Are single speed bikes are good?
Choosing a bike crankset: The advantages of the 11-speed compact!
Given the multitude of possibilities offered in the transmission, make the right choice is not necessarily obvious. The latest developments in compact cranks make life easier for cyclists. Here are some thoughts to support you!
A few years ago, cyclists practicing the road bike saw the transmission triple plateaux, directly inspired by mountain biking. The triple plateau was the solution for any cyclist who wanted to climb the same passes as his idols of the Tour de France . |
For some time, we observe the opposite phenomenon. More and more cyclists are returning to double trays, thanks to
single speed bikes,compact cranks and 11-speed transmissions , which open up new possibilities in terms of staging and capacity.
An evolution of possibilities
At the time, composing a good pinion cassette by pinion was a tedious exercise. Especially for cyclists in the lowlands who during sessions in the mountains were found with reports impossible to bring. It was then necessary to modify the cassette to add a pinion of 26 or 28 teeth, which accentuated inevitably the difference between the pinions.
The chain then had all the trouble in the world to stay in its place, and jumped inevitably when shifting. Result of the races: a beautiful galley! It is in this that the pedal "triple" came to rebate the cards. With a combination of 50, 39 and 30 tooth trays, no more neck was too high or steep.
With the introduction of 9,10 and 11 speed groups and compact cranks respectively , cyclists have been offered an ever wider range of gear ratios .
Another advantage, the compact lightens the pedal, simplifies / facilitates the transmission (less trays), optimizes the chain line by reducing crossovers and covers almost all developments used with a triple crankset.
A gear adapted to ... several constraints
When you live in the plain, a standard crankset 53-39 teeth is well suited. On the other hand, for the cyclists who evolve in hilly or mountainous area, the 39 teeth will immediately appear much more difficult to take uphill.
One of the solutions is to change the cassette, the latest generation of derailleur available on the market, long clevis, tolerate cassettes up to 32 teeth.
Cyclists who are more familiar with this subject will tell you that this is not the best solution and that setting up your road bike for the mountain sacrifices the pace of pedaling. Thus too large gaps appear between the middle gears and the last pinion. The goal is to extend the transmission capacity for high percentages without giving up a high pedaling rate.
The transmission speeds 11 recently introduced in the market offered an excellent response to high ratio cassettes by developing 11-speed, manufacturers simply have not proposed an additional report, but also a better staged transmission:
the last 3 gears, whose combination of teeth is essential to face the passes,
and the other 8 gables, which must be suitably staged to ride in plain or on brittle paths.
This is where the benefit of 11 speeds is for the practitioner!
In this sense, the new 11-speed transmissions in a compact version (52x36, 50x34 or 50x36), offer a first real alternative to the traditional triple transmission , which until now was the only solution for mountain climbing, when not professional runner.
Whether it's a 10-speed triple bike crank, or a 11-speed compact, the rider has plenty of capacity to ride high percentages , but with the 11-speed compact, you get a better staged cassette, and you can briskly cross the chain compared to the triple which tolerates little crossings.
single speed bikes,compact cranks and 11-speed transmissions , which open up new possibilities in terms of staging and capacity.
An evolution of possibilities
At the time, composing a good pinion cassette by pinion was a tedious exercise. Especially for cyclists in the lowlands who during sessions in the mountains were found with reports impossible to bring. It was then necessary to modify the cassette to add a pinion of 26 or 28 teeth, which accentuated inevitably the difference between the pinions.
The chain then had all the trouble in the world to stay in its place, and jumped inevitably when shifting. Result of the races: a beautiful galley! It is in this that the pedal "triple" came to rebate the cards. With a combination of 50, 39 and 30 tooth trays, no more neck was too high or steep.
With the introduction of 9,10 and 11 speed groups and compact cranks respectively , cyclists have been offered an ever wider range of gear ratios .
Another advantage, the compact lightens the pedal, simplifies / facilitates the transmission (less trays), optimizes the chain line by reducing crossovers and covers almost all developments used with a triple crankset.
A gear adapted to ... several constraints
When you live in the plain, a standard crankset 53-39 teeth is well suited. On the other hand, for the cyclists who evolve in hilly or mountainous area, the 39 teeth will immediately appear much more difficult to take uphill.
One of the solutions is to change the cassette, the latest generation of derailleur available on the market, long clevis, tolerate cassettes up to 32 teeth.
Cyclists who are more familiar with this subject will tell you that this is not the best solution and that setting up your road bike for the mountain sacrifices the pace of pedaling. Thus too large gaps appear between the middle gears and the last pinion. The goal is to extend the transmission capacity for high percentages without giving up a high pedaling rate.
The transmission speeds 11 recently introduced in the market offered an excellent response to high ratio cassettes by developing 11-speed, manufacturers simply have not proposed an additional report, but also a better staged transmission:
the last 3 gears, whose combination of teeth is essential to face the passes,
and the other 8 gables, which must be suitably staged to ride in plain or on brittle paths.
This is where the benefit of 11 speeds is for the practitioner!
In this sense, the new 11-speed transmissions in a compact version (52x36, 50x34 or 50x36), offer a first real alternative to the traditional triple transmission , which until now was the only solution for mountain climbing, when not professional runner.
Whether it's a 10-speed triple bike crank, or a 11-speed compact, the rider has plenty of capacity to ride high percentages , but with the 11-speed compact, you get a better staged cassette, and you can briskly cross the chain compared to the triple which tolerates little crossings.
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According to British researchers, dogs prefer to watch television when the program delivers particular images and sounds ...
VIEWERS. Posted in front of a television screen , the cat is on the lookout for the slightest change of images, which he celebrates by putting his paws on the screen. But what about dogs? Two British researchers of the Animal Computer Interaction Design (a research unit specializing in the design of technologies for media suitable for dogs) of the 'University of Central Lancashire wanted to know. They followed the eyes of these animals when they scrutinize a television screen: this allowed them to see that dogs have a real interest in the small screen. They would even be particularly fond of videos showing ... their peers.The same authors had published a study in 2011 stating that dogs have preferences for certain sounds from TV. According to this research, their interest is in barking, yapping, the voice of a person who "kindly" gives an order, or who compliments an animal and the sounds of a squeaky toy.
3 seconds of concentration on a TV screen
Riding on these studies, a television channel for our four-legged friends has even emerged. DogTV is the first channel whose programs have been " scientifically developed and adapted to the sight and hearing of dogs ", the latter seeing only brown, blue and yellow .
However, as recalled by the website The Conversation in an article published on September 8, 2016 , these canines have very brief interactions (about 3 seconds) with screens. As a result, even if they are sometimes really captivated by an image, most of the time these animals have their gaze in a vacuum when it is on the screen. The ideal for them, would be a sequence of images or short video sequences. However, the fact that they prefer to view dogs and hear some noises reveals that television can (to a certain extent) hypnotize our four-legged companions.