Why you need a bicycle stem

Bicycle handlebar removal: what is it for and how to choose?

need, bicycle, stem

The stem is a vital part of the bike. It connects the steering wheel itself and the fork stem, essentially representing the steering bracket. Accordingly, selection becomes a very important task.

Dimensions (edit)

As for the size of the steering rack, it can be between 5mm and 140mm. Products with a length of up to 40-60 mm are called short and are mostly installed on city bikes. Universal holders are available in sizes from 60 to 100 mm. The size of the middle steering brackets is between 100 and 120 mm. The long handlebar bracket is most often installed on trail bikes, its length can be from 120 to 140 mm.

And also the difference in diameter should be noted. The 25.4 mm holder fits on bike bikes designed for city travel. For mountain bikes, 31.8 mm parts are intended. And, finally, for trails. the indicator is 35 mm.

Design

When it comes to road bikes, owners should opt for a long stem. This is due to the fact that driving on the highway requires significant speed and excellent aerodynamic performance. The design of the bike, as well as the position of the rider, affects the air resistance, reducing it. In this case, the extended stem provides a correct fit. The angle can be adjusted, accordingly, the fit is adjusted according to the height.

When it comes to mountain bikes, the medium-sized handlebar holders should be considered. And while long stems reduce airflow resistance, shorter stems can improve the bike’s maneuverability. When it comes to brackets of medium length, they successfully combine the main advantages of both types. With their use, you can adapt to the conditions of the territory where the movement takes place, respectively, the ride will be safer and more dynamic. If the bike does not have a special purpose, a universal stem should be installed on it.

This element is divided into types depending on the method of attachment. It can be fixed with 1, 2 or 4 fixing bolts.

The stems are divided into short, medium and long stems. There are also universal models. Some of them are non-adjustable, while others can change both the angle of the steering control and the distance to it. This is a very important point, since changing the angle allows you to make the position of the handles more convenient, respectively, the cyclist will be more comfortable and safe behind the wheel.

Depending on what type of handlebars the bike has, the holder is also selected. For example, for compact bikes, a folding handlebar, which is fixed on a telescopic bracket, is most suitable. With its help, you can not only fold the handles, but also remove the steering wheel itself if necessary.

How to set the length of the bracket?

Ease of control of the bike, its maneuverability and the rider’s position most often depend on the height and angle of the steering wheel. Stem length refers to the distance from the center of the handlebar to the center of the headset. And the more significant this indicator, the more the person will sit at a greater inclination. It should be noted that when driving on an uneven road, a large stem is very inconvenient, but cyclists who have been driving for a long time feel comfortable with it.

The short stem is most relevant for people who value agility. In this case, the steering wheel is placed as close to the chest as possible.

The stem length is measured as follows:

  • for a start, the saddle is installed in the most comfortable way for the bike owner;
  • after that, an elbow is applied to the edge of his nose. with an ideal distance, the rider should reach the steering wheel with his fingers.

If you are planning mainly walks on city roads, the steering wheel should be a little closer to the axis, and with long movements, on the contrary, a little further from it, which will allow the human body to be as horizontal as possible. In this situation, you can allow your fingers to touch the middle of the mount.

It should be noted that it is most convenient in most cases when the steering wheel is at a distance of 100-120 mm from the steering axle. If the cyclist feels uncomfortable with different mounting options, this may mean that the frame is too small. In this case, it makes sense to look for its other options.

In addition, there are a few more nuances to consider. If a person is going to choose a long bicycle stem, he should be aware that the body will move in this case. Accordingly, the load on the front wheel will be increased. This can create certain difficulties when descending the mountain. However, on the climbs, on the contrary, it is very convenient.

The horizontal tilt of the rider’s body allows the handlebars to be far away. In this case, the load on the hands becomes many times greater.

With a short steering rack, the center of gravity shifts back. This is handy when demonstrating bike tricks, as the front wheel can be easily lifted. In addition, the steering wheel twists more conveniently, respectively, it is easier to maintain balance, since the bike does not tilt to the side.

