Bicycle chain function and loads it bearsīicycle chain’s function is to transfer pedaling force from the front chainring to the rear sprocket. For details about dimensions see posts: Bicycle chains compatibility Bicycle cassette compatibility 2. Sprockets for less speeds and front chainrings are wider, and so is the width of the contact point. Width of chain’s contact point with a sprocket is at least 1.6 mm (for sprockets for 11 speeds at the rear). A One chain link B Outer plate C Pin D Inner plate E Roller Note the lack of bushings as the main difference. For details, look at this post: When to replace the chain on a bicycle. Picture 2 shows parts of a modern bicycle chain. In practice, this means they “absorb”, but also “loose” lubricant more quickly, and thus wear a lot faster. Modern chains however don’t have bushings – they are bushingless chains. Parts that consist a chain link of a bushing chain Bushing chain parts are shown in picture 1. Bushings helped reduce wear by both serving as a friction reduction themselves and by trapping and keeping chain lubricant between a bushing and a pin, as a “sleeve”. Odler version of chains had bushings over pins – between pins and rollers. Over the pins there are rollers – used to make sliding over chainring teeth easier. Construction of a bicycle chainĬhain consists of plates that are connected with pins. And, like all the other articles, it gets updated as new knowledge is acquired. Still – it is no more, and no less than: “what I have learned (through theory and practice) so far”. People’s reactions to this article (along with the article on bicycle bearing greases) seem to range from taking it as a gospel, to taking it as blasphemy. All of this is normal and to be expected. Even more often – there is and will be data (experiments, statistics, publications etc.) that might contradict, or seem to contradict my work when read/interpreted by a non expert. I’m sure there are, and will be, people who completely, or partially disagree. Different people, including experts, have different experiences and, often, different opinions. I have consulted experts of various fields (and still do), including mechanical engineers, especially when writing on this, rather “can-of-worms” topic, and info provided on my websites does agree with my practical experience, but it still is my opinion – based on my knowledge, education and experience. WD-40Īll the information provided in this article, as well as on all of my websites, is to be taken as: “to the best of my knowledge”, or “as far as I know”. Characteristics of various types of commercially available wet lubricants (i.e. How to change a particular lubricant’s viscosity (home brew) 8.2. Wet lubricant viscosity and it’s effect on characteristics …8.1.1. Dry lubricants that are still a little wet Other dry lubricants as additives (MoS2, graphite etc.) 7.5. Dry lubricants for bicycle chains 7.1.Comparative review of ISO VG and SAE viscosity grades SAE viscosity classification of gear oils 6.3. SAE viscosity classification of motor oils 6.2. Good rust protection and resistance to water wash off 5.2. Characteristics that a chain lubricant should poses 5.1.Bicycle chain function and loads it bears.Ĭomparative review of various lubricants is in this post: Comarative overview of bicycle chain lubricants. After years of experience and experimentation, dozens and dozens of chains worn and replaced, I have come to some conclusions on the subject, which I will share in this blog.įor instructions on how to clean and lubricate a chain, as well as lubricant recommendations, read this post: How to lubricate a bicycle chain. Ranging from those who remove chain, clean it in an ultrasonic jewellery cleaner, to those that just wipe and drop some oil on a chain from time to time. When it comes to those who do maintain their bicycle chains, there are many variations. There are also those that regularly clean and lubricate their chains. Eternal debate in the cycling world: how to lube and maintain a bicycle chain? There are those that seldom notice drive chain, until it starts creaking really loud, or breaks.
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