What is gear shifting
The essence of switching speeds is to drag the chain from one star to another. Various combinations of front and rear sprockets allow you to regulate the cyclist’s load. But first, let’s turn to the bike drivetrain.
The transmission is all the parts and assemblies of the bicycle that provide the transfer of energy to the rotational movement of the rear wheel. The transmission consists of a carriage, a system of connecting rods, a chain, sprockets or cassette (or ratchet), front and rear derailleurs, as well as shifters (they are also sometimes called shifters).
Gear shifting occurs through the shifters located on the steering wheel. Using the rear derailleur shifter, located on the right handlebar, the chain is thrown between the rear sprockets, and using the front derailleur shifter (it is on the left on the steering wheel) between the front sprockets.
Most multi-speed bikes have three drive sprockets and six to eight driven sprockets. The fore stars are counted from small to large, and the rear stars, on the contrary, from large to small.
External switching mechanism
This type of derailleur is used on most multi-speed bikes, from city bikes (eg Forward Dortmund 28 2.0) to mountain bikes (eg Forward Apache 27.5 2.0 disc). Gear shifting is carried out using the front and rear derailleurs.
Front derailleur The front derailleur transfers the chain between the chainrings. The derailleur design has a moving frame within which the bicycle chain runs. When shifting gears with a shifter, the frame moves and becomes above the desired star, which ensures the movement of the chain to this star.
Rear derailleur The rear derailleur is a spring-return mechanism that moves a frame (or foot) with rollers between them within a transverse axis. In one direction, the switch is moved with a cable, and in the opposite direction, with a return spring. When the derailleur is moved, the chain passed through it is thrown from one rear sprocket to another, and the chain tensioner automatically removes the chain slack.
Advantages of external switches: simple design low weight low price high number of gears
Disadvantages of external derailleurs:. highly susceptible to unfavorable external factors. need for adjustment and maintenance. risk of breakage when the bike falls. it is impossible to change gears if the bike is stationary
Internal switching mechanism
City bikes often use an internal gearshift mechanism that is hidden inside the rear planetary hub. Planetary hub bikes have only one chainring and one sprocket. The number of speeds / gears of the planetary bushings is usually from 3 to 7. The planetary hub has a rather complex internal structure.
Pluses of planetary bushings: they withstand adverse weather and road conditions well, since the mechanism and all its parts are enclosed in a case and, as a result, are reliable and durable; you can switch speeds without pedaling.
Cons of planetary bushings:. heavy weight;. very difficult repairs, impossible in field conditions.
What is gear shifting for?
Riding on a flat road, uphill or downhill requires different efforts from the cyclist. On a single speed bike, there are no options, since there is only one gear. And those who have experience riding a single speed bike know how difficult it is. But in the case of a multi-speed bike, new possibilities appear. you can adjust the load. On a bike equipped with multiple gears, for example, it is much easier to ride uphill. Let’s figure out how the gearshift occurs.
Types of speed switches
There are two main types of speed derailleurs. external and internal shifting.
Correct star combinations
Choose speeds based on the terrain and your physical capabilities, and so that the chain does not tilt. You can make sure that there are no distortions simply by looking at the chain. If it moves parallel to the frames of the front derailleur, then the selected speed is optimal. Skew occurs when the chain is on the front large chainring and the rear chainring is also large.
Let’s see which sprocket combinations are applicable for a bicycle with three chainrings and eight chainrings. The main principle is simple: it is necessary that the combination of front and rear sprockets is always approximately in the same vertical plane.
The large chainring is matched with 4-8 rear chainrings. This combination is optimal when riding on a flat road.
The middle chainring is matched with the 3rd to 6th chainrings. This combination is suitable if you are riding on lightly rough roads, or if you want to give yourself more physical activity while riding on a flat road.
The small chainring is matched with 1-3 rear chainrings for uphill climbing. In this case, much less effort is required from the cyclist when pedaling, but more frequent pedaling.
Incorrect combination of front and rear sprockets, leads to a strong misalignment of the chain, shortening the life of not only the chain, but also the derailleurs.