Features of choice

This element is present on almost all types of bikes. But its characteristics may differ depending on the species. These are indicators such as material of manufacture, production technology, size, adjustment and inclination.

To select the stem, you should also take into account the diameter of the mounts: on regular bikes and mountain models, it can differ by more than 60 mm. In this regard, the choice becomes much more difficult. Short bike carriers are most commonly used on street bikes and stunt bikes.

If the binding is small, handling will improve and the rider will sit as straight as possible. In this case, the deflection of the frame is ensured even in the case when the steering wheel is turned slightly. This is very important in urban road conditions, as well as in the case when it is planned to overcome obstacles.

Materials and technologies for the manufacture of the stem

Like other bicycle elements, stems are made from steel alloys, aluminum alloys and carbon. Despite the fact that weight in this part almost does not play a role, aluminum stems are preferable.

In addition to the material, the offsets also differ in manufacturing methods. There are three types of stems. welded, forged and milled.

  • Welded stems are the cheapest to manufacture and have the most size combinations. The weak point of such products is naturally the seams, on which cracks often appear.
  • Forged stems are the preferred stem type as they have no welds and are therefore lighter in weight. And given the vulnerability of welds, even stronger.
  • Mixed. for such parts, the handlebar clamp is welded, and the fork clamp is located directly in the stem of the stem. Considering that it is the seam on the fork clamp that carries the greatest load, such overhangs can be considered comparable in reliability with fully forged and at the same time having less weight relative to welded.
  • Milled stems are made by milling aluminum castings. These stems are the heaviest, but at the same time the strongest. This type is ideal for trial bikes where reliability is key.

Welded stem Forged stem without welds

Milled stem Forged stem with welded stem clamp

Stem Mounts and Sizes

The stem is attached to the fork stem with two bolts, and the clamp hole can be 1, 1.5 and 1.125 inches, the latter being the most common. In addition, the stem can be integrated into the steering column pin.

The attachment to the handlebars can have an inner diameter of 25.4, 26 and 31.8. According to the number of steering wheel mounting bolts, there can be single-bolt, double-bolt and four-bolt.

Bicycle handlebar stem

Bicycle stem is designed to attach the handlebars to the vertical steering column post or directly to the fork stem. This part of the bike is responsible for the correct fit of the cyclist. Combined with the right frame and saddle, stem can significantly improve ride comfort, reduce the rate of fatigue and improve pedaling efficiency. In addition, the bicycle stem also affects safety. The part must be made as high quality as possible and not have a factory defect.

It should be noted that the stem is not always present on the bike. On kids’, touring bikes and road bikes, the handlebars attach directly to the vertical steering column post. And it also happens that the stem is a non-removable part of the steering pin, i.e. integrated into it. In the latter case, it is not possible to replace the stem without replacing the stem. In general, there are a huge number of offsets, they differ in the material of manufacture, size and fasteners.

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Steering column pin without stem

Bicycle stem integrated into the steering pin

Stem length

It is the length that is the main indicator of the offset influencing the convenience of the cyclist’s landing. Only by choosing the right length can we consider that the takeaway has been acquired successfully. It should be borne in mind that the correct length is measured from the center of the clamping point of the fork stem, to the center of the handlebar clamp.

Depending on the individual characteristics of a person, the stem length varies from 0 to 140 mm, and most often comes from 35-100 mm. But the length affects not only the comfort of the fit, but also the handling. So the shorter the stem, the better the handling and vice versa. And the longer the stem, the better the aerodynamics. That is why long stems are often used on touring and road bikes, and short stems on mountain bikes. Very short or zero stems are used on bicycles subject to maximum stress and for aggressive riding where increased maneuverability is needed.

Adjustable bike stems

Adjustable stems allow you to change the height and angle of the rudder. But despite the obvious advantages, such a stem is not recommended for installation on bicycles subject to even light loads. Such offsets are not very reliable, and in some cases may even turn out to be dangerous.

stem with tilt angle adjustment

Adjustable stem length

Bicycle stem selection

When choosing a stem, you should pay special attention to its length. To find the correct length, you can use the following method. Press your elbow against the saddle of the bike, if your fingers reach the tube of the handlebars, this stem is ideal for mountain bikes. If you are choosing a stem for long road walks, then your fingertips should reach the middle of the stem.

