well I would like to have the option of throwing the derailleurs and being able to shift again, i'm trying out the singlespeed thing cuz i wanna have a simple set up with less stuff to worry about, I just don't want to damage the cassette if i decide to go back to 10 speed.
and another question, how much tension should there be on the chain? mine isnt too tight or too lose, but i think the vibrations are when i lean in on a turn and the chain scrapes the next cog cuz of gravity, i wanna tighten the chain a bit but i don't know how tight is too tight.