Electric bicycles Equipped with a motor that converts electricity into mechanical energy. Actually there is no drive. the motor is usually located in the wheel hubs and immediately transmits the torque to the wheel.
Track Models Designed exclusively for high speed cycling. The design is simplified to the limit, the weight of the bike is lightweight. No brakes, fixed transmission, one gear ratio, narrow aerodynamic wheels with hard rubber. everything is done to increase driving speed.
The electrical equipment of a bicycle is headlights and flashlights. But sometimes brake lights, turn signals and decorative lighting come in addition. The source of energy is a generator, accumulator or batteries.
Generators are used on road bikes, while mountain models use batteries. The generator works only when the two-wheeled vehicle is moving, and the higher the speed, the more energy it generates. Batteries can be internal or external.
The most common headlights are those with internal batteries and handlebar mounts. They can also be used separately from the bike. The only negative in such headlights is that the emitted light is not formed in the form of a trapezoid, but a round spot is obtained.
The cost of lanterns can be completely different, it all depends on the design, material, manufacturer, etc.
External battery headlights shine brighter and last longer, but the external battery Takes up extra space on the bike, attaches to the bottle cage, or fits in a bag attached to the frame.
LED headlights are gaining popularity. They are economical, therefore, headlights with halogen lamps and incandescent lamps are practically not used anymore.
The rear and front side lights are powered by an AAA battery. The operating time of LEDs with such a power supply reaches 100 hours. Flashlights can work in two modes, in Flashing or continuous.
Dimensions are designed to improve human safety when driving in the dark. Conventional reflectors aren’t as bright as headlights. The front clearance is not necessary to install, it is needed when there is no headlight.
A hybrid two-wheeler is a combination of a road bike and a mountain bike. You can also drive it on the highway at high speed and drive into uneven terrain. Wheels have a large diameter of 28 inches, treads are medium, the frame is high, there is a suspension fork and disc brakes.
Stunt bikes are characterized by small wheels, in the order of 20 inches. ВМХ models Equipped with a mechanism that allows you to turn and twist the steering wheel in one direction without harming the brake cables.
The call is necessary so that the cyclist is noticed on the road while driving. On inexpensive models of two-wheeled vehicles, the bell is set intentionally, and on sports bikes they are very rare.
In fact, a call is NOT a necessity, in any situation you can always find a way to attract attention.
There are a lot of types of signaling devices, manufacturers offer them for every taste.
Mechanical. It is very popular as it is very easy to use. This is the bell for inexpensive bicycles. The sound is pretty recognizable. The mechanism itself is in a metal case, the sound is obtained when the tongue hits the case. There are models with a built-in compass.
You need to choose a bell depending on your riding style. For those who like to drive on the highway, it is better to purchase a pneumatic bell, for those who like city walks, there will be a suitable mechanical option, in other cases. an electronic signal.
Possibility of mounting side wheels
The main function of the additional casters is to prevent roll-over. They can be attached to any children’s bike, the main thing is to know how to install and adjust correctly.
The wheels are mounted under the nut on the rear wheel with a wrench and then fixed on the rear stays. To screw the wheels correctly, you need to rely on their size, this is 12. 20 inches.
On the bar there are special divisions for any size (lower under 12, upper under 20 inches, respectively), the nut is inserted into the desired division. After installation, setup is performed.
It is also impossible to raise the balancing wheels too high, otherwise they lose their meaning, they cease to perform their functions and will NOT protect the baby from falling.
Disc brake fork mountable. The parameter assumes the presence of special holes on the plug. The disc brake is screwed on with a suitable wrench. The installation site must be firmly fixed.
Disc brake hub mountable. The fastening of this element assumes the presence of a thread on the sleeve for installing the brake disc flange.
Mountable to disc brake frame. Rear brake mounting requires dedicated mounting points on the frame.
After installing the balance wheels, it is important to inspect the chain. it may have loosened due to loosening the nuts. Tighten the chain if necessary.
The road bike is designed to ride on a flat road surface at high speed. Cross-country driving is highly discouraged. The frame is strong and light, the wheels are thin and large diameter, the steering wheel is in the form of “ram’s horns”, everything is provided for high speed.