It will be ideal to use an adjustable stem first, and when in the process of use you select the necessary position adjustments, change it to a non-adjustable forged stem of the same dimensions.

Why you need a bicycle stem

Sooner or later, every cyclist thinks about the choice. Long stem or short stem? Today, most professional road cyclists use long, very long stems:

The latter, by the way, with a height of 179 cm, uses a 50 frame size.

But if you pay attention to the mountain bike, then the situation changes somewhat:

Nino Schurter. 90 mm Manuel Fumic. 90 mm Julien Absalon. 100 mm

That being said, almost all riders use the recommended frame size.

The situation is completely different in DH, the overhang there, with incredibly rare exceptions, exceeds 50 mm in length.

To continue the analysis of the causal relationship, we need to understand several nuances: The “Takeout-Rudder” system is considered without taking into account the indicators that are more important for control: Trail, HeadTube Angle, Rake, Front-Center, etc.

The length indicated on the stem will not at all provide you with the proper increase in distance. You can verify this by going to a special calculator. Manufacturers indicate the absolute length, because the real length (Reach) will depend not only on which side you install the stem, but also on the angle of the head tube.

The change in fit when turning depends on the length and angle of the offset. Although this figure is very small, nevertheless, twice the length of the offset provides a smaller change in landing (

Installing a wide handlebar will require replacing the long stem with a shorter stem.

With increasing length, the distance covered by the center of the steering wheel also increases.

With the same steering resistance, you will need to spend more effort to grab the wheel (!) To move the long stem.

The wider the handlebars, the less impact the stem will have. The stem-rudder system creates an imaginary hypotenuse, the length of which will determine the accuracy and speed of control. For this reason, non-stem handlebars are not completely insane. The combination of a long stem and handlebars will give you a precise handling and a sense of imposing, as if you are driving a truck. Short stem and handlebars. give the sharpness in control, typical of sports cars.

Another factor that varies with stem length is the offset of the center of gravity. The longer the stem, the more you move above the front wheel. The more weight, the better the grip of the front wheel.

So why do Pro riders use long stems? There are several reasons for this:

2) Clutch. With a loaded front wheel, the total braking force and stopping distance are reduced. At the same time, in corners, the likelihood of a skid of the front wheel is also reduced.

3) Aerodynamics. Remember the smaller frame sizes? The smaller the frame, the smaller the head tube (G), but the longer the stem is required to sit long enough on the bike. Professional riders lower their handlebars so low that they are less and less likely to be seen holding on to the bottom. Extremely low seating position does not make it possible to ride comfortably while holding on to the Drop, which is also why “Compact” handlebars have become much more popular than the classic ones. In addition, for the sake of streamlining, they use narrower handlebars than before, which means that the stem for them needs a little longer.

What’s The Best Stem Length For You? | GCN Does Science

4) Weight distribution. With an increase in the stem length, the load is redistributed from the saddle to the handlebars. Yes, but will the same thing happen if you choose a slightly larger frame size? Not certainly in that way. As we found out, on large frames the head tube is also higher, which means that the position of the body will be more vertical. And with a short stem, you are unlikely to be able to lower the handlebars much lower.

5) Weight and rigidity. Different frame sizes usually have different weight-to-stiffness ratios. Some manufacturers, however, keep one of the indicators unchanged, but in this case, either the bike becomes less rigid or heavier. Of course, in terms of stiffness to weight, smaller frame sizes will have an advantage. But perhaps this is not the most important factor. And maybe the most important?

Takeaway: So, in road cycling, a smaller Frameset with a longer stem makes the bike overall more aerodynamic, with better grip and handling.

1) Balance and Banik. The long stem helps to maintain balance uphill, but it is not at all useful when the front wheel needs to be pulled out, unless your stem is turned up, like on trial bikes. Those, in turn, have precision in control, and can easily lift the front wheel.

