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UK electric train horn with DC 110V input

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Vectus

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Does anyone know below type of electric train horn? Any same application in our UK rail industry?

The input horn is DC110V, and the volume of the electric horn can be adjusted. The volume range of the electric horn satisfies the volume regulation in UIC 644-1980 standard.
 
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randyrippley

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are you trying to identify a horn you've found? Or source a replacement with that specification?
 
Kneedown

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The horn on HST's and Class 56's is electrically operated, as far as I know the only UK stock to be such.
As to the finer details and voltage i'm really not sure.
 
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SPADTrap

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Isn't a class 700 depot whistle an mp3 played from a speaker?
 
Highlandspring

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Kneedown said:
The horn on HST's and Class 56's is electrically operated, as far as I know the only UK stock to be such.
As to the finer details and voltage i'm really not sure.
Click to expand...
I can’t say for class 56s because I don’t know but HST powercar horns are electrically operated (via HV1 - HV4 110V contacts in the control cubical, selected by the position of the driver’s horn switch HSa - HSd) but the horn trumpets themselves are the usual air/diaphragm operated type. G flat and E flat at 370Hz and 311Hz respectively in case you’re wondering. The only documentation I have is for powercars pre MTU rebuild so this may have changed, though I don’t particularly see why it would’ve.

Edinburgh trams play a recording of a bell through loudspeakers rather than actually having a bell, which seems a bit pointless, though they do also have a seperate (loud!) horn.
 
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broadgage

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Most older diesel locomotives used a nominal 96 volt battery (48 cell lead acid) for starting and auxiliary purposes. That would be about 110 volts when on charge from the running engine.
Newer designs such as the class 66 use a lower voltage, 64 volts nominal and a bit more on charge.
Smaller shunting engines often used 24 volt electrics, sometimes being based on HGV practice.
 
D365

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Highlandspring said:
Edinburgh trams play a recording of a bell through loudspeakers rather than actually having a bell, which seems a but pointless, though they do also have a seperate (loud!) horn.
Click to expand...

For the tram manufacturer the benefit will be that they can provide any kind of sound necessary at little-to-no cost.

Although on the other hand, Stagecoach requested physical bells again for the Sheffield tram-trains.
 
TC60054

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D365 said:
For the tram manufacturer the benefit will be that they can provide any kind of sound necessary at little-to-no cost.

Although on the other hand, Stagecoach requested physical bells again for the Sheffield tram-trains.
Click to expand...

Most modern UK tram bells / horns are actually just recordings played through speakers. The only exceptions that I can think of were the T68s (on street and off street horns were air, the M5000s I believe are recordings of these!), the Supertram fleet (physical bells, air horns on the Siemens vehicles, electronic horns on the 399s) and the Tramlink bells, again I believe these are physical bells.
 
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robbeech

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TC60054 said:
Most modern UK tram bells / horns are actually just recordings played through speakers. The only exceptions that I can think of were the T68s (on street and off street horns were air, the M5000s I believe are recordings of these!), the Supertram fleet (physical bells, air horns on the Siemens vehicles, electronic horns on the 399s) and the Tramlink bells, again I believe these are physical bells.
Click to expand...
Very poor ones too!
The Nottingham ones are the ones I hear most frequent. Poor quality recording of a poor quality Bell.
 
Kneedown

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Highlandspring said:
I can’t say for class 56s because I don’t know but HST powercar horns are electrically operated (via HV1 - HV4 110V contacts in the control cubical, selected by the position of the driver’s horn switch HSa - HSd) but the horn trumpets themselves are the usual air/diaphragm operated type. G flat and E flat at 370Hz and 311Hz respectively in case you’re wondering. The only documentation I have is for powercars pre MTU rebuild so this may have changed, though I don’t particularly see why it would’ve.

Edinburgh trams play a recording of a bell through loudspeakers rather than actually having a bell, which seems a bit pointless, though they do also have a seperate (loud!) horn.
Click to expand...

Thanks for the detail, most informative!
I remember the Eb and Gb tones from watching a series called "Railwatch" back in the late 80's.
I would imagine 56's horns work on the same principle as they are very similar internally and electrically to HST's, although they lack the "soft" horn volume that HST's have.
While 58's had many internal similarities to 56's, I believe they went back to a conventional air valve to operate the horn, as it took a bit more strength to operate, as opposed to the fingertip touch to operate a 56 or HST.
 
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southern442

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TC60054 said:
Most modern UK tram bells / horns are actually just recordings played through speakers. The only exceptions that I can think of were the T68s (on street and off street horns were air, the M5000s I believe are recordings of these!), the Supertram fleet (physical bells, air horns on the Siemens vehicles, electronic horns on the 399s) and the Tramlink bells, again I believe these are physical bells.
Click to expand...
It is far more commonplace in Europe as well.
 
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Vectus

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randyrippley said:
are you trying to identify a horn you've found? Or source a replacement with that specification?
Click to expand...
I am looking for a UK supplier who can supply such electric horn so that It does not need to change from 12 V

thanks
 
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FQTV

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Is this an (albeit tenuous) opportunity to link to the YouTube Rover 75 Deltic video?

 
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TractiveEffort

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Highlandspring said:
I can’t say for class 56s because I don’t know but HST powercar horns are electrically operated (via HV1 - HV4 110V contacts in the control cubical, selected by the position of the driver’s horn switch HSa - HSd) but the horn trumpets themselves are the usual air/diaphragm operated type. G flat and E flat at 370Hz and 311Hz respectively in case you’re wondering. The only documentation I have is for powercars pre MTU rebuild so this may have changed, though I don’t particularly see why it would’ve.

.
Click to expand...

GWR HST have an EP valve module under the desk, this is fed direct from the horn switch, no relays involved, the horn supply comes from the standard ‘52’ live cable, via the horn switch and then through the EV valve - so it goes nowhere near the cubicle. Each of the 4 tones has an OTMR feed.
 
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