When buying a two-wheeled friend, pay attention to the quality of the rims, the better they are, the longer the bike will ride without problems. A bad rim affects the appearance of the “eight”.
Most bicycles are equipped with box rims with high sides and some indentations for installing tires. For road bikes, rims with low sides are used, then the tire is glued.
Single-wall rim profile is used only in cheap models, mainly modern bicycles use a double rim, which gives it more strength and durability. The double-walled rim structure is equipped with horizontal bridges, which affect the rigidity of the rim. There are also three-walled rims, but this is rare.
Instead of a chain, a shaft is used to transmit torque. This type of drive is usually called cardan, although the cardan itself is not here, a straight shaft with a transmission does all the work.
The shaft drive is easy to operate and has a long service life. The entire mechanism is protected from dirt and dust. But to change gears, additional planetary bushings are needed.
- When buying a bicycle stroller, be sure to try it on yourself, it will be an adult who will ride it. If the model does not fit in height, then it will be difficult to manage.
- Pay attention to the weight of the bike: it should be light enough so that the child can move it on his own. In addition, you need to proceed from the physical capabilities of an adult, which will take the transport for a walk.
- When purchasing a bicycle, it is worth checking how the pedals, handlebars and wheels spin. They should rotate smoothly and easily, without making any extraneous sounds. In addition, check the quality of fastening units and parts.
- The plastic frame bike is lightweight, the steel frame is heavier but also much more reliable.
- From time to time, you should clean the wheels, footboards, pedals from dirt, and lubricate the bike parts with special oils.
The seat of a tricycle is either triangular or rectangular. It is better to opt for a triangular seat, since its elongated ground will not allow the baby to slide forward onto the frame. As a rule, the seat is equipped with a backrest on which the child can lean on.
Usually the seat is made of plastic, sometimes a fabric insert or a splash of rubber is used to prevent the baby from slipping. There are seats with a soft liner, providing the child with maximum comfort.
Since the child is constantly growing, it is advisable to purchase bicycles in which horizontal (to the handlebar) seat adjustment is provided. This will provide additional comfort for the baby and will allow you to use the bike for a long time.
Initially, the handlebar serves as an additional point of support for the child, and the parent controls the bike using the parent’s handle. Then the baby independently controls the bike using the steering wheel.
Steering lock. allows you to lock the front wheel in a straight position. In this case, the child will not be able to operate the bike. This feature will allow the parent to use the bike as a stroller.
Important: it is recommended to choose bicycles with rubberized handlebar grips. this will prevent the baby’s handles from slipping off the handlebars.
It is desirable that the handlebar is adjustable in height (lift adjustment). this will extend the life of the bike for a growing child. Worth Paying Attention To The Easy Handlebar Adjustment (No Tools).
Parental Grip. Allows you to control and guide your bike. It is a bar with a handle located behind the saddle. Using the parental handle, you can push the bike or prevent the baby from driving in a dangerous direction, and also use the bike as a stroller.
Seat belts. prevent the child from falling out of the bike, even with a strong push.
A safety rim is a handrail located around the saddle of a tricycle. Serves the same function as seat belts. Relevant for the smallest children.
Helmet. protects the baby from craniocerebral injuries during a fall, and also performs a decorative function. in such a helmet the baby will feel like a real “cyclist”.
Plastic. do not have tires, are varied in color and are inexpensive. However, they are NOT shock resistant (they can crack), transmit strong vibrations to the bike and make a lot of noise.
Rubber one-piece. consists of a rigid solid rim and a solid tire. These tires do not need to be inflated and are NOT puncture sensitive. On the other hand, such wheels do not absorb shocks well and damp vibrations poorly.
Plastic rubber. consist of a plastic rim with a thin narrow rubber coating. They have the advantages and disadvantages of plastic wheels, but they smooth out vibrations a little better.
Polyurethane. consists of a rigid rim and a solid tire. Similar in properties to wheels made of solid rubber.
