I gone cranking
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Re: I gone cranking
Maybe.. though motors on the traction like 319s and 313s for example are DC motors. I must admit, I haven't noticed a sound different on a 319 before, but there's definetly no change on a 313.
So on DC mode, power goes straight through to the traction equipment. On AC however, it's stepped down and rectified from the AC into a DC current
Some units with AC motors are even stranger. The AC current will be rectified into DC, then inverted to AC again for the motors.
I'm quite eager to find out as it has baffled me. Might just be a one off with a couple of units of course.
Mission for the near future... find a 700 traction manual!
So on DC mode, power goes straight through to the traction equipment. On AC however, it's stepped down and rectified from the AC into a DC current
Some units with AC motors are even stranger. The AC current will be rectified into DC, then inverted to AC again for the motors.
I'm quite eager to find out as it has baffled me. Might just be a one off with a couple of units of course.
Mission for the near future... find a 700 traction manual!
Re: I gone cranking
Sounds like a trumpet symphony until the end when someone loses their concentration...
Very much a retired regular poster..... If you can say that
Re: I gone cranking
That noise would get on my nerves, much like the noise of the 323s or 350s does. I just hope these new Civity's that we're getting here don't make silly noises.
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Re: I gone cranking
I quite like it because it gives an inanimate metal tube a bit of character... Commuting on 444s and 450s for a year burned the sound of pulling away into my brain and if I hear it now it brings back memories of the time.Pilot wrote:That noise would get on my nerves, much like the noise of the 323s or 350s does. I just hope these new Civity's that we're getting here don't make silly noises.
Re: I gone cranking
That's different... I'll give it that.
It does bug me that the motor goes out of tune on the last note.
It does bug me that the motor goes out of tune on the last note.
Re: I gone cranking
So I saw a 387 do a Sutton Loop service for the first time today, followed by a 377 doing the next Sutton Loop! This breaks the unspoken law of Thameslink: Sutton Loop services always get the crap trains.
There must be enough 700s in service already for this to happen...
Yet I haven't been on a 700 in weeks on my daily commute! Seen a few go the other way though.
There must be enough 700s in service already for this to happen...
Yet I haven't been on a 700 in weeks on my daily commute! Seen a few go the other way though.
Any opinions expressed are purely mine and not that of any employer, past or present.
Re: I gone cranking
There appears to be 4 Class 700 diagrams that operate through the core down the week (has been this way for the last few days at least).JamieLei wrote:So I saw a 387 do a Sutton Loop service for the first time today, followed by a 377 doing the next Sutton Loop! This breaks the unspoken law of Thameslink: Sutton Loop services always get the crap trains.
There must be enough 700s in service already for this to happen...
Yet I haven't been on a 700 in weeks on my daily commute! Seen a few go the other way though.
With regards to Sutton, the Class 387s and Class 377s appear to come out in the morning and evening peaks for that line (this is looking as far back as I can be bothered to look, August 5th), though it looks like it may be a little bit different today.
Re: I gone cranking
Are you looking at this through TRUST?Pilot wrote:With regards to Sutton, the Class 387s and Class 377s appear to come out in the morning and evening peaks for that line (this is looking as far back as I can be bothered to look, August 5th), though it looks like it may be a little bit different today.
That's one railway system I never learnt...!
Any opinions expressed are purely mine and not that of any employer, past or present.
Re: I gone cranking
One system I never wanted to learnJamieLei wrote:Are you looking at this through TRUST?
That's one railway system I never learnt...!
Re: I gone cranking
It is indeed TRUST, and it is a relatively simple system to use to be fair to it, just looks awful!Geo Ghost wrote:One system I never wanted to learnJamieLei wrote:Are you looking at this through TRUST?
That's one railway system I never learnt...!
Re: I gone cranking
I got to grips with most of it. But I still just hated using it
Re: I gone cranking
It looks like it hasn't changed since 1993. Which it probably hasn't.
Any opinions expressed are purely mine and not that of any employer, past or present.
Re: I gone cranking
I discovered the other day that one of my more distant family members was involved in setting up TOPS. He told me they had an issue where lots of wagons would go missing for ages and then suddenly would appear elsewhere with no reports in between.
It turned out that when wagons were first given number they were painted on the side while they were stopped in a yard and someone walked down the yard from one end to the other numbering them effectively 1 - 10 and then, instead of doing 10 - 1 when coming back down the otherside they were given another set of numbers on the other side. As TOPS was initially a visual reporting system, if nobody saw the other side then effectively they would go missing. Bit of a balls up.
It turned out that when wagons were first given number they were painted on the side while they were stopped in a yard and someone walked down the yard from one end to the other numbering them effectively 1 - 10 and then, instead of doing 10 - 1 when coming back down the otherside they were given another set of numbers on the other side. As TOPS was initially a visual reporting system, if nobody saw the other side then effectively they would go missing. Bit of a balls up.
Re: I gone cranking
TRUST is engrained in my working life. The railway would be totally screwed without. It's connected to everything.
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Re: I gone cranking
Ameecher wrote:https://www.youtube.com/watch?v=-SDYdHzT7Qw
Really ? What kind of "music" is in that train ? Certainly not rheostats ?
YNM = yoursNotMine - Don't get it ?
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Re: RE: Re: I gone cranking
It's those new AC motors we use nowerdays. In the UK we have similar sounding (albeit less tuneful) class 465s. I don't quite understand it, but it is the motors themselves.YNM wrote:Ameecher wrote:https://www.youtube.com/watch?v=-SDYdHzT7Qw
Really ? What kind of "music" is in that train ? Certainly not rheostats ?
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