2) Offset. A heavily loaded front wheel on the descent is not the best option, everyone remembers where the rider’s pelvis moves on the descent? Too long stem makes it impossible to maneuver behind the saddle.

3) Front-Center. Control. Many manufacturers (Cannondale. OutFront Geometry Technology, Specialized, Scott). began to change the front part, so that the distance from the center of the carriage to the axis of the front wheel increased. This indicator grows steadily with decreasing head angle (69.5 ° ScalpelSi) and also thanks to a longer upper frame tube.

With the advent of 29 wheels and increasingly difficult tracks, it became necessary to use a wider handlebar, which means that the stem under it will be slightly shorter.

The question arises, which is better? Short stem extended Front-Center VS Long stem and short Front-Center?

Of course, the handlebars and stem cannot be considered in isolation from the bike. As I wrote at the very beginning, indicators such as: Trail, HeadTube Angle, Front-Center are much more important. The new extended front frame geometries have much better downhill handling, especially at high speeds, which is difficult to compensate for with stem length. In my opinion, the more technical the track, the more difficult and dangerous the descents, the less the role of aerodynamics, the more optimal the combination “Short stem extended Front-Center”.

Why don’t many MTB riders use a short stem? The answer to this question can be found in geometry. Each frame size differs on average by 2-3 cm in ETT, in addition to everything, on a larger size the head tube is a couple of centimeters higher. Depending on the length of the arms and torso, the fit of even people of the same height will change. Those with longer legs will need a shorter stem, and those with longer arms and torso will need an appropriate stem. As a result, a person is left with a choice whether to sit higher with a short (60 mm) stem, or in a comfortable fit with a 90 mm stem.?

What is a stem? How to choose the right stem?

A useless part or an important part of a bike? Let’s try to figure it out. The stem is the part of the bicycle that secures the handlebars to the steering column. Has in the parameters: the diameter of the fastener, length, angle of inclination, the number of fasteners and material of manufacture.

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The stem is used for comfortable placement of the cyclist, a comfortable fit. You can pick it up exclusively individually, because all people have different proportions.

The correct name for the stem is the steering bracket, but it is rarely called that. The handlebar stem determines how far the handlebars are from the cyclist. The further. the more stretched the rider’s position, the closer, the higher the controllability. The shortest and most powerful stems are available on downhill, street and BMX bicycles. they need mechanical shock resistance and high controllability. City bikes are also equipped with short stems, for them it is just as important to have good maneuverability as for stunt bikes, in this they are similar.

The stem length varies from 0 to 150mm. If the stem length is small and the rider’s riding position remains uncomfortable, then the bike frame has been chosen incorrectly and a larger frame is required. As a rule, stems from 60 to 100mm are placed on MTV bicycles, the shortest on city bikes, and 100-140mm on road bikes.

By their design, the stems are divided into adjustable and non-adjustable. The adjustable stem allows you to change the fit: for long trips, a more extended fit is required, to improve the aerodynamics of the bike, for urban trips such a fit is not necessary. Experienced cyclists often refer to these stems as pampering. the cyclist needs to know which position is comfortable for him and what size of unregulated stem he needs. Plus, the adjustable stem can be dangerous if the bike falls.

The longest handlebar brackets are used on road bikes. Besides the fact that the frame has good aerodynamics, the long stem improves it due to the bent seating position of the cyclist stretched and pressed against the frame. Stem angle allows you to adjust the fit to the height of the cyclist.

How to choose a stem? Adjusting and replacing the bicycle stem.

Stem selection, adjustment and replacement.

The simplest and most well-known stem selection technique among cyclists is the “elbow method”. In order to choose the right stem, you need to lean your elbow against the extreme forward point of the seat and position your hand so that it reaches for the handlebars. If your fingers touch the handlebars, then the length is optimal.

