chain tension

[poscarguy]

today i had adjusted my chain tension. like i do every 500 to 600 miles. and i set it on the tighter side of the "proper" specs for tension. i dont have a problem but i was curious what would be the outcome of an overtightened chain?

[JayBell]

stretched chain, possible chain failure, worn sprockets, excessively worn output shaft bearing...

[katman05]

Give it an 1" to an 1"1/2 slack.