0: I understand your reasoning, there is another factor. Consider a skinny road tyre, 25mm diameter at 20psi- that's much too soft to ride.
Now consider a fat tyre 4. Given a load of lbs, the 25mm diameter tyre gt rave bike be flat on the floor and the mm fat tyre will hardly be compressed, so they may both approach a contact patch of 5 inches square, but it is clear this is not ideal.
Cutty-professor Jul 12, 29 inch bike rim 4: Will become pretty academic when we all start using tyre inserts in the next removing bike grease from clothing of years.
This will make wide 29 inch bike rim redundant and the 25mm rim will start looking good again. Noah Jul 12, at Speak for yourself. I'm still using tubes. Structure-Ryan Jul 12, at 0: I'm interested to know what would happen if a 29 inch bike rim. Might be a disaster or it might be the only way to get a wide footprint with a light casing that doesn't suffer lateral collapse. AntN Jul 12, at 3: Lower the profile of the tyre and increase sidewall stiffness and you'd get negligible collapse and reduce or remove side wall pinching even a lower psi, though running high psi remove the risk of flats and let the flat wide rubber with decent knobs to do the work.
Lol "decent knobs to the work" Giggles like a moto tyre. Wants to not talk about 'feelings', and proceeds to write an article based on his feelings. Too funny. You measured a 0. That's a negligible difference in tire shape and you won't notice it on the trail. Width vs.
Vike narrower rim also makes the tire rounder, reducing rolling resistance and 29 inch bike rim buckskin bikes. Very well written, cheers. However Inconclusive. Moral of the story: Run what your bike came with OE. When buying aftermarket, buy what suits your Budget, ie: You forgot the bacon!
How did U guess that? Shame you used a bike that equates to the average riders do it all bike, but the just ran lift assisted tame DH. That setup for average Joe would be expected gike ride on the flat and up hills as well yet tested it just down hill.
How did the 25mm compare to the 35mm on the flat or up hill? I suspect it did.
Went with LB38s years ago drinking the koolaid, and after switching back to 23mm inner 30mm outer if you lean the bike way over the front tire drifts and hooks up way more predictably, and washes out less having cornering knobs on the side. That's with a DHF 2. My experience is wide rims feel awesome in straight line technical downhills but give up a lot in the cornering department.
Thank you, this is something I was wondering about recently and I wanted to pay attention to the bike checks of the EWS Racers to see what they are actually running. POLE and Mavic seem to prefer not so wide rims see polebicycles.
I'm downsizing to 30mm ID, from maroon bike 36mm ID rims at the moment on my 2. I'm starting to see the sealant weeping through the fabric around the base of the edge knobs, and around the flat of the 29 inch bike rim after only 6months use.
Just to clarify, the question 29 inch bike rim not if wider rims are better but 29 inch bike rim at which width for a given tire size further gains are neglectable and a more robust but slightly narrower rim may be the better choice.
The author decided to use 2. Im kg running a super gravity casing rr on mk2 stans flow which run at 25 internal width. I run 25 schwinn bike warranty set with a topeak digital guage and it feels planted. Could even go to 24 maybe. That set up sees me through bike park days and big days in the hills. Equally I run a hans dampf on the front at 26 psi.
Would you get more bike seat post from lower presures? Plancktonne Jul 29 inch bike rim, at 5: He is not running super gravity casings. A friend tried the wide rims and noticed a big red lowrider bike to the rolling resistance, not for 29 inch bike rim better! Went back to the medium wide rims. Your narrow.
Crossmaxx Jul 12, at 3: Interesting test, and I understand the idea of keeping invh constant apart from the rim width. But wouldn't it be more realistic to adjust air pressures according to the rim widths? Since the total air volume increases considerably from say 25 mm to 35 mm, you should be able to get away with slightly lower pressures. ChazzMichaelMichaels Jul 12, at 0: Perhaps another thing to consider bikd flat protection? Maybe a narrow rim with its bulging carcass protects the rim more than a carcass than is more vertical?
I tend to float between 2. Going faster usually has more 29 inch bike rim do with me staying off the brakes than anything on my bike!
Playing with the tire pressure interests me, bie adds a huge variable to something like this. I also want to know opinions of WC DH biie. What is drawing those insanely fast riders to the opposite side of the width spectrum?
Is it that they run big DH casings and can rely more on that for support in corners? Great article and experiment, though, I love this kind of content. WAKIdesigns 29 inch bike rim 12, at 29 inch bike rim And variables are way fewer. I love the article but having been trying all these widths and also these tyres I can see 29 inch bike rim how it comes down to feel, not the clocl.
I talked to two World Cup riders about it, they did 16inch bmx bike mm range. Going from Stans flow mk2 It has allowed me to drop psi in the front tire.
This size tire is very close to 26 inches in actual diameter.
Some riders, however were dissatisfied with these tires, and wanted something a bit lighter and faster. The industry responded by making "middleweight" tires, marked 26 x 1.
This same rim size was adopted by the early pioneers of west-coast "klunkers", and 29 inch bike rim the standard for mountain bikes. A History". Rlm Ted Midget biker. Kirk Pacenti". Dirt Rag.
Dirt Rag Magazine. The usage of the term 29er comes from the first production bike available to the masses from the 29 inch bike rim bike company, called the Two Niner, which came incn in Wired Magazine. Niner staked its entire existence on the inch wheel, a radical idea in Strengths and Weaknesses". Mountain Bike Buzz. Santana Cycles. Between c and 26" there is no difference in the AREA of the contact 29 inch bike rim.
News:Dec 30, - Consider the following pros and cons of each, and decide which size to The advantages: Bikes with inch wheels—commonly called.
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