In case you want to have a more extended fit, your hand should be slightly off the handlebars. Do not overdo it! If you choose the wrong stem, you will get the wrong fit, and as a result, you will not get comfort when riding a bike, at least. You can also get pain in the neck, back or hands.

When buying a bike or stem separately, pay attention to the number of attachment points on the stem. The least reliable (and cheapest) will be a single bolt mount. Better to choose stem with 2 or 4 bolts. Inspect the part from all sides: the bracket should not have cracks or damage. If there are suspicions, it is better to replace the part.

The welded stems change with the fork, the bolted brackets are removed and attached to the stem of the new fork. It is very simple to put this part, the main thing is to choose it correctly.

At first glance, the detail of the steering bracket may seem insignificant, but it plays an important role in the rider’s fit, ride comfort and riding pleasure. Therefore, do not neglect it and choose carefully when buying. And have a nice ride!

“Ram’s horns” are:

There are many variations of these handlebars from various manufacturers with various bend and tilt options.

Ideal for road racing. This shape provides four possible hand positions. A large number of possible positions allows you to move along the road for a long time without feeling discomfort in your arms or back.

What are bike handlebars?

Mountain or straight rudders

Such a rudder is a straight or slightly curved tube at the stem attachment point. It is installed mainly on mountain or hybrid bikes. Large levers and a medium landing slope provide better bike control over rough terrain. Most often found in extreme mountain disciplines and cross-country.

The saddle mount ensures that the rider is positioned at an angle of about 45 degrees, so he has good visibility, the ability to pedal quickly and is less stress on the spine. Mountain rudders are well suited for off-road use. It is convenient for them to quickly maneuver in the city or on a narrow mountain path.

The drawbacks of this form of steering only affect very long journeys. When the inability to reposition the arms and back occurs, it leads to numbness and pain. To avoid this, the handlebars can be fitted with removable horns that allow you to relax on relatively flat sections of the path.

There are different varieties, for example:

  • Flat. they are more sporty, more straightforward, they are installed mainly on MTB, mountain and hybrid bicycles for measured and not aggressive riding.
  • Risers are more comfortable, wider than the previous ones and with a slight rise. Typically, these handlebars have a stem diameter of 25.4 mm and a diameter at the ends of 22.2 mm.

Bicycle grips and handlebars

Bicycle grips are the rubber (sometimes foam) ends of the handlebars that the cyclist holds onto while riding.

All models differ in weight, material, quality of the outer and inner coating and the place for a certain number of fingers. The main purpose is to firmly fix the hands on the steering wheel in all weather conditions.

Soft rubber grips are more comfortable on the hands, do not chafe the skin, but their lifespan is shorter than hard ones. Hard rubber handlebars last a very long time, but they can rub the palm bumps and finger bases during long driving.

Types of offsets by type of manufacture

The stem is bolted to the bike. There are several options:

  • Single bolt;
  • Double-bolted;
  • Four-bolt.
  • 25.4mm mounting feet. This type is found on urban and stunt (BMX) bikes.
  • 31.8mm. most mountain bikes.
  • Stem under the steering tube with a diameter of 35 mm.

The stem material can be different:

  • aluminum;
  • steel;
  • carbon.

Cowhorn steering wheel

This type of rudder follows the curve of the buffalo horns. The name confirms this. This type is suitable for cycling and highway travel. Convenient in that it is similar to a straight rudder with horns, but does not require additional components (namely horns). Therefore, it is lighter than its counterpart with installed horns.

Stems with a diameter of 25.4 mm are suitable for them. or 26mm, road brake levers and shifters with 23.8mm diameter.

An important point. do not rush to change the type of handlebars that are installed by default on the bike. You risk spoiling the landing. This can only be done under the strict supervision of an experienced cyclist.

Bicycle lounger

Many cyclists, including professionals, use a special handlebar attachment for their rides or competitions. This attachment. the lounger. modifies the seating position of the person, thereby reducing wind resistance and improving the cyclist’s performance. Next, we will consider what a sunbed on the handlebars of a bicycle is, why it is needed, its advantages and disadvantages.

