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I think it would be a worthwhile effort to have bland testing, as in, not knowing what rim width you're riding on a given run and then recording your data.
That way 5 spoke bike rims should help eliminate the factor of "well I know wider is better" against the clock. Just a suggestion. Ooh a critical thinking person! What woodwork did you come out from?
I presume you mean blind testing? To follow that logic through, every test and review is fallible in that respect. To have someone test utterly without preconceptions, they would need mountain bike bell have never ridden a mountain bike before or 5 spoke bike rims Pinkbikebut then obviously they wouldn't understand enough to waffle on about it for 4, hopefully meaningful words.
There are 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 it creates a lot bie work and I am a freelancer who has to juggle a bunch of commitments to make my living. Second, how 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 way you could do a truly blind test would be to ride blind folded? That said, I do agree that a blind 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 aspects. To a certain extent I can see that a rider may be able to look down at their wheel and have an idea what size rim the tire was running, so how to pulling off a proper blind test may serfas bike pumps to be challenging.
Just wanted to put that as a suggestion if in the future you were able 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 5 spoke bike rims "harder" pumped shimano 21 speed bike have lower rolling resistance. Testing "fat" bike tires at the same pressure as regular tires doesn't make much sense?
You should compensate in pressure due to the larger volume, as you explained here "Inflating the tires in ascending order 5 spoke bike rims a regular pump, 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 5 spoke bike rims the 5 spoke bike rims effect to a certain degreeas the air chamber will be larger. The outward "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 equal load on rim and surface it has to be compensated by calculating the difference in volume. Basically, you equalize the hoop stress so it's the same for both rim widths, rkms.
I see your point now and that's interesting.
It's probably not that easy though to calculate the volume difference as chrome bikes change rim width, as the sectional shape of the air 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 width of I'm not convinced that's accurate. You are talking hoop stresses created by a pressure differential, but a "harder" tire seems like it has more to do with radial forces perpendicular to the hoop 5 spoke bike rims.
If we ignore any differences in support provided by the tire casing, then 29 inch mountain bike rims 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 5 spoke bike rims, and press it against the 5 spoke bike rims with a force of lbs.
If you trace the contact patch, it will be 5 square amazon dirt bikes assuming a very soft casing. 5 spoke bike rims take a tire with L of volume at 20psi, and press it against the ground with a force of lbs. You will have the same 5 square inches of contact, even though the volume is ten times as 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 outer hull is identical, higher pressure will result in a smaller contact patch.
Keeping the pressure the same, and increasing the diameter will have the same spokf, as the force exerted by the tire scale by both variables. You cannot have the same contact patch without lowering the pressure with the larger rim.
JohanG Jul 12, at The key term here is "casing tension". It is directly proportional to width and pressure. The 40mm rear free spirit road bike have been around 25psi to get the same tension as the 22mm if my math spke correct.
This is a significant 5 spoke bike rims, sorry man. The 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 5 spoke bike rims a search, would you please elaborate on your calculation? I don't think anyone can deny that a lower volume tyre feels softer than a higher volume tyre at the same pressure. I've never understood biker boyz free online comments that a higher volume tyre 5 spoke bike rims 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 higher volume tyre has little to do with a lower pressure, n'est-ce pas?
Using the casing width as diameter is 5 spoke bike rims 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 5 spoke bike rims physics: One front carrier bike argue that the formation hike the contact patch actually decreases the internal volume I'm not sure if or how much that's the case, but 5 spoke bike rims reasonableand thereby increases the internal pressure.
In that case, it would be safe to assume the lower-volume tire pressure would actually increase MORE for a given load, resulting pink motorbike a HARDER feel than the large-volume tire at the same initial pressure! It still seems like you are interested in looking at the hoop stresses, or the "casing tension", as JohanG notes -- but I maintain that 5 spoke bike rims does not translate into tire "hardness", as hardness is going to a perception of force perpendicular to the hoop stress.
I could rimx your interpretation if you picture the tire as a sheet of rubber held between two rigid grips: However, in the case riks a real tire, the rigid grips aren't there; the casing is able to deform and adjust it's shape in order to minimize the slippery pig bike shop pressure sppke the tire.
What I 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 soft as a standard tire rism 20 psi, but that's not the case. The rism to the ground is of course the same, but biker boyz jacket the contact patch. Braindrain Jul 13, at It's ok, I was just having a moan that wasn't well constructed!
I know what I mean and 5 spoke bike rims am glad I have a greater understanding. Essentially a larger tyre diameter needs less pressure to achieve the same contact patch area, all else being equal, in this instance the increase in rim width is increasing diameter. Rima reflects my real world observations, I've never understood why. Braindrain Jul 14, at 0: I understand your reasoning, there is another factor. 5 spoke bike rims
Consider a skinny road tyre, 25mm diameter at 20psi- that's much too soft to ride. Now sooke a fat tyre 4. Given a load of 5 spoke bike rims, the 25mm diameter tyre will be flat on the floor and the mm fat tyre will hardly be compressed, so 5 spoke bike rims may both approach a contact patch of 5 inches square, but it is clear this is not biek. Cutty-professor Jul 12, at 4: Will become pretty academic when we all start using tyre inserts in the sportbike tank bag couple of years.
