Alloy Wheels Are Better Than Spokes On A Bicycle

Modern trends: replacing a spoke wheel

As mentioned above, the first bicycles were made of wood. Moreover, not only the frame, but also the wheels were wooden. In order to prevent the wooden rim from breaking under the weight of a person, there were wooden sticks inside it. Over time, bikes began to be made of steel, and knitting needles were sewn to replace wooden inserts.

The spokes turned out to be very comfortable, so despite the constant changes in the bicycles themselves, their wheels remained as they were in 1885. But, in Nowadays, modern engineers have decided to modify the wheels.

Bicycle without spokes in wheels

On cast wheels

Alloy Wheels Are Better Than Spokes On A Bicycle

Alloy wheels for bicycle wheels are usually made from aluminum or its alloy with magnesium and carbon. The discs are solid and even, usually 5-6 blades are made for each disc. It may seem to Kamu that this will add more than five kilograms of weight to the bike, but due to the lightness of aluminum, the weight of the two discs is NOT more than 1.5. 2 kilograms (although, compared to the spokes, this is quite a lot, because the weight of the spokes is usually about 500 gram).

Due to their racing history, bicycles with such rims are often produced under the brands of renowned car manufacturers such as:

  • BMW;
  • Ferrari;
  • Lamborghini;

A person who sees a bicycle under one of THESE brands, on a subconscious level, will associate it with a car, and in his eyes he will seem better than others. But unfortunately, almost all “elite” VELOBIKES are made in China.

Of the advantages of such wheels, the following can be noted:

  • High strength. It will be much more difficult to break a disc made of solid aluminum blades than regular spokes;
  • Attractive appearance. Solid aluminum wheels look much better than classic spokes. And if the wheels are also painted, so it looks gorgeous at all;
  • Bicycles with alloy wheels are much more aerodynamic. But this plus is only for those who like to drive their bike at high speed;

Lee, do not rush, and run to buy such a bike, after all, it also has disadvantages:

  • The first disadvantage is that such wheels DO NOT spring at all, so using such a bike for mountain trails is unlikely to succeed.
  • The second disadvantage is that if, nevertheless, somehow, it is possible to break the disc, you will NOT be able to restore it, unlike a conventional spoke wheel.
  • The third negative is weight, yes, for some cyclists, a couple of extra pounds on the bike will be very annoying. Well, the last minus is the price. Due to the fact that bicycles with alloy wheels are produced under well-known brands, the price for them, accordingly, is NOT low. But, since the wheels are sold separately, this minus can be excluded.

Elliptical TAPES

Pros:

  • Good shock absorption;
  • Strength;
  • Originality;

Minuses:

Nulla. feature and design

Translated from Italian, Nulla is nothing, emptiness. These are not just wheels without spokes, they even lack centers of rotation.

The rim ring is all that remains of a familiar bicycle wheel. I must say, this simplification significantly affected the geometry of the frame. now it’s just a triangle. The minimalistic design fully lives up to the name of the bike. These bicycles are currently under development, as the lack of spokes and standard wheel drive leads to some complications:

  • Installation of a transmission system;
  • Switches;
  • Brakes;
  • Depreciation.

To solve speed problems, you can introduce a planetary hub or supply an electric motor.

Design feature. The rear rim is made in the form of an internal gear, in engagement with which there is an external gear. a sleeve. The unit is located in close proximity to the pedals, which guarantees high efficiency of torque output. The forces are transmitted through the drive belt.

An alternative option is a chain drive. Principle of operation:
1. Transmission of torque from the drive sprocket to the intermediate axle. At its ends there are small and large stars.

2. Here is a large driven sprocket through the chain, the force is transmitted to the sprocket of the bushing.

3. As it unwinds, the hub engages with the rim teeth and sets it in motion.

Rollers are attached to the steering part of the frame, on which the front wheel is mounted. These rollers provide two functions. maintaining motion and turning. The front fork is missing. this is another step towards a fundamentally redesign of the bike.