The lounger is a “horn” attached to the handlebars very close to the stem, equipped with armrests for a comfortable ride. Horns are either curved top or straight. Curved ones are more suitable for bike travelers, as they are less tired of the hands. Straight lines are most commonly used in high speed road racing.

Thus, the cyclist places his arms close to the body and stretches along the frame, as if lying on it. That is, a person is more compactly located on the bike, which improves aerodynamics.

Material

The most popular material for the lounger is aluminum. It has high strength and rigidity. The latter is not at all beneficial: the elasticity of aluminum is very poor, and it does not absorb at all. If there is still no grip on the lounger, then your hands will not be very comfortable.

Carbon is a high-tech material that has many useful properties. First, the carbon fiber is woven in such a way that the part is the most durable. Carbon fiber is difficult to break across, so it is woven so that the direction of the threads does not coincide with the vector of the load on the part. Another important property of CFRP is its low weight. A carbon fiber bed will not add much weight to the entire bike.

How to choose

Determine the diameter of the handlebars where you want to mount the horns. If you know the steering wheel model, then you can find its parameters on the Internet. If not, then measure only with the most accurate instruments, such as a caliper. The clamps of the lounger should be suitable for this value or be slightly larger. It will be possible to put rubber pads under them if the clamp is too large.

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Now that you know the diameter of the clamp you want, move on to thinking about the type of horns you need. If you are going on long hikes, then get better curved handlebar horns with neoprene grips. They perfectly absorb vibrations for maximum ride comfort.

If you want to take part in road racing and take first places, then the best sunbed for you will be a straight one. Straight horns will provide the lowest riding position, which means you have a huge advantage when driving on the highway. Engineers claim that the speed is increased by up to 20% due to improved aerodynamics. On such horns, your hands get tired more, so if you are in no hurry, you should not buy it.

The butterfly steering wheel is another type of sun lounger. Its main feature is a wide variety of grip choices. You can grab its front bar, as on conventional straight rudders, the far bar to ride reclining, or the side bar. This steering wheel shows itself well during long driving, not only on asphalt, but also on a dirt road.

How to install

All models of sunbeds are attached to the handlebars with clamps. To prevent the clamps from damaging the steering wheel cover, rubber gaskets are placed under them.

Set the horns to the same level, ride your bike. Identify the disadvantages of this position and decide whether you need to rearrange the lounger higher or lower. Be very careful when adjusting the horns, as incorrect installation of the horns can damage your spine. It takes many people all day to find the ideal sunbed height.

Once you feel that you have found the right position, tighten the clamps firmly. You must be sure that even if you fall off the bike, the horns will not move anywhere.

Any bicycle lounger gives a huge boost to speed. This is true mainly on long lines outside the city. If you are going on a trip, buy such horns without hesitation!

What does the stem length affect?

Sooner or later, every cyclist thinks about the choice. Long stem or short stem Today, most professional road cyclists use long, very long stems:

Peter Sagan. 140 mmAlberto Cantador. 130 mmRider Hesjedal. 140 mm Filippe Gilbert. 140 mm

The latter, by the way, with a height of 179 cm, uses a 50 frame size.

But if you pay attention to the mountain bike, then the situation changes somewhat:

Nino Schurter. 90 mm Manuel Fumic. 90 mmJulien Absalon. 100 mm

That being said, almost all riders use the recommended frame size.

The situation is completely different in DH, the overhang there, with incredibly rare exceptions, exceeds 50 mm in length.

To continue the analysis of the causal relationship, we need to understand several nuances:

The length indicated on the stem will not at all provide you with a proper increase in the distance. You can verify this by going to a special calculator. Manufacturers indicate an absolute length indicator, because the real length (Reach) will depend not only on which side you set the stem, but also on head tube angle.

The change in fit when turning depends on the length and angle of the offset. Although this figure is very small, nevertheless, twice the length of the offset provides a smaller change in landing (

Installing a wide handlebar will require replacing the long stem with a shorter stem.

With increasing length, the distance covered by the center of the steering wheel also increases.