Bicycle Handlebar Adjustment Tools
When buying this type of transport, you always need to be prepared for the fact that you will initially have to study the instructions, technical settings. Especially how to raise the handlebars on your bike. In such situations, you cannot do without a special set of tools. So, in order to change the position of the steering wheel, the following devices are required:
- a set of hex keys of different sizes;
- a tension limiter that allows you to keep the thread in the desired position while working with some parts;
- adjustable wrench of standard size;
- set of wrenches with a star-shaped head.
It is important to note that depending on the bike model, the adjustment has its own specifics. For example, if the question concerns how to raise the handlebars on a mountain bike, then here it must be located at the same level with the saddle. If a speedboat ride is planned, then it is recommended to place the steering wheel above the seat. The position directly depends on the type of riding and the manipulations carried out while driving the bike.
How to lower the steering wheel?
The task is quite simple to cope with. You just need to do the following:
- The center fixing bolt at the top of the steering column is loosened. It is not recommended to completely unscrew this element, since a special wedge-retainer may come off, which will lead to unforeseen consequences.
- The steering wheel is lowered to the desired level, aligns with the front wheel.
- The center bolt is tightened. It should be fixed in such a way that the structure does not give backlash.
about mountain bike Stels
How to raise the steering wheel on Domestic bikes Stels arouse wide interest from consumers, since they are one of the best solutions in terms of price and quality. The question of how to raise the handlebars on a mountain bike of this brand often arises from buyers. Some cyclists find it impossible to get the job done. However, there are still several possible solutions.
Mountain bikes of the popular Stels brand do not differ in a wide range of raising and lowering the steering column. Therefore, when choosing a bike of a specific model, it is better to immediately dwell on the optimal frame number, which most closely matches the parameters of the body when the seat is set to the optimal position. It is desirable that the position of the cyclist’s back is at an angle of approximately 40% in relation to the frame.
If you have difficulties with how to raise the handlebars on a mountain bike “Forward”, “Stealth”, “Merida” or models of other brands that are in demand in the domestic market, you should once again look into the bike’s passport. It is in the technical documentation that the optimal method for adjusting certain parameters of two-wheeled vehicles is indicated, and valuable advice on maintenance is given.
Despite the fact that the bicycle is a dangerous form of transport, its popularity is growing every day. However, in order to warn yourself against herbs and be sure of your safety, it is advisable to familiarize yourself with the technical characteristics and study the design. Particular attention must be paid to control and to choose the most optimal level of the steering wheel and seat for yourself.
The installation of the steering system in one position or another largely determines the correct seating position of the cyclist. Therefore, the question of how to raise the handlebars on a mountain bike remains relevant for many bike owners. Taking the task seriously can relieve tension from the back and arms, which will improve the overall level of comfort while riding.
Can the handlebars be raised on a mountain bike? It is no secret that the possibility of adjustment and its degree depend on the model of the two-wheeled vehicle. Modern mountain bikes allow extremely limited adjustments.
The higher it is, the more difficult it is to control the bike on the climbs, and the lower it is, the more problematic it is to ride on a flat track. In the latter case, the cyclist improves aerodynamics, but at the same time slightly impairs the view for himself.
How to raise the handlebars on a mountain bike?
To adjust the position, you first have to disassemble it. Only such a solution allows you to change the position of this structural element.
As a rule, the steering system on modern mountain bikes is fixed in the side part by several and one. in the central. The presence of the last mount allows you to eliminate backlash, and other holders fix the steering wheel at the required height.
RAISE Your Bike Handlebars for a UPRIGHT Sitting Position
To figure out how to raise the handlebars on a mountain bike, unscrewing the side elements will allow. After completing the operation, it remains to move it to the desired height. In this case, you should be guided by special marks, exceeding the level of which is prohibited by the manufacturer.
Adjusting the bike and preparing for the ride
Seat adjustment. The saddle is adjustable in three directions.