Summarize. Today, a bicycle without spokes belongs to the category of rare and unique models. The main task of manufacturers is to take into account all design nuances, finalize technical details and carefully study the possibility of demand from buyers. Since these models radically change the standard approach to assembly, they can safely claim a separate class of bicycles.

Bicycle on cast wheels

Alloy wheels are an easy way to go beyond the standard. The spokes are replaced by blades, which connect the hub to the chassis. No tension adjustment in casting comments, wheels are not separable.

Bicycles on alloy wheels bear the names of well-known car brands (though in fact most of them are nothing more than low-quality Chinese fakes that have nothing to do with these brands):

Fundamental differences from knitting needles:

  • Original design;
  • Increased rigidity;
  • High aerodynamic performance.

Alloy wheels give the bike a kind of automotive luster, look cool, and attract attention. Light tuning adds efficiency to them.

Due to their high stiffness compared to a spoke design, these wheels do not spring and accelerate more easily on smooth roads, but are not at all suitable for EXTREME driving. Maintenance of such wheels is much easier, but repairing a damaged disc is impossible.

The curved blades improve aerodynamics, which should have a positive effect on bike speed. However, this advantage is offset by the increase in total mass. Casting weight to the bike is 1. 1.5 kg, while the spokes will NOT add even a pound.

The cost of the disks is quite high, especially given their unrepairability. It is unprofitable to place it on the bike separately, but you need to ride it with special care, which is generally unprofitable.

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Advantages of alloy wheels

The next type of bicycle without spokes is elliptical tape wheels. This option is also reliable, since the elliptical belts are made of special carbon fiber that can withstand heavy loads without visible problems. The advantages of such wheels are practically the same as in the previous type, since they, in their essence, are quite similar models.

Summing up, we can draw the following conclusions: if there is a desire to purchase an original vehicle, for example, which has a non-standard wheel shape or which has alloy wheels instead of spokes, or nothing is installed at all, then you can safely purchase yourself any of the above bicycles. At the same time, their price often directly corresponds to the quality, so no problems with their implementation should arise.

The bicycle has been one of the most common forms of transport for two centuries in a row. Exactly 200 years have passed since the creation of the world’s first bicycle. The first transport, which became the progenitor of modern mountain, road, BMX bicycles, was created in 1817.

During this time, people have evolved greatly, and their technologies have become more convenient and practical. Also, progress has NOT bypassed bicycles. If the first bicycle looked like a large bench with wooden wheels, now it is a stylish, convenient and practical form of transport. This article will focus on newly created spokeless bikes.

Nulla

The design of such a bike provides a high torque. The rear wheel is designed as an internal gear that engages with a hub that is designed as an external gear with the assembly close to the pedals. Who knows, maybe when such bicycles are developed to the end, it will be a new stage in the development of bicycles.

What is a spokeless bicycle??

On elliptical tapes

Wheels on elliptical bands, steel appears on the market quite recently. The design consists of ribbons twisted into loops, the edges of which are fixed to a triangle with a sleeve, which is located in the middle of the wheel.

On the other side, the bands are attached to the rim. Each wheel has three elliptical belts, which has a positive effect on the distribution of forces and uniform fastening.

These wheels have a number of advantages, it is customary to refer to them:

  • Good shock absorption. When the large is in motion, the bands are compressed, then unclenched, which significantly increases cushioning;
  • High strength. Carbon plastic, the material from which the tapes are made, regardless of how it is deformed, still returns to its original shape, and this is a big plus to strength. Such a wheel will serve for a very long time;
  • Unique style. Wheels with an elliptical look very original. It is unlikely that passers-by will pass by without looking at such an ordinary bicycle;

Modern trends: replacing a spoke wheel

As mentioned above, the first bicycles were made of wood. Moreover, not only the frame, but also the wheels were wooden. In order to prevent the wooden rim from breaking under the weight of a person, there were wooden sticks inside it. Over time, bikes began to be made of steel, and knitting needles were sewn to replace wooden inserts.

