Recent content by Equinox

Yeah I hear it :) it's just after the 5:55 you mentioned, but it's definitely there! I can't see any obvious cause for this noise in this video though? No expansion gaps etc?

As someone who also used to answer 999 calls I can honestly say I dealt with at least 3 fatalities over the 6 years I worked there, all related to children on the line who possibly had this misconception. One of which was burnt so badly they had actually turned black. (Apologies for the graphic...

Wow great explanation. Thanks very much for that! That's interesting to know as I've always wondered :) I do notice that the faster a train approaches the closer together and more 'bouncy' the sound is. I am a roller coaster engineer (or was) at Alton towers and love learning how things...

There must be a railway engineer or two who use this forum to clarify either way?... Otherwise I might just send them an email and ask. It'll annoy me not knowing for sure!

I found a video woo! Can he heard here at 0:50. And also at 01:13, where you can see it actually happens when the train moves onto a new section of track. http://m.youtube.com/watch?v=0mON7-xQKQI Also here at 2:50 http://m.youtube.com/watch?v=i_DtBBdsC40 That double lazer-gun noise. I guess...

I've had a listen to a few... That seems to be a constant resonance which slowly gets louder... The noise I hear sounds very different. It it a lot sharper and starts instantly with a few stabbing noises like a lazer gun firing... It's hard to describe a sound! I'm sure people know what I mean...

I guess it could be the shoe hitting the conductor, and the wheels striking the next section of track? Any length of metal will resonate when struck so could be a mixture of both?

I just had a read about expansion joints and think I understand now. Expansion joints seem to be spaced sometimes miles apart which would explain why it starts when the train is a long way off. When the first wheel hits the start of the piece of track you are standing by this would obviously...

That would certainly make sense :) ... Then it does lead to the question... Why that particular piece of track? As there is numerous sections in-between where the train is, and where the station is when the noise starts? As mention above it can be a long way off when the noise starts. If all...

Just seems strange that it starts immediately with a loud 'Ping' and then seems to bounce up and down getting quieter. You would think resonance from the wheels would slowly get louder and louder as the train approaches?

I guess seeing as I only ever use southwest trains, all my experience of it comes from stations which have a third rail (hence my obviously wrong assumption!)

Hi guys Just been having a discussion with someone about 'that' noise the rail track makes shortly before a speeding train passes. The noise I am talking about is a high pitch 'pinging ' sound which seems to resonate/bounce quickly along a section of track before a train speeds past. I always...