6 best speed bikes
Speed bikes are becoming more and more popular and are replacing the car for many people in the summer. They are suitable for outdoor enthusiasts and simply those who want to quickly move around the city. It differs from conventional high-speed models by the number of gears and the ability to adjust the load. A quality bike saves energy, increases speed and makes the ride more enjoyable.
How to choose a speed bike
A multi-stage transmission distinguishes it from a classic high-speed bicycle. With it, you can adjust the load. When driving up a mountain, you can put the first or second gear, which will allow you to overcome the hill without additional power costs. On high-speed bicycles it is more convenient to make long trips, travel off-road and rough terrain. When choosing, attention should be paid to the number of speeds, the size of the frame and brakes.
A bicycle drivetrain is a system of multiple parts that transfers power to the rear wheel. It includes a set of rear sprockets, chain, derailleur, cables, cable jacket. Transmissions are divided into the following groups:
- Chains are the most popular option and are found on most models. The disadvantages include only the tendency to break and the need for scheduled maintenance every 100 km.
- Belt. equipped with a planetary system containing gear wheels with movable axles. Compared to a chain transmission, the belt runs smoother, but it is produced less often due to its design features.
- Toothed. consist of a propeller shaft and a gear train. Discontinued since early 2000s.
High-speed bikes are divided into several types depending on the operating conditions and riding style:
- Mountain ones are designed for off-road driving, but are often used for city roads. This type of bike attracts with its versatility: a large number of gears and high-quality shock absorption allow you to ride with comfort.
- Travelers are usually purchased by people who travel long distances. These bicycles have a more comfortable landing, there is a trunk and foot brakes, and there is no shock absorber.
- Road racers can only ride on level ground. They are capable of high speed, have a lightweight frame and thin wheels. They are most often used for racing.
- Hybrids are bike bikes that combine the attributes of both a mountain bike and a road bike. They develop less speed than road ones, not designed for extreme loads due to the lightweight frame.
The frame is just as important as the suspension or brakes. This is the main part, the frame, to which other parts are attached. The durability and comfort while driving depend on the strength of the frame. This part is made from the following materials:
- Aluminum is the most reliable and cheapest type of metal. Lightweight and corrosion resistant.
- Steel is a common alloy and is easy to repair. However, its low strength does not allow its use at increased loads. Most often, steel frames are used on road bikes or entry-level bikes.
- Titanium is a highly durable metal used in premium models.
- Carbon is a lightweight and expensive material. Bicycles made from carbon fiber can handle longitudinal loads easily, but break if something hits them in the side.
In addition to the frame material, you need to pay attention to its size:
- 135-155 cm. 14 “;
- 150-165 cm. 16 “;
- 165-175 cm. 18 “;
- 175-185 cm. 20 “;
- 185-195cm. 21.5 “.
If we are talking about a children’s bike, then the dimensions will be slightly different:
- 95-105 cm. 12 “;
- 105-115 cm. 16 “;
- 115. 125 cm. 20 “;
- 125. 156 cm. 24 “.
Frame size affects ride comfort and safety. It is on him that the parameters of other parts depend: the seatpost and the upper tube. For example, if a short person buys a bicycle with a 20 ”frame, then he simply cannot reach the ground with his feet.
Buyers rarely come across a choice of rim, but when buying it is worth finding out what material this part is made of. It depends on its quality whether the bicycle will turn eights and what loads the metal can withstand. The rim is made from the following materials:
- aluminum is a durable and versatile alloy;
- steel is practically not used for the production of rims; it is not recommended to choose it due to its low strength;
- carbon. can replace aluminum, but it costs more.
In addition to the material, the characteristics of the part are also influenced by the length, width, spoke parameters (number of spokes, offset of holes).
The hub is responsible for the rotation of the wheel. The better this part is made, the easier the bike accelerates, the more speed it maintains. The front hubs are of a simple design, in contrast to the rear hubs, which are of the following types:
- classic without brakes, with mount for cassette;
Most often, bushings are made of aluminum, but there are parts from carbon or steel. The material of manufacture has little effect on the technical characteristics.
