Difference between revisions of "Chain Drive"
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Sealed chains use o-rings to seal in a lubricant, great for daily driving. Also used in racing applications. Very common in motorcycle shops. | Sealed chains use o-rings to seal in a lubricant, great for daily driving. Also used in racing applications. Very common in motorcycle shops. | ||
==Non-Sealed== | ==Non-Sealed== | ||
| − | Non-sealed requires more frequent lubrication application and are commonly used for motocross or low mileage applications. Sprockets are | + | Non-sealed requires more frequent lubrication application and are commonly used for motocross or low mileage applications. |
| + | =Sprockets= | ||
| + | Sprockets are made of<span></span>[[Steel|steel]]<span>,</span><span></span>[[Aluminum|aluminum]]<span>, or [[Titanium|titanium]]</span>and can replaced to change the<span></span>[[Drivetrain#Final_Drive_Ratio|final drive ratio]]. Sprockets can be bought or easily made by laser-cutting, water-jetting, or traditional machining. | ||
| + | |||
| + | As the number of teeth decrease, the sprocket will approach a polygon instead of a circle. This is called the polygon effect or chordal action and results in a variation in speed output (Imagine driving on square wheels).[http://chain-guide.com/basics/2-2-1-chordal-action.html] | ||
=Failure Modes= | =Failure Modes= | ||
If there is excessive sprocket wear, improperly installed quick release, no lubricant, or if the chain drive is not all in the same plane there WILL be a failure. Chain failures can be extremely dangerous for both the vehicle and nearby people. (more on failure modes/design flaws?)<br /><br />+No slip possible in chain drive without failure [https://www.myodesie.com/wiki/index/returnEntry/id/3058#Chain%20Drive%20Advantages] | If there is excessive sprocket wear, improperly installed quick release, no lubricant, or if the chain drive is not all in the same plane there WILL be a failure. Chain failures can be extremely dangerous for both the vehicle and nearby people. (more on failure modes/design flaws?)<br /><br />+No slip possible in chain drive without failure [https://www.myodesie.com/wiki/index/returnEntry/id/3058#Chain%20Drive%20Advantages] | ||
Revision as of 20:47, 19 May 2020
A chain and sprocket drive system requires lubrication and a tensioner.
Chain Types
explain motorcycle chain sizes, ratings.
Chains can be easily lengthened or shortened using quick release links.
Sealed
Sealed chains use o-rings to seal in a lubricant, great for daily driving. Also used in racing applications. Very common in motorcycle shops.
Non-Sealed
Non-sealed requires more frequent lubrication application and are commonly used for motocross or low mileage applications.
Sprockets
Sprockets are made ofsteel,aluminum, or titaniumand can replaced to change thefinal drive ratio. Sprockets can be bought or easily made by laser-cutting, water-jetting, or traditional machining.
As the number of teeth decrease, the sprocket will approach a polygon instead of a circle. This is called the polygon effect or chordal action and results in a variation in speed output (Imagine driving on square wheels).[1]
Failure Modes
If there is excessive sprocket wear, improperly installed quick release, no lubricant, or if the chain drive is not all in the same plane there WILL be a failure. Chain failures can be extremely dangerous for both the vehicle and nearby people. (more on failure modes/design flaws?)
+No slip possible in chain drive without failure [2]
Drivetrain Shield
Chain drives have specific shielding rules in FSAE covered in T.5.2.7 (link to rules) (what about FS?).
