Old 02-07-2005, 01:26 AM   #1
Andrew Matuska
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Default New BNSF ES44DC Horn and Bell

For those who have seen the new BNSF ES44DC in action or just sitting did you noticed the new bell and horn. The bell is electronic and sounds electronic, it sounds the normal bell but more of a ‘gong’ to it. Not like the old Milwaukee Road electronic bell for those of you that remember that. The horn is a 5-chime with 1 bell forward and 4 back. It really does sound unique[/u]
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Old 02-07-2005, 02:01 AM   #2
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http://www.railpictures.net/viewreject.php?id=90503

They could at least make it look like a bell! I also noticed that it says "ES44DC" on the side, instead of "Dash 10-44CW." I wonder if BNSF's new ES44ACs will actually have ES44AC on the side? :P
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Old 02-07-2005, 09:39 PM   #3
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Default NEW BNSF ES44DC'S

I saw 7653 at Downers Grove, IL. on Saturday. The motor sounded very unusual! To make the lash-up even better, there was a Santa Fe SD75M second! 7653 was leading a Stack Train towards Chicago.
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Old 01-27-2006, 03:29 PM   #4
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Default Horn

I have a picture of the horn if you want to see it.
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Old 01-27-2006, 04:33 PM   #5
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way to drag up the dead (post)
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Old 01-27-2006, 04:52 PM   #6
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Quote:
Originally Posted by Cyclonetrain
way to drag up the dead (post)
What's wrong with that? I think that the photo looks cool.
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Old 01-27-2006, 07:42 PM   #7
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Quote:
Originally Posted by Cyclonetrain
way to drag up the dead (post)
Thats what forums are for. Instead of him starting a new thread just to put up the pic, he saw that it fit into this one and it does. The forums are open for as long as the moderators leave it open meaning you can bring it back up at ANY time. If you don't like it...tough...keep the comment to yourself (its not what the thread is about!).

It's good to have a visual aid when reading about the horn. Thanks bnsfnut4924!
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Old 01-27-2006, 07:59 PM   #8
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Quote:
Originally Posted by Cyclonetrain
way to drag up the dead (post)
It would be helpful if you could link to the "original" thread.
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Old 01-30-2006, 12:46 AM   #9
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I also have a picture of the bell.
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Old 01-30-2006, 12:17 PM   #10
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Wow, big page stretcher... it seems 4 times as large as my screen. Would you mind resizing them a bit?
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Old 01-30-2006, 11:06 PM   #11
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I can shrink it more if you need.
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Old 01-31-2006, 12:17 AM   #12
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Thanks... I've never seen a bell like that before.
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Old 01-31-2006, 01:46 AM   #13
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That is a pretty weird looking bell, I'm used to the old bells you see on the DASH9's and SD70M's.
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Old 01-31-2006, 02:46 AM   #14
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Quote:
That is a pretty weird looking bell, I'm used to the old bells you see on the DASH9's and SD70M's.
It's electronic and not a standard bell.

On another note, did anyone else notice that GE can't even put a horn on right?
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Old 01-31-2006, 09:59 PM   #15
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Thats a bell? Looks like a speaker to me! Bells are made of Brass
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Old 02-01-2006, 02:05 AM   #16
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Quote:
Originally Posted by cmherndon
It's electronic and not a standard bell.

On another note, did anyone else notice that GE can't even put a horn on right?
Are you talking about most of the horns facing backwards? That's the way every new GEVO is, but don't ask me why since I don't know much about horns.
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Old 02-01-2006, 03:39 AM   #17
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Quote:
Originally Posted by BNSF_SD40-2B
Are you talking about most of the horns facing backwards?
Yes. The entire horn is mounted backwards In this case, it's an Airchime K5HLR2345 (or something like that). The horn should be turned around the other way for maximum effectiveness. Think about the doppler effect for a second and how a train horn sounds like it's changing pitch as it passes you. It's also a little quieter when it's going away due to the fact that not as many of the bells are facing you. One bell facing you won't make as much noise as four, and thus said warning device is not as effective. Plus, I highly doubt these locomotives are set up to run long hood forward anyway.
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Old 02-01-2006, 04:47 AM   #18
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Quote:
Originally Posted by cmherndon
Yes. The entire horn is mounted backwards In this case, it's an Airchime K5HLR2345 (or something like that). The horn should be turned around the other way for maximum effectiveness. Think about the doppler effect for a second and how a train horn sounds like it's changing pitch as it passes you. It's also a little quieter when it's going away due to the fact that not as many of the bells are facing you. One bell facing you won't make as much noise as four, and thus said warning device is not as effective. Plus, I highly doubt these locomotives are set up to run long hood forward anyway.
From the Five Chime Consultants page:

The US Code of Federal Regulations has long specified a minimum decibel requirement for the "audible warning device" on railroad locomotives: 96dB(A) at 100 feet forward of the locomotive in its direction of travel (49CFR229.129). Effective December 18, 2004, the regulation also began to specify a maximum volume of 110dB(A) at 100 feet. Contemporaneously, and apparently in response to this regulation, AirChime began producing 5-chime K horns for US locomotives that made use of the low-pitched 1L bell, which plays C (261Hz).

So it somehow has to due with some new regulation I guess, maybe the mounting is part of it?
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Old 02-01-2006, 12:24 PM   #19
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Isn't it to cut down on noise pollution?
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Old 02-01-2006, 12:53 PM   #20
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Quote:
Originally Posted by milepost 48.1
So it somehow has to due with some new regulation I guess, maybe the mounting is part of it?
Not really sure if mounting has to do anything with it since I do know that NS is receiving SD70M-2's with K5LLAR1 horns. Those have 4 forward and 1 reversed. It just seems to me that it would be easier to get that minimum 110 dB at 100' with more bells facing forward.

Quote:
Originally Posted by Frederick
Isn't it to cut down on noise pollution?
Not sure about that either, but you could be right. I never have considered a horn to be noise pollution. I guess if you get enough people to complain about it, it can be.
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Old 02-01-2006, 02:59 PM   #21
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All I know for sure is that BNSF and UP both got their GE's like this.

I've noticed ever since the GEVO came out that they seem more quiet when they are coming my way compared to the DASH9's and SD40-2's.
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Old 02-01-2006, 04:24 PM   #22
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CSX has quite a few of their horns mounted in that way. Never shot CSX before I did in Brunswick, MD over Christmas week. The older units have most of them mounted forward, but the newer, wide cab power had most of them mounted towards the rear. They're much louder going away from you then coming towards you. Good for those railfans that seem to jump at the sound of a close horn blast.
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Old 02-09-2006, 06:52 AM   #23
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When a horn is measured for db rating, it is done in an anechoic chamber. Completely free of any