The spokes turned out to be very comfortable, so despite the constant changes in the bicycles themselves, their wheels remained as they were in 1885. But, in Nowadays, modern engineers have decided to modify the wheels.

NULLA

This bike cannot be said to be good or bad, as it is still under development. But when it comes out, it will have its fans and critics looking for cons.

Types of bicycle wheels without spokes

As already mentioned, scientists have come up with, so far, only three alternatives to the spoke wheel. These are wheels on elliptical bands, alloy wheels, and a completely new technology. Nulla, in order to understand everything, you need to consider all types separately.

Elliptical TAPES

Pros:

  • Good shock absorption;
  • Strength;
  • Originality;

Minuses:

  • Poor dynamics;

Alloy wheels

Pros:

  • Strength;
  • Aerodynamicity;
  • Attractiveness.

Minuses:

  • Poor depreciation;
  • Impossibility of repair;
  • The weight;
  • High price;

The bicycle has been one of the most common forms of transport for two centuries in a row. Exactly 200 years have passed since the creation of the world’s first bicycle. The first transport, which became the progenitor of modern mountain, road, BMX bicycles, was created in 1817.

During this time, people have evolved greatly, and their technologies have become more convenient and practical. Also, progress has NOT bypassed bicycles. If the first bicycle looked like a large bench with wooden wheels, now it is a stylish, convenient and practical form of transport. This article will focus on newly created spokeless bikes.

Pros and cons of spokeless bikes

Having read the article until this moment, it becomes clear that each of the bicycles presented above has its own separate pros and cons, so each of them needs to be considered separately.

Nulla

The design of such a bike provides a high torque. The rear wheel is designed as an internal gear that engages with a hub that is designed as an external gear with the assembly close to the pedals. Who knows, maybe when such bicycles are developed to the end, it will be a new stage in the development of bicycles.

What are the best knitting needles?

The first is the Inverted Needles. It turns out that the adjusting head of the spoke is not in the rim, as we are used to, but in the bushings. See the photo. Thus, the weight of the entire wheel is significantly reduced, and accordingly the moment of inertia is reduced.

Secondly, this is a pair-cross arrangement of the needles. In other words, the spokes on the right flange of the hub are attached tangentially to the left side of the rim, and vice versa. Thanks to this simple solution, it was possible to increase the tension on the spoke and evenly distribute the force on the rim. The overall lateral stiffness of the wheel also increases.

Thirdly, a semi-radial dialing. In it we wrote above, but let us briefly recall it again. It turns out that the left side of the wheel is ligated into one cross, and the right side has a “sun” type lacing, that is, without crosses at all. With the complex application of the above items, including this one, the lateral stiffness of the wheel increased by 20%.

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Fourth, this is the geometry of the spokes. The spokes are no longer round, but flat, which gives an increase in aerodynamics and an increase in the shock absorption properties of the rim.

Now you already know the secrets of the best and lightest wheel from Shimano.

In the fourth paragraph, we touched on the question of the geometry of the spokes, and this is a very interesting question, the answers to which read below.

It all started from the moment the wheel was first assembled on straight spokes, without a J-shaped bend in the spoke. We read the article on wheels. In which we analyzed the innovation of 29 “wheels, and that a miracle did not happen? So here is not quite the case. Some were fans of such straight knitting needles. Explaining their choice with technical qualities, while others were against it, ask the question: “Where can I get a spare spoke if an exclusive spoke of a new sample breaks?” And then, and others were right! And we will express you a purely personal opinion of the velo-travel team.

Straight spokes can indeed be pulled tighter, they are more durable and the wheels are stiffer. And it is not at all a problem with him that he carries several spare spokes, in case of unpredictable events. But the point is, the average cyclist won’t notice this on his bike. The pros are so small that in practice it is much easier and not to the detriment of putting classic knitting needles and NOT bothering. Using such knitting needles is a big sport, period.

Yes, and more, I almost forgot! We talked about inverted spokes and reduced moment of inertia, so this value is very small, which can also be neglected if you are NOT a world champion.

Spinergy. worth it or not?