The brakes are just as important as the wheels or frame. Safety often depends on how quickly the cyclist brakes. Most bikes are equipped with disc and rim brakes. The latter clamp the wheel on both sides, gradually slowing down their rotation. Rim brakes run cooler, are easy to adjust and are cheap. But due to their design, they wear out quickly, so they need to be changed every 200-300 km.
Disc brakes consist of a steel disc that grips the wheel. They are considered to be more effective than rims and need to be replaced less often. However, misconfiguration or intrusion of foreign parts can quickly damage the system. Budget models are most often equipped with rim brakes, and mountain and off-road options. disc brakes.
The suspension is needed to protect the cyclist from bumps and strong shaking. By design, the following types are distinguished:
- Rigid is a rigid suspension that does not soften pits and bumps. Fits on the cheapest road and city bikes. Due to the fact that there is no damping of vibrations, the parts have a large load.
- Hardtail and softtail. suspension fork systems that soften shocks and provide a more comfortable suspension. Fits on mountain, hybrid and road bikes.
- Full Suspension. Combines a suspension fork and a rear wheel suspension system. The main advantage is maximum comfort and good grip of the tires.
Number of gears
Today you can find bicycles that have from 1 to 33 speeds. The higher this value, the higher the price of the model. But it is not worth seeking the maximum value: quantity in this case does not mean quality. The optimal number is considered to be from 18 to 27. Affects the ride quality and the number of leading stars.
Tires differ in seasonality (summer and winter), diameter, material of manufacture (artificial or natural rubber), and tread. Most often, road and city bikes are equipped with semi-slick or studded rubber, which removes water from the contact patch and provides good grip even on rough terrain.
Optional accessories enhance ride comfort and safety. Some of them are included, while others need to be purchased separately:
- rear view mirrors;
- flask holder;
- lanterns illuminating the road;
- hand pumps;
expensive models are equipped with fenders, reflectors, bell and footrest. Cheap bicycles do not have all these amenities, so they must be purchased separately.
Best speed bike for boys
Mountain Novatrack Racer 20 is considered the best solution for boys from 7 to 10 years old. It is designed for off-road riding, equipped with aluminum rims and studded rubber. The steel frame with a diameter of 20 “is suitable for height from 115 to 135 centimeters. The bike is made from budget materials, so there is no shock absorption and the fork is rigid.
But all the shortcomings are compensated for by a low price: both the MTV itself and the parts are made of simple materials, so repairs can be done by hand. The Novatrack Racer has V-Brakes and gears ranging from 6 to 12. Buyers recommend buying single sprocket models as Novatrack is not designed for 2 front sprockets.
- Type: mountain.
- Number of speeds: 6-12.
- Rear Derailleur: Shimano.
- Brake type: V-Brake.
- Drive type: chain.
- Age: 6-10 years old.
- Height: up to 135 cm.
- Additional options: fenders, trunk.
- Convenient low frame.
- The cost.
- Quality brakes and derailleur.
- Lack of depreciation
- Steel frame.
- Total 6 gears.
The best speed bike for girls
For girls from 10 to 14 years old, the mountain Schwinn Ella 24 is the best choice. The first thing that catches your eye is its design. All details are made in pleasant mint shades with silver accents. The weight of the bike is quite impressive for a teenager. 13 kilograms, so he cannot lift it on his own. Cyclist safety is ensured by two walking rim brakes and a rigid fork.
- Type: mountain.
- Age: 9-15 years old.
- Height: from 125 to 156 cm.
- Frame size: 14 “.
- Wheel diameter: 24cm.
- Suspension: rigid.
- Weight: 13 kg.
- Number of gears: 7.
- Quick release wheels on eccentric axles.
- The cost.
- There is no footrest.
- Weak depreciation.
Best Adult Speed Bike
The road Merida Cyclo Cross 300 will appeal to those who have been riding for a long time and would like to take it to the next level. This model is distinguished by high quality Shimano components and is used for sports riding in the cyclocross discipline. Thanks to the lightweight aluminum frame, the bike weighs only 10 kg. Despite this, it is able to withstand a load of up to 100 kg.
The Merida Cyclo Cross is available in several sizes, with frame diameters of 18, 19, 20, 21, 22 and 23 inches. The bike has 20 speeds and a 2 star system. While riding, the owner feels comfortable enough. despite the fact that the road bike lacks shock absorption.