The height of the saddle should be such that the foot can freely reach the pedal with the heel in its lower position. It is advisable to adjust the saddle in the shoes in which you will ride. If the saddle is set too low (the cyclist sitting in the saddle reaches the ground with his feet). the muscles of the legs will tire faster, as the legs will not straighten and the muscles may “clog”. Only representatives of extreme sports lower the saddle low. It is not recommended to set the saddle too high. First, the foot will not reach the pedal. there is a danger of overloading the muscles of the back, as the cyclist will twist when pedaling. Secondly, the landing will be too high and it will be difficult for you to maintain balance when starting and dismounting from the bike. In order to set the saddle to the required height, you need to unscrew the bolt in the seatpost of the frame (or unscrew the eccentric). you will have a saddle with a seatpost attached to it. (Generally, the seat post will move freely in the seat tube, but it also happens to get stuck (due to rust, etc.). In this case, grease can be used. After pulling out the seat post, be sure to wipe it off. remaining grease).
Adjust A Bike’s Handlebars Attached To A Threaded Steerer
So, you find the right position (pay attention to the risks on the seatpost.cannot be extended higher than the inscription), and fix the seatpost by tightening the bolt or eccentric.
As a rule, the saddle is installed horizontally relative to the ground, although many find for themselves other positions. If the toe of the saddle (the front of the saddle) is too raised. there may be a feeling of falling back when driving, if, on the contrary, you are too inclined, you slide forward. Both are inconvenient when riding, so we recommend that you mount the saddle in a horizontal position.
In order to adjust the saddle position, the saddle clamping mechanism in the seat post must be loosened. unscrew the corresponding bolt / nuts, set in a convenient position and secure by tightening the bolt / nuts. (for classic fastening, box or open-end wrenches are needed to unscrew two nuts, to adjust a bolted saddle, use a hex wrench to loosen the bolt tightening).
Saddle adjustability back and forth is usually limited to a few centimeters. But here, too, there are rules. Experienced bikers give this advice: the horizontal position of the saddle should be adjusted so that the distance from the elbow to the fingertips is no more than from the toe of the saddle to the stem. In order to adjust the position of the saddle, you must do the same as p. 2
After each seat tilt adjustment or front-to-back adjustment, check to see if you have tightened the seatpost lock well. Bicycle saddles “love” to loosen up, and if you ride for a long time with the saddle in a weakened position, a special notch can wear off and the saddle will no longer “twist” under any effort.
The height of the handlebars depends on the riding position you are going to ride. If the steering wheel is raised too high, it becomes difficult to move uphill; if the steering wheel is lowered too low, it is more difficult to control the road situation. When riding on roads with car traffic, it is recommended that the cyclist’s back is at an angle of approximately 30 “to the vertical. For fitness, light walks, a 45”.60 “/ 60”.90 “body tilt is recommended. For older people, children, the recommended body tilt is 60 “-90”.
For road bikes, the rider’s seat should be lower.
Not all bicycles have wide enough handlebar adjustments. On bicycles with threadless steering columns, the handlebars can only be raised a few millimeters by installing additional spacer rings. To reduce the height of the rudder, you can only put the stem in a different type. However, many bicycles have a stem design that allows the height of the handlebars to be adjusted between 25-35mm. To raise or lower the handlebar, loosen the stem bolt with a hex wrench. Set the desired height and tighten the stem bolt.
There are rudder center marks on the steering wheel. The handlebar is usually installed correctly if these marks are hidden where the handlebars are attached. However (very rarely) it happens that these markings are incorrect. If you find a manufacturer’s oversight by eye, you will have to center the steering wheel with a tape measure.
Centering the front wheel relative to the steering wheel.
Having slightly loosened the handlebar fasteners, place the front wheel between your legs (the bike facing you) and center it perpendicular to the handlebar.
Checking the adjustment of the brake system
Spin both wheels with the brakes released. The brake pads should be 1-3 mm from the rim and should be close to the rims with their entire plane. They should not touch the tire or be below the rim.
Press and release the brake levers several times. They should not rest against the handlebars (fall through) and should not sink, that is, with difficulty returning to their original position. Brake levers should not be too soft or too tight.
