A planetary gear train which sits between the engine and driven wheels to allow them (driven wheels) to spin at different relative speeds with each other to account for varying paths taken (varying surface, turning etc.)
There is no tag wiki for this tag … yet!
Tag wikis help introduce newcomers to the tag. They contain an overview of the topic defined by the tag, along with guidelines on its usage.
All registered users may propose new tag wikis.
(Note that if you have less than 4000 reputation, your tag wiki will be peer reviewed before it is published.)