- Type: road.
- Age: adults.
- Frame: high, made of aluminum.
- Weight: 10.5kg.
- Color: yellow, blue.
- Rim material: aluminum alloy.
- Brake type: TRP Spyre disc.
- High quality attachments.
- Comfortable sports saddle.
- Develops high speed and confidently holds turns.
- Suitable for sports rides.
- Seatpost is too stiff for long trips.
Best mountain speed bike
Mountain bikes are the most convenient models at the moment, so there are many offers on the market for a wide variety of wallets. The Stinger Highlander 100V has the most optimal price-quality ratio. Made in green and blue colors, it is designed for active driving on rough terrain. However, it can also be used on city roads.
Unlike other models, the Stinger Highlander features two-suspension shock absorption with 50mm fork travel. The frame is made of a special alloy of extra strong steel, which ensures good roll. Shimano multi-speed system supports 18 speeds, making it easy to drive even on high slopes.
- Type: mountain.
- Crank length: 17cm.
- Age: adults.
- Frame size: 16, 18 “.
- Type of brakes: rim walking V-brake.
- Wheel diameter: 26 “.
- Rear Derailleur: Shimano.
- Double suspension shock absorption.
- Convenient switches.
- Hi-Ten steel frame.
- Z-Axis tires.
Best inexpensive speed bike
The inexpensive STELS Navigator 350 Gent 28 Z010 bike, despite its price, is made of quality materials and equipped with a 7-speed transmission with 1 star. Bottom brackets, shifters and rear derailleur are made by Shimano. The fork is stiff and there is no shock absorption, but the STELS Navigator is designed for city roads, not rough terrain.
The simple design makes the bike easy to assemble and repair. An additional plus is the presence in the configuration of the trunk, footrest and basket.
- Type: urban.
- Age: for adults.
- Frame size: 20 “.
- Wheel diameter: 28 inches.
- Frame material: steel.
- Brake type: rim walking.
- Number of speeds: 7.
- Crank length: 17cm.
- Weight: 18KG.
- The cost.
- Trunk and basket.
- Robust frame.
- Comfortable saddle.
- Flimsy pedals.
- Heavy weight.
Best Teenage Speed Bike
A good option for teenagers is the Forward Unit 20 3.0 mountain bike with 18 speeds. Boys and girls from 7 to 11 years old up to 135 cm tall can ride the bike. The unit 20 3.0 is distinguished from other models by the presence of Hard tail shock absorption and a soft fork. Also worth noting are disc brakes, which allow you to instantly stop the bike. The frame is made of Hi ten steel and the rims are made of aluminum alloy. The bike is suitable for riding in the city in a sporty style or for off-road travel.
- Type: mountain.
- Age: 6-11 years old.
- Height: up to 135 cm.
- Frame size: 10.5 “.
- Frame material: steel.
- Fork travel: 50mm.
- Brakes: disc.
- Wheel diameter: 20 “.
- Complete set: footrest, fenders, reflectors.
- Availability of depreciation.
- Disc brakes.
- Chain guard only on chainring.
- Weight 12 kg.
- Gear shifting with effort.
Choosing a bike is not easy: there are hundreds of models on the market that differ in price, material and components. High-speed bicycles are divided into mountain, road, teenage, road. When choosing, pay attention first of all to its functions. Don’t choose a mountain bike for cyclocross, and a road bike for off-road riding. The type of brakes, the size of the frame and the quality of the parts are also important.
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 what it is connected with is not easy to understand right away. What causes the pedals to spin, and how to fix it, will be discussed later in the article.
Why pedals are spinning idle
- increase in free wheeling;
- weak spinning of the wheel;
- chain slippage in motion.
If a malfunction is detected, there is a keen desire to check the pedals, more precisely, the drive connecting rod-pedal mechanism. Some of the scrolling is due to the carriage, but often the reasons lie elsewhere in the drivetrain:
- 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 long-term operation, the inner components of the bushing wear out, lose their 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 spin completely, and the wheel does not spin. a neglected case when the hub fails. But most often there is an increase in free travel, the bike starts to move harder, and 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 stretched state, the chain hooks on the teeth of the stars worse, sliding over them. Total link length ranges:
- 304.8. 306.4 mm. normal chain;
- 306.4. 308 mm. Average chain wear. May affect the transmission of torque, single pedal clicks are possible.
