Saddle in various other Indo-European languages, including the Latin "sella". In addition to the above basic components, some saddles also include: There is evidence, though disputed, that humans first began riding the horse not long after domestication, possibly as early as 4000 BC. The earliest known saddle-like equipment were fringed cloths or pads used by Assyrian cavalry around 700 BC. These were held on with a girth or surcingle that included breast straps and cruppers. From the earliest depictions, saddles became status symbols. To show off an individual's wealth and status, embellishments were added to saddles, including elaborate sewing and leather
Timing belt (camshaft) overhead cam four-cylinder design which used a timing belt, a configuration which became one of the most common. A timing chain, also called a sync chain, is used on tandem bicycles, to synchronize crank movement between the captain (front rider) and stoker (rear rider). As with auto engines, proper tension of the timing chain is necessary to prevent premature wear of the drivetrain components. Tension is adjusted by means of an eccentric bottom bracket. Timing belt (camshaft) A timing belt, timing chain or cambelt is a part of an internal combustion engine that synchronizes the rotation of the crankshaft and