Spinergy are cast wheels, about the same as on modern cars, but with a large diameter. Long ago, the wheels of cars and motorcycles were also spoked. Later, with the development of engineering, steel I will produce stamped discs, or cast “titans”, titanium alloy wheels, which are much stronger than spoked wheels, and all have the same. And so, following the development, technicians decided to install similar discs on the bicycle. They had a small number of blades, from 3 to 6, made of carbon. The aerodynamics of the wheel have indeed increased, and the “torsional” stiffness and lateral stiffness have also increased. And the cons, there are only two of them, this is a lot of weight and an even higher price # 128578;

But, but, but. If you and I are now NOT seeing bicycles with Spinergy wheels, This does not mean that they have been forgotten. Bicycle engineers are smart guys, and went to study this design further and got what they wanted!

There are two options for disc wheels: either a floor of spokes is installed with round discs, or a wheel without spokes at all, but with discs of their high-strength polymers and carbon fiber. The second case is better because the weight and moment of inertia are much less than the first.

And since it turns out that the old spoke wheel set is much better than all the new products, we consider it necessary to devote the end of the article to the description of the spoke itself.

Velo-travel.com |

Spoke set

A spoke set is a certain number of spokes located in a wheel in a specific order. The tasks of such a set are as follows: centering the rim. Positioning the rim along with the hub flanges, keeping the wheel shape, ensuring the strength and rigidity of the wheel, and also distributing the load evenly over the wheel. The wheel must be rigid in radial and lateral directions, and also have sufficient torsional rigidity. The higher the radial stiffness, the easier the wheel will endure impacts when overcoming obstacles and the less likely it is to get an egg-type deformation or even wheel breakage. A large margin of lateral rigidity eliminates the possibility of eights appearing on the wheel. But that’s not all. There are cases, due to incorrect lacing, on a bend, the tire clings to the frame feathers. This is due to the low lateral stiffness, the wheel bends and can burst. Which is very, very bad. Tangential, that is, torsional stiffness provides the ability to transmit motion from pedaling and braking. The better the wheel turns, the easier it is for the cyclist to ride!

Spoke sets are different. They differ from each other in the number of spokes and, accordingly, crosses (intersection of the spokes). Basically, the number of spokes is a multiple of four, in the radial set it is a multiple of two, and in the “Crow’s Paw” spoke set. a multiple of three.

Bicycle spokes: complete information and advice on their choice!

In the previous article, we examined such a part of a bicycle as a wheel. Or rather, not the wheel itself, but its general features and difference in size. And, as promised in the previous article, today we’ll talk about knitting needles and nipple.

And really, knitting needles. what is their direct purpose? Why spokes, not a solid disc, as, for example, in a car?

Now let’s talk about the types of wheel spacing: how, where, why?

The greater the angle of inclination of the spoke to the radius of the wheel, it can be up to 90 degrees, the more crosses are formed. Also, the number of crosses is affected by the diameter of the hub flange, rim, and of course, the number of spokes. When the spoke is close to 90 degrees to the rim, then it has the least force. Also, such a wheel is more efficient during acceleration, and braking occurs without unnecessary vibrations, and the bike stops faster. And if the wheel has the smallest number of crosses, the spokes, accordingly, will become shorter, and the mass will have less, the lateral stiffness increases.

That is why you need to choose wheels based on your riding style. Everyone must decide which set is right for him. And in order for you to better navigate and understand the advantages and disadvantages of each set, we will consider one of the types of set in more detail.

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Radial dialing, very weak but beautiful dialing. In such a set, the spokes DO NOT intersect, but go along the radius of the wheel, it turns out something like a “sun”. The spokes are short, and therefore light and aerodynamic. If you read the previous paragraph carefully, you have already concluded that due to the absence of crosses, the wheel has a large lateral and small torsional rigidity. But that’s not all the features of this set of knitting needles! The knitting needles work not only for tension, as with a set of crosses, but also for bending. Take a look at the picture and you will understand. That is why such a wheel is used only as a front wheel, and even then, very rarely, well, very rarely straight. And in order to use a similar radial set on the rear wheel, they came up with a combined set. One side has a radial set, and the other is tangential. Thanks to this, the wheel is as rigid and durable as possible.