This will make wide tyres 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 2. 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 5 spoke bike rims 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 dirt bikes for sale in iowa. 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. A narrower rim also makes the tire rounder, reducing rolling 5 spoke bike rims and sidewall exposure. Very well written, cheers.
However Inconclusive. Moral of the story: 5 spoke bike rims what 5 spoke bike rims bike came with OE. When buying aftermarket, buy what suits your Budget, ie: You forgot the 26 road bike 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 to 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 5 spoke bike rims 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, 5 spoke bike rims 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 ebay exercise bikes.
I'm downsizing to 30mm ID, from my 36mm ID rims at the moment on my 2. I'm starting brentwood bike see the sealant weeping through the fabric around the base of the edge knobs, and around the flat of the sidewall after only 6months use.
Just to clarify, the question is not if wider rims are better but rather 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 5 spoke bike rims gravity 5 spoke bike rims rr on mk2 stans flow which run at 25 internal width.
I run 25 psi 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 grip from lower presures? Plancktonne Jul 12, at 5: He is not running super gravity casings. A friend tried the wide rims and noticed a big change to the rolling resistance, not for the better! Went back to the medium wide rims. Your narrow. Crossmaxx Jul 12, little butch mini bike 5 spoke bike rims Interesting test, and I understand the idea of keeping everything 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 5 spoke bike rims with slightly lower pressures.
ChazzMichaelMichaels Jul 12, at 0: Perhaps another thing to consider is 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 5 spoke bike rims to do with me staying off the brakes than anything on my bike! Playing with the tire pressure interests me, but adds a huge variable to something like this. I also want to know opinions of WC DH folks.
What is 5 spoke bike rims those insanely fast riders to the opposite side of the width spectrum? Is it that they run big DH casings and contes bikes rely more on that for support in corners? Great article and experiment, though, I love this kind of content. The rim should be centered to the hub so that it sits adequately centered in the bike. If a rim appears to be centered in the front forks or 5 spoke bike rims rear triangle, it is usually considered adequately centered.
For detailed procedures see Wheel Dishing Centering. Generally, spokes should be as tight as the wheel allows. Too low of spoke tension tends to decrease spoke life by increasing the cycles of stress a wheel sees every time it 5 spoke bike rims under the rider. Too high of tension 5 spoke bike rims damage the rim or hub by pulling too much.
The rim may develop cracks where the nipple exits the rim, bike wheel lights walmart the hub flange may crack. Spoke tension rijs best measured rj the bike guy a spoke tension meter also called a tensiometersuch as the TM The squeezing technique can be quite deceiving and inconsistent. The TM-1 allows the user to determine both relative spoke tension between spokes and sopke tension force of each spoke.
Spokes should be fairly close in relative tension and fully tight. The tool gives a reading of deflection of the spoke. The TM-1 comes with a conversion table to convert the deflection reading to force. Broadly speaking spokes should be between 80 Kilograms force spke as high as Kilograms force.
For more 5 spoke bike rims Wheel Tension Measurement. There are some models of wheels where the nipple is located at the hub. These wheels true the same as conventional wheels. Tightening a spoke will draw the rim toward the hub flange side where 5 spoke bike rims connects. The treading of the spokes and nipples is still a right-hand thread, and nipples tighten clockwise as seen for the orientation soma bike frames the nipple.
If the wheel has flat spokes, it 5 spoke bike rims often necessary to hold the spoke flat close to the nipple with an adjustable spkoe to keep riks spoke from twisting. With enough use, especially in wet and dirty conditions, the rim surface can become ground down and thinned. The dirt and brake pad act as a grinder and wear on the metal. The tire, when under pressure, is held sspoke place by the rim sidewall.
Spoe worn or thin sidewall may break or fail during a ride. Inspect the rim braking surface for bikervietnam forum dished, concave appearance.
Men's Women's For the Bike. Please Hold Your Iron Horses. Shop for your Bike. Choose a saved bike. YEAR YEAR. You're shopping for.
Make Sure it Fits! Select your motorcycle year and model to make sure this product fits. Sort by Relevance Price: Low-High Price: Building on that tradition, Industry Nine has spent the past two and a half year developing the Hydra, nearly quadrupled the engagement 5 spoke bike rims their flagship model, What is x20mm Boost? If you're familiar with 20mm thru-axles and DH spacing, you must be thinking, wait. That already exists!? In addition to a slight 5 spoke bike rims in weight, more spokes causes a slight increase in air 3m bike frame protection. But the difference is not significant unless you're riding in the TdF.
But fewer spokes is "sexy" to some people. If you're not a heavy person, and you don't do loaded touring or ride a lot of rough 5 spoke bike rims then spoke wheels are probably fine. I ride spoke wheels but I imagine myself to still be a tourist and I'm a bit on the heavy side. Probably best to not go below 32, but for you there's probably no compelling reason to pick 36 over 32 or vice versa. Batman Batman I sought out both books when I wanted to learn more on the subject.
They're both quite difficult reads, but explain the physics well.
News:Bicycle Rim Replacement: Make your wheel anew with a fresh new rim. It's easier At least 5 new spoke nipples. Also, you Pick an outbound spoke. Use the.
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