Check for looseness and loose bolts
Make sure the handlebars are firmly attached to the stem and the steering column has no play
Check the reliability of the fastening of both wheels in the forks (believe me, it is not the most pleasant feeling when, for example, the front wheel jumps out and rolls ahead of you!).
Check that the seat post is securely in the frame tube and the seat in the seat clamp.
Check tire pressure and condition of tires
The recommended pressure is marked on the sidewall of the tire. Do not inflate tires above the maximum pressure. High pressure is consistent with driving on hard, dry surfaces. Low pressure is suitable when driving on snow, dry sand, slippery and muddy roads. It is best to inflate the tires with a pump with a pressure gauge. If there is no pressure gauge, then you can roughly estimate the amount by which the tire deflects under the weight of the cyclist. it should be within one centimeter.
Check the condition of the tires, and in case of heavy wear, replace them with new ones. Worn tires. a common cause of unexpected camera punctures.
If you plan to ride in the dark, check the health of the lighting fixtures and reflectors and the level of battery charge.
Forward handlebar adjustment. How to raise the handlebars on a bike: tips and tricks for cyclists
In general, this type of headset is standard on mountain bikes. This mechanism is somewhat heavier and more complex than the previous type of bicycle headset, therefore the process of increasing the height of the handlebars will be somewhat more difficult. The handlebar is attached to the tube on mountain bikes using an additional element. the stem, which is used when the height of the handlebar changes.
You can change the height of the steering wheel with a threadless column as follows:
- Unscrew the anchor bolt with a hexagon (a kind of cover at the top of the pipe).
- Remove the tightening bolts that secure the stem to the head tube.
- Remove the steering wheel with the stem. this must be done slowly and very carefully.
- Add staging rings to the pipe, or remove unnecessary ones. it all depends on whether you need to change the height of the steering wheel in the direction of decreasing or increasing.
- Set the stem to its original place.
- Tighten the tightening bolt first, then the anchor bolt.
Please note: sit is necessary to tighten the bolts when changing the height of the handlebar on a threadless column carefully. on such bicycles, with a strong tightening, the parts become unusable. After completing the procedure for adjusting the height of the handlebars on a mountain bike, it is imperative to adjust the level of the handlebars in relation to the front wheel of the vehicle. it is very easy to displace the structure. If it is necessary to slightly correct the position of the steering wheel, then the anchor bolt and the mounting bolt are slightly unscrewed, the steering wheel is straightened to the desired position, and then the bolts are tightened again.
It is necessary to tighten the steering wheel not only in order to lower or raise it, but also in case of its scrolling. In order to tighten the handlebars on a children’s bike, you need a set of hexagons.
What is the adjustment of the handlebar of a bicycle
There are several ways to adjust a bicycle handlebar:
- by the height of the steering wheel. this value determines the slope under which the body of the cyclist and his arms will be while riding;
- by the angle of inclination of the handlebars. the angle at which the handlebars are set / adjusted depends on which muscle groups will work during the ride, how quickly the cyclist will get tired.
How to properly adjust the handlebars in the indicated directions? Everything is strictly individual. a lot depends on the style of riding a two-wheeled vehicle:
How to Raise your Bike Handlebars. Stem Extender Install. EASY!
- if the cyclist just enjoys a leisurely walk, overcomes distances without time pressure, then the steering wheel of the vehicle rises, the angle of its inclination becomes small;
- if the cyclist goes in for sports, he has to overcome different distances for a while and demonstrate his speed capabilities, then the handlebar will lower, and its angle of inclination will increase.
How to determine the position of the steering wheel? The “starting” point is the bicycle saddle. if the handlebar is located above it in level, then the latter is adjusted to increase, and if the handlebar is located below the level of the saddle, accordingly, the adjustment was low.
How to change the height of the steering wheel
As a rule, the height of the bicycle handlebars is adjusted using special settings on the steering column. they are present in almost all models of a two-wheeled vehicle. But first you need to understand what type of steering column is installed on your specific bike: