Originally Posted by
mathletics
I busted a chain from having it too tight. I won't take any guesses about the cause of your chain failure, because all of my other guesses about stuff today have been wrong.
Keep it properly tensioned, properly lubed, and ride with a brake.
good point, if your front chainring was bent even a little, and your chain was very tight, then the stress put on your chain by the chainring turning would be extremely great (in the pejorative sense of the word)