Rubber inflatable. consist of a rigid rim and a tire filled with pressurized air. Advantages: soft ride, good shock absorption, structural strength. Disadvantage. puncture sensitivity.
Wheel sizes are indicated in inches. The height of the bike depends on this value. It is better to opt for a bicycle with large and massive rubber wheels. Such a bike will be stable and have better flotation. A bike with small or plastic wheels is unstable, especially on muddy or wet surfaces.
How to choose a tricycle
Cycling stroller. useful for a child 1-2 years old. Has pedals, steering wheel, seat belts and a trump card. Most often completely controlled by the parent, since the child can rarely reach the pedals at this age.
Tricycle. designed for children from 2 to 4 years old. The main advantage of such a bike is stability, so no skills are required from the child to use it. In addition, tricycles with a handle can be used as a bicycle stroller.
There are models in which the handle can be removed when the child grows up to self-control the bike.
Important: the bike must be fitted with a live fitting. The kid, being in the saddle, should touch the ground with his whole foot.
- Tricycle with parent handle
- Tricycle for self “driving”
Klaxon. with its help, the child gives a signal, notifying in the approach of a bicycle. In addition, the horn serves as additional entertainment for the baby.
Fenders are plates that protect the cyclist and others from dirt and splashes flying from under the wheels while riding. Very useful for riding in wet weather after rain.
Pedal Lock. Allows you to disconnect the pedals from the wheel. Thus, they should not rotate while the bike is moving. Relevant when using a bicycle as a stroller, since the risk of pedals hitting the child’s legs is eliminated.
Important: Although pedals are unlikely to be needed for a one-year-old toddler, they will eventually start using them. It is better to choose bikes with long and wide (but not heavy) pedals. Small pedals Uncomfortable for the child. the legs will constantly slide off them.
A footrest is a platform on which a child can place their feet by removing them from the pedals. Useful when using the bike as a stroller.
Visor. protects the baby from direct sunlight and rain. It is found in various versions. an umbrella, a canopy, a folding dense hood. For more convenience, it is worth purchasing a domed awning.
Game bar. provides the child with additional entertainment and is placed on the steering wheel. Executed as switches, buttons, dials, toys.
Trunk. used for transporting goods on a bicycle. In a tricycle it has the shape of a deep tray in which it will be convenient for the baby to carry his toys.
Bag for things. plays the same role as the trunk, located on the parent handle. The bag, unlike the trunk and basket, is made of soft material and has a fastener.
The group of the cheapest bicycles is made up of Orion, Pilsan, cheap Bambi, Profi Trike, Smart Trike, TechnoK models. These are bicycles without handles for toddlers who can already ride on their own. When choosing a model, choose the most durable frame, but most importantly. comfortable for the child. Brand doesn’t play a decisive role.
Not bad tricycles with a handle and bicycle strollers in the middle price segment are the Alexis, Ardis, Smoby models. Good assembly and safety can be accompanied by minor flaws, for example, the lack of adjustment of the visor, parental handle, safety rim and second parts. With such a budget, pay attention to Bambi, Geoby bicycles, budget ProfiTrike models. These cycle carriages are often lighter in weight, beautiful in design and execution, equipped with good inflatable wheels.
Of the more expensive models, it is worth noting the brands Fisher-Price, Injusa, Kettler, Peg Perego and others. It is worth choosing bicycle strollers from specialized manufacturers, because the choice of models and is much higher there. On famous bicycles “adults” brands, for example, Schwinn, the price can be significantly overpriced.
In cycling, the most gentle technique is the circular rotation. There is no need to press on the pedals. they need to be smoothly twisting. Alternately transferring the load to different parts of the foot. At first, this process will have to be regulated by smoothly rotating the pedals so that the legs move during the ride, describing a circle along the axis of the carriage. At first, the legs will slide off, so it makes sense to stock up on contact pedals that fix the position of the foot.
The technique is designed for processes that alternate the work of different muscle groups. The rotation takes place in 4 stages:
- Climb. During lifting, flexion of the thigh and lower leg occurs.
- Push forward. When pushing forward, the foot is unbent.
- Pressure. There is a simultaneous extension of the thigh and lower leg.
