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2. X-ring chain - Wikipedia

   en.wikipedia.org/wiki/X-ring_chain

   Like the O-ring chain it has sealing rings which keep the contaminant (dirt) out, and lubricant in between the pins and bushings. This is known as internal lubrication. However, unlike O-ring chain, it has X-shaped seal which does not experience increased surface area (which is in contact with the chain plates) when under pressure.

3. Dry lubricant - Wikipedia

   en.wikipedia.org/wiki/Dry_lubricant

   Dry lubricants or solid lubricants are materials that, despite being in the solid phase, are able to reduce friction between two surfaces sliding against each other without the need for a liquid oil medium. [1] The two main dry lubricants are graphite and molybdenum disulfide. They offer lubrication at temperatures higher than liquid and oil ...

4. Self-lubricating chain - Wikipedia

   en.wikipedia.org/wiki/Self-lubricating_chain

   After they made further improvements to the oil impregnation and sintering technologies, they received a patent for their lube-free roller chain, as evidenced by Patent #JP20070237969. [5] In the new design, advancements in powder metal bush technology allowed engineers to design a bush that had a smaller diameter yet was stronger, which ...

5. Motor oil - Wikipedia

   en.wikipedia.org/wiki/Motor_oil

   Breakdown of VIIs under shear is a concern in motorcycle applications, where the transmission may share lubricating oil with the motor. For this reason, motorcycle-specific oil is sometimes recommended. [18] The necessity of higher-priced motorcycle-specific oil has also been challenged by at least one consumer organization. [19]

6. Lubricant - Wikipedia

   en.wikipedia.org/wiki/Lubricant

   A lubricant (sometimes shortened to lube) is a substance that helps to reduce friction between surfaces in mutual contact, which ultimately reduces the heat generated when the surfaces move. It may also have the function of transmitting forces, transporting foreign particles, or heating or cooling the surfaces.

7. Should You Switch to a Shorter Crank Length? - AOL

   www.aol.com/lifestyle/switch-shorter-crank...

   Deputy Editor Tara Seplavy and Test Editor Dan Chabanov talk about crank length, available options, and whether you should change to a shorter length.