Class 319 sounds like EPB?

[SouthEastern-465]

When i was at London Bridge a Class 319 was leaving the station and as it was pulling away i notced it Sounded like and class 415 EPB?

Is it just me or has anyone else on the forum noticed this to?

 

[Bastiaan]

Yes, sometimes 319s want to pretend being an EPB by making the sound of it :roll:

 

[SouthEastern-465]

Yes, sometimes 419s want to pretend being an EPB by making the sound of it :roll:

????????

 

[generalvegitable]

Yes, sometimes 419s want to pretend being an EPB by making the sound of it :roll:

this is a 419:
http://en.wikipedia.org/wiki/British_Rail_Class_419

I think you are thinking of this, the 319
http://en.wikipedia.org/wiki/British_Rail_Class_319

 

[Bastiaan]

Yes okay, I said 419 while I meant 319 ... But still that doesn't change anything to the question. I mean, you're comparing a 1950s built unit to a 1987-'90 built unit. Are you trying to say that they - maybe - use the same type of engine, because they make the same noise?

 

[generalvegitable]

I also noticed that most older electrics make a simalar noise, the same is true of older LUL trains aswell, the 321, and others

 

[Bastiaan]

All electric motors sound similar. Only if you add things like choppers and thyristors, like newer units have, you get lots of different kinds of noises.

 

[generalvegitable]

thats also why my little model bachmann class 25 sounds the same as a full size EMU

 

[Dennis]

possibly thinking of the noise the compressor makes

 

[O L Leigh]

They are all going to sound broadly similar because the 1980's build EMU's (Cl313-322) work on the same principles as their 1950's and 60's predecessors. It's only the newer generations of units with 3-phase AC motors that sound different because of their complex control electronics. It's not exactly rocket science.

O L Leigh

 

[DJ_K666]

They do sound very similar, it`s true, except the 319 has the warning horn noise when they pull off from a stand which stops when they reach a certain speed (Possibly 15mph)

If you want a train that really sounds like an EPB, try the 455s, which have traction motors from the old 4 REP units. It was such a nice sound to hear amongst all those horrible electrostars though.

 

[O L Leigh]

Warning horn noise...?

The Cl455 motors came from 4SUB units. The motors from the 4REP's ended up in the Cl442 units that were their direct replacements.

O L Leigh

 

[hairyhandedfool]

I had to think for a minute, but it isn't a warning horn, its like a hum of electric in the motor or something like that, it is continuous when power is applied, but you notice it less at higher speeds because of the other sounds that are around. Particularly noticeable in the PMS (the coach with the traction motors and Pantograph) I think, from memory.

I wonder how much of the 313-322 units are the same? I'm pretty sure I remember 317/1s being AC motors compared to the 319s DC motors.

 

[SouthEastern-465]

Im not trying to be a know-it all,but bastiaan,a class 419 is a motor-luggage van,and use to be joined to most EMU boat trains etc..

 

[90019]

Im not trying to be a know-it all,but bastiaan,a class 419 is a motor-luggage van,and use to be joined to most EMU boat trains etc..

Which has already been pointed out a few posts ago.

 

[SouthEastern-465]

You are refering to the wikipedia link post,but it didnt say on the post itself it was a motor luggage van?

If it did please can you point it out?

 

[90019]

It gave a link, which shows what it is if you click on it, in the first sentence actually.
It also says that they were used on the boat trains.

 

[SouthEastern-465]

where?

 

[90019]

http://en.wikipedia.org/wiki/British_Rail_Class_419

The British Rail Class 419 Motor Luggage Vans (or MLV) were built from 1951-61 by BR at Eastleigh Works.

Ten of these units were built for the boat trains from London Victoria to Dover and Folkestone. Units were originally numbered in the range 68001-68010, but were classified class 419 under the TOPS system and were then renumbered 419001-419010, the numbers actually carried on the units in service reduced to 9001-9010, omitting the first two digits.

These unit are also fitted with batteries to allow them to operate over the short-distance of non-electrified line at the quayside. The batteries allowed the units to be used at low-speed for 20-30 minutes, and recharged whilst the unit was taking power from 750V DC third-rail.

Units were withdrawn from traffic in 1991/92, with the closure of Dover Western Docks railway station, resulting in the end of the boat train services.

 

[SouthEastern-465]

I meant on the site not links,but i guess it still counts!

 

[anthony263]

I noticed the clas 319 did seem to make a similar noise to the class 313's yesterday when i decided to have a little bash from Kings cross to City Thameslink on a class 319. I do agrea that the steep section at farrington is certainly steep, i didnt expect ity to be as steep as what it was.

 

[dan_atki]

Tidied - please stop posting waffly conversations that add nothing to the thread.

 

[Edvid]

I'm pretty sure I remember 317/1s being AC motors compared to the 319s DC motors.

317/1s are DC-motored just like the rest of the AC-powered/DC-motored 313-322 group*. The first AC-powered/AC-motored units (certainly since that era anyway) were the 323s.

(* And yes, I know the 313s/319s are also DC-powered)

 

[Dave R]

i always wondered why a 321 sounded like a southern EMU, does that mean that the AC electricity is converted to DC electricity?

 

[Edvid]

That's right. As for 323s and the like, once the AC supply is transformed to a lower voltage it's rectified to DC then inverted back to AC.

 

[Pumbaa]

I had to think for a minute, but it isn't a warning horn, its like a hum of electric in the motor or something like that, it is continuous when power is applied, but you notice it less at higher speeds because of the other sounds that are around. Particularly noticeable in the PMS (the coach with the traction motors and Pantograph) I think, from memory.

I wonder how much of the 313-322 units are the same? I'm pretty sure I remember 317/1s being AC motors compared to the 319s DC motors.

Very much so on the 321s over here as well; bloody things. Can hear them in the middle of the night, and tell which way it's headed too, as it's always nearer to London.