How do chain tensioners work on bmx bikes?

Answer 1

1) undo wheel nuts 2) hook chain tensioner onto wheel axle and over open end of drop-out 3) tighten chain tensioner until chain tension is OK, spin crank and check for tight spots 4) put wheel nut back and tighten them 5) spin crank and check for tight spots

Answer 2

Chain tensioners consists of a washer connected to a yoke by a threaded rod. The washer goes over the wheel axle, the yoke fits over the end of the dropout and the threaded rod allows you to pull the wheel axle towards the end of the dropout and tension the chain.

Answer 3

Depends on what kind of tensioner you're talking about.

Chain tensioners for BMX/single-speed bikes consists of a washer connected to a yoke by a threaded rod. The washer goes over the wheel axle, the yoke fits over the end of the dropout and the threaded rod allows you to pull the wheel axle towards the end of the dropout and tension the chain.

Chain tensioners used for turning bikes with external gears into Single-Speed/internally geared bikes basically look like a rear derailer with only one pulley. They work by taking the slack out of the chain when chain tension can't be set by moving the wheel back & forth.