Yes, and more! If a disc or roller brake is installed on a radial set wheel, the spokes are more likely to break during emergency braking. Therefore, only rim brakes are installed. Do you think these are all the features of this set ?? Eh, if only. Spokes tend to twist on their own, and the hub flange may NOT withstand the load and collapse at the most inopportune moment.

Let’s say we have decided on a set of knitting needles. But this is only the beginning of our journey through the world of “spokes and nipples”.

We learned that the needles work in tension. And now we will tell you what is the correct value for the pre-tension of the spokes. After all, if the spoke is overtightened, there is a high probability of breaking it, and if the spoke is too relaxed, most likely, in the first hole, your rim will simply get an eight. So that neither one nor the other happens, keep reading the article, and, as they say, forewarned is forearmed! Forward # 128578;

If the knitting needles are constantly tightened and then loosened (or this process will be arbitrary), they will NOT stretch for a long time and will burst in places of tension. There are two types of knitting needles. The first, traditional, is used in wheels with the number of crosses from 2 to 4 and tension from 40 to 80 kg / s. Well, the second method was invented by Shimano engineers and the tightening force is 120 kg / s! But that’s not all, the number of spokes has been reduced to 16 per wheel. What is the reason for the big jump in strength and the significant reduction in wheel weight? Read on!

Remember our aristocrats of the 19th century, Who rode bicycles with carriage wheels? This is the simplest spoked wheel. The structure of the wheel was something like this: a wooden rim, a hub, and several wooden spokes. The spokes in the wheel work in compression, alternately. In other words, at the moment when the spoke is at the bottom perpendicular to the ground, it takes all the weight of the bike, but the wheel spins, and the spokes somehow “alternate” and compress in turn. Everything was fine until 1820.

George Cale formulated the theory of elasticity that changed the whole world. Or rather, the idea of ​​knitting needles # 128578; The theory is interesting, but we are not in physics class, so we will show everything using a bicycle as an example. The compression spoke must have a diameter larger than the tension spoke to ensure the same strength. And accordingly, a spoke with a smaller diameter has less weight. And here it started. First, they were looking for a suitable material, because wood does not fit, they took steel as a basis, and then they began to figure out how to rewrite the compression knitting needles on the tensile knitting needles. And so, it was invented! Modern wheel lacing is a clear example.

The first wheel with such a spoke was designed only 47 years later, in 1867 by Madison Cowper, and not for a bicycle, but for an airplane chassis. Also, a pneumatic tire was installed on such a wheel. Read the following article about the development of bicycle tires.

The next major change is wheel spacing. It took place recently. Mavic has proposed a wheelset where some of the thick carbon spokes work in compression and tension.

Types of knitting needles, their structure and material of manufacture

The spoke has two components, this is a long rod, which has a thread on one side and a head on the other side, bent at an angle of 90 degrees to the rod, and from the nipple it is a head that is screwed onto the threaded part of the rod. Spokes and nipples are made from different materials, the cheapest are made of steel, which is very heavy and tends to rust quickly; nickel-plated bronze, or brass; and also from expensive aluminum. Still, the best material for the spokes is stainless steel, and for the nipple. bronze or brass.

And in cross section, the needles can have a constant circular cross section, as well as a variable one. This is the case when a few centimeters from the edge of the spoke the spoke diameter is one, say 2.2 mm, and the central zone has a diameter of 1.8 mm. The aerodynamics of these spokes are much better, the weight is less, and the stiffness characteristics are the same.

And now, if you have read up to this point, it means that it was not in vain that we wrote the article, and you became an order of magnitude better, having a useful baggage of knowledge in the knitting needles. Know how to use it correctly, this is the most important thing. Want more famous? Subscribe to the mailing list and all new articles will instantly come to your mail! And then we will talk about bicycle rims, it will be interesting and useful.

Good luck on the road! And finally, a small thematic !