- Pushing back. When pushing off, the foot bends.
To master the circular technique, it is recommended to perform exercises, which include pedaling without applying force, at the expense of the weight of the leg, alternately scrolling the pedal with one foot, circular rotation with both legs simultaneously.
To understand which parts of the foot are under stress, just take off your socks and pay attention to the dirty areas. The heels and above the metatarsal bones will be the darkest. It is these parts of the foot that hold 80% of our weight, the remaining 20% are in the toes and the central part of the foot. That is why pressing the pedals with the central part of the foot is irrational in the same way as pressing the pedals with the heel. Position your foot so that the base of your big toe is completely over the pedal axis. In addition, you need to pedal “symmetrically” with the same parts of the feet on both feet. Such a setting may immediately seem unusual, but it will definitely justify itself over time.
How to pedal on a bike
- Why do legs hurt?
- Landing rules
- Foot placement
- Circular pedaling
- Pedaling speed
- Sitting or standing?
At first glance, driving a bike is a simple matter. It would seem, what is easier? Spin the pedals and go! But how to pedal a bicycle correctly in order to overcome several hundred kilometers with pleasure and health benefits? It turns out that there are special rules for this.
When choosing a speed transmission, pay attention to the cadence. For proper pedaling, it is normal to ride in a low gear with a high pedaling frequency. For an adult, physically developed person, the optimal cadence is not less than 60 and not more than 90 rpm. You can count them with the help of a bicycle tracker or on your own (the latter, of course, is more difficult, given the fact that a lot of physical activity will already fall on you). When calculating the cadence, it is important to remember that the value of the indicator is influenced by the anatomical features of each person and the state of his health.
Why do legs hurt?
Most novice cyclists, who are primarily engaged in steering and maintaining balance, do not reach their hands (and in our case, legs) to master the pedaling technique. Such AMATEURS simply alternate pedaling and take muscle pain for granted, rather than thinking about its causes. However, any pain is a sure signal that we are doing something wrong.
Most often, sharp pain after improperly conducted training is felt in:
- Calf muscles;
- Knee joints.
Calves may ache from improper seating (unadjusted saddle height and tilt) or muscle weakness. Moreover, in the latter case, the problem is solved by training, and in the first. by careful adjustment.
But knee pain can develop into a serious disease. deforming arthrosis of the knee joint. The fact is that the muscles easily adapt to cycling loads, but the joints are unable to adequately perceive them. Historically, a person has NEVER had to bend and straighten their knees as often as when cycling. Our body is NOT adaptable for this, and the knee joints quickly “wear out”.
This problem cannot be completely cured, and you can earn such a diagnosis with the intensive passage of your first thousand kilometers. This is true, first of all, for professional athletes, but ordinary cyclists who are inclined to frequent and long walks need to take care in their own safety.
Before getting behind the wheel of your bike, make sure the vehicle you choose is right for you. To do this, place your straightened leg on the pedal in the lower position: the foot should rest completely on the pedal, and not touch it only with the toe. If you have to stand on tiptoes to pedal, adjust the saddle height. Be sure to make sure the saddle has zero slope. Only it allows you to correctly distribute the load on all muscle groups and travel long distances.
Sitting or standing?
This question can be easily answered by anyone who has had time to feel the difference: standing pedaling is much more difficult. When we stand up over the saddle, in the so-called dancer technique, both our own energy consumption and the wear and tear of the bike increase. If the pressure increases, the bike may break: the chain will break, the steering wheel will bend, the pedals are deformed. Standing position is used in EXTREME riding or on long bike cruises to change body position.
During sharp climbs, it is also not at all necessary to rise. Just relax, switch gears as you go, and take proper breathing. On a slight rise, move your hands to the steering horns and try to drive while sitting as long as possible.
In general, pedaling requires discipline and self-organization skills from a beginner. Otherwise, learning how to pedal correctly is easy. The main thing is to realize in time what harm can be done to the body if this is not done.