With the same steering resistance, you will need to spend more effort to grab the wheel (!) To move the long stem.

The wider the handlebars, the less impact the stem will have.

The stem-rudder system creates an imaginary hypotenuse, the length of which will determine the accuracy and speed of control. For this reason, stemless handlebars are not completely insane; the combination of a long stem and handlebars will give you a precise handling and a sense of imposing, as if you are driving a truck. Short stem and handlebars. give the sharpness in control, typical of sports cars.

Another factor that varies with stem length is the offset of the center of gravity. The longer the stem, the more you move above the front wheel; the more weight, the better the grip of the front wheel.

So why do Pro riders go for a long stem? There are several reasons for this:

2) Clutch. With a loaded front wheel, the total braking force and stopping distance are reduced. At the same time, in corners, the likelihood of a skid of the front wheel is also reduced.

3) Aerodynamics. Remember the smaller frame sizes, the smaller the frame, the smaller the head tube (G), but the longer the stem is required to sit long enough on the bike. Professional riders lower their handlebars so low that they are less and less likely to be seen holding on to the bottom. Extremely low seating position does not make it possible to ride comfortably while holding on to the Drop, which is also why “Compact” handlebars have become much more popular than the classic ones. In addition, for the sake of streamlining, they use narrower handlebars than before, which means that the stem for them needs a little longer.

4) Weight distribution. As stem length increases, the load is redistributed from the saddle to the handlebars. Yes, but the same will happen if you select a slightly larger frame size for yourself? Not really. As we found out, on large frames the head tube is also higher, which means that the position of the body will be more vertical. And with a short stem, you are unlikely to be able to lower the handlebars much lower.

5) Weight and rigidity. Different frame sizes usually have different weight-to-stiffness ratios. Some manufacturers, however, keep one of the indicators unchanged, but in this case, either the bike becomes less rigid or heavier. Of course, in terms of stiffness to weight, smaller frame sizes will have an advantage. But perhaps this is not the most important factor. And maybe the most important?

Takeaway: So, in road cycling, a smaller Frameset with a longer stem makes the bike overall more aerodynamic, with better grip and handling.

1) Balance and Banic. A long stem helps maintain balance uphill, but it is not at all useful when the front wheel needs to be pulled out, unless your stem is turned up, like on trial bikes. Those, in turn, have precision in control, and can easily lift the front wheel

2) Offset: A heavily loaded front wheel on a downhill is not the best option, everyone remembers where the rider’s pelvis moves on the downhill? Too long stem makes it impossible to maneuver behind the saddle.

3) Front-Center. Control. Many manufacturers (Cannondale. OutFront Geometry Technology, Specialized, Scott). began to change the front part, so that the distance from the center of the carriage to the axis of the front wheel increased. This indicator grows steadily with decreasing head angle (69.5 ° ScalpelSi) and also thanks to a longer upper frame tube.

With the advent of 29 wheels and increasingly difficult tracks, it became necessary to use a wider handlebar, which means that the stem under it will be slightly shorter.

The question arises, which is better? Short stem extended Front-Center VS Long stem and short Front-Center?

Of course, the handlebars and stem cannot be considered in isolation from the bike. As I wrote at the very beginning, indicators such as: Trail, HeadTube Angle, Front-Center are much more important. The new frame geometries with a longer front section have much better control performance on descents, especially at high speeds, which is difficult to compensate for with the stem length. In my opinion, the more technical the track, the more difficult and dangerous the descents, the less aerodynamics, the better the combination. “Short stem extended Front-Center”.

What is a Bicycle Stem?

Why don’t many MTB riders use a short stem? The answer to this question can be found in geometry. Each frame size differs by an average of 2-3 cm in ETT, in addition to everything, on a larger size, the head tube is a couple of centimeters taller. Depending on the length of the arms and torso, the fit of even the same height of people will change. Those with longer legs will need a shorter stem, and those with longer arms and torso will need an appropriate stem. As a result, a person is left with a choice whether to sit higher with a short (60 mm) stem, or in a comfortable fit with a 90 mm stem.?