Re: Melbourne or General rail FAQ's

["Wizzer" <wizzer1865@optusnet.com.au>]

That burst of air you can hear is actually the automatic drain valve just
below the main reservoir which is set to activate at approx 35kpa (+- 5
kpa), this is basically just to keep the main reservoir clear of dirt, grit
etc
Fleetwood Mac Attack <hulkster@nospam.bigpond.net.au> wrote in message
et2uess44ncbkfodvhmj67hfbq3naj59g6@4ax.com">news:et2uess44ncbkfodvhmj67hfbq3naj59g6@4ax.com...
> I catch the train to work everyday, and I've gotten curious about what
> is going on as I make my journey...
>
> Really basic stuff......like what's that "badoom badoom" noise as the
> train speeds along the track, how do "through-lines" work and most
> importantly (sort of) what is that burst of air that the train lets
> out as it's about to leave the station....
>
> Can any of you point me towards a very basic train FAQ that can quench
> my curiousity?
>
> Thanks!
>
>