Why bicycle pedals spin and what to do about it
The connecting rod-pedal group is the very unit thanks to which the bicycle is set in motion. One of the problems why the bike does not ride well or does not move at all is pedaling. The problem arises unexpectedly, and with what it is connected, the concepts are not easy at once. What causes the pedals to spin, and how to fix it, will be discussed later in the article.
Why pedals are spinning idle
- Increased freewheel;
- Weak wheel spinning;
- Chain slippage in motion.
When a malfunction is detected, there is a keen desire to check the pedals, more precisely, the drive crank-pedal mechanism. To some extent, the scrolling is due to the carriage, but often the reasons lie elsewhere in the transmission:
- Rear wheel hub;
- Sprocket system. cassette or ratchet;
- Chain and chainrings.
The first reason is common for Road Bikes, Mountain Bikes, and Single Speed Bikes with Hub Drum Brakes. With prolonged use, the internal components of the bushing wear out, lose engagement with each other, due to which the torque from the sprocket is NOT transmitted to the bushing. As a result, the cyclist pedals only the stars, but not the wheel itself.
The pedals are fully spinning and the wheel does not rotate. A neglected case when the hub fails. But most often there is an increase in free travel, the bike gets under way harder, slippage appears on the move.
Cassettes and ratchets are fast bike parts. Full wear on cranks and bearings can cause chain slippage and idle pedaling. Other causes are partial wear, dirty sprockets, too much or no lubrication.
The chain is the same on singlespeeds and speed bikes, so wear and / or dirt can cause the pedals to crank in both. In the extended state, the chain hooks worse on the teeth of the stars, sliding over them. Total link length ranges:
- 304.8. 306.4 mm. normal chain;
- 306.4. 308 mm. Average chain wear. May affect torque transmission, single pedaling possible.
- 308 mm and more. the chain is worn out, causes wear on the stars, slips and flies.
Worn front sprockets, coupled with a worn chain, can also increase cranking and pedal bounce. Although the problem may arise due to accumulated dirt.
Solving the problem on a regular bike
The first, and in some cases the most correct, solution is to thoroughly clean and lubricate the transmission. Pay special attention to the sprockets and the inter-roller space of the chain. Before you clean the chain, you need to carefully dismantle it, and you cannot do without removing the rear wheel.
If after cleaning the problem persists, the wear of the chain and sprockets is high, it is worth considering a replacement. You need to install the kit immediately on the bike. The new chain will stretch quickly on the old sprockets, causing you to crank with renewed vigor.
Repair or replacement of the sleeve is a cardinal solution to the problem:
- Remove the wheel from the bike.
- Spread the sleeve.
- Inspect the bushing bearings for wear, here are the cone rollers.
When strong workings form on the arched surfaces of the part, the rollers fall through. As a result, the cone does NOT engage with the hub body. It turns out that the inner part of the bushing rotates, and the outer part stays in place or lags behind, increasing wear.
The sleeve can be sent to the workshop for cone grinding. This will delay pedal scrolling for a while, but wear will still make itself felt. There is only one conclusion. to change the part completely.
How to fix spinning on a speed bike
The main reason why pedals spin the wheel poorly on a high-speed bike is complete wear of the rear sprocket system. First, it is determined how dirty the system is and its degree of wear. How to clean a cassette:
- Take off the bike.
- Clean the space between the stars with a flat brush.
- Wipe the clove and washer with a cloth soaked in kerosene.
After thorough cleaning of dirt, check the condition of the bearings. Scattered or knocked-out parts must be replaced. The condition of the stars plays an important role. worn out teeth indicate their unsuitability. This is especially true for small sprockets. here chain slip and pedal scrolling are more pronounced.
And, finally, check the performance of the system using the speed switch: through which stars the chain slips, then they must be replaced. After cleaning and partial replacement, the system is lubricated.
Rear hubs can also fail, the problem is the same as with a single speed bike. The cassette must be removed to access the bushings. The condition and position of the bearings, wear of the cone and roller follower are carefully checked. If the bushing is clearly suspected, it is recommended to install a new part.
When the pedals just spin, it’s a sure sign of transmission wear. To prevent the problem from turning into more unpleasant consequences, you should diagnose the bike in time and fix the malfunction.