- 308 mm and more. the chain is worn out, causes wear on the stars, slips and flies.
Worn chain sprockets, coupled with a worn chain, can also increase pedal cranking and bouncing. Although the problem may arise due to accumulated dirt.
Solving the problem on a regular bike
The first, and in some cases the surest, 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, you should consider replacing it. 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 bushing bearings, axle and taper rollers for wear.
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 one stays in place or lags behind, increasing wear.
The sleeve can be returned 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 teeth and washers 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, 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 bushing. The condition and position of the bearings, wear of the cone and roller tappets are carefully checked. If you suspect a bushing, 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 eliminate the malfunction.
Pedals on a bike are scrolling: causes and solutions
If the pedals on the bike are spinning, this can happen for a variety of reasons. Most often, improper care of a two-wheeled vehicle leads to this. Trouble can be caused by prolonged failure to service the main functional systems of the bike. The wear of certain parts often leads to disastrous consequences. Let’s find out how to fix the problem of idle scrolling of the pedals on a bicycle, what factors contribute to the occurrence of such a breakdown.
The pedals are spinning on the bike: the reason
- the chain on the bike is very stretched;
- front sprockets are worn out;
- the elements of the rear cassette have become unusable.
There is also a combination of the above breakdowns.
Assessment of the general condition of the bike
If the pedals on the bike are scrolling, before proceeding to disassemble its components and think about repairing, it is worth assessing the general condition of the bike. First of all, you need to check how correctly the rear and front derailleurs are set, which are responsible for changing the speeds. A failure in the settings will be indicated by an uncharacteristic annoying crackle while driving, as well as a fairly regular hit of the chain between the sprockets when pedaling.
Sometimes the problem affects bikes that do not have a gearshift system installed. In cases where the pedals on a bicycle of a similar plan are scrolled, first of all, you should pay attention to the condition of the chain. It may just take a thorough cleaning and lubrication to fix the trouble.
Damage to sprocket cranks
As for the reasons why the cranks of the sprockets are damaged, this is most often caused by the implementation of excessive pedal pressure during driving. Notches on them can “lick off” naturally as a result of friction. The end of the life of the sprockets will definitely cause problems with cranking the pedals.
In some cases, the trouble can be eliminated by flushing the sprockets from the accumulation of old oil, debris and adhering dirt. To remove the specified impurities, it is enough to carefully wipe the parts with a piece of material moistened with kerosene.
If the problem is serious and the sprockets are missing several teeth, you need to dismantle the functional unit, disassemble it and, if possible, replace the damaged elements with intact ones. Naturally, the most reasonable solution in this situation is to install a new set of stars. However, this option requires significant cash costs.
The problem may be due to overstretching the chain. In this case, it begins to sag unnecessarily, which leads to a weak grip of the sprockets and, as a result, pedaling. How to tension the chain? To do this, you will have to shorten it. So, on one of the links there is a special latch that opens the ring connection of the chain. Having removed the part, it is enough to remove one or more links, knocking out the bushings from them with a hammer and a metal breakdown. In conclusion, it will be enough to connect the circuit back to the same latch.
If the above steps did not fix the problem, you will have to replace the chain with a new one.
How to fix the trouble? The root cause here may be the stretching of the cables, the presence of dirt on the gaskets. The solution is to remove them from the jackets and flush the connections from rust using a special WD40 tool. In the event of a break or critical damage to the sections of the cables, you will have to replace them with new ones.
Should I lubricate the cables with oil? Experts do not recommend resorting to such actions. It may be easier to change gears at first. However, over time, grease-coated cables will stick to dirt, making them difficult to move.
It is necessary to lay the cables in shirts so that the angle of their bending remains minimal. This will avoid excessive friction.
After servicing or replacing the cables, it remains to re-adjust the gear switches. Finally, you will need to ride the bike, checking if the pedals are cranking as before.
So we examined the main malfunctions that can lead to idle pedaling on a bicycle. We hope the information presented in the article will help you eliminate the trouble and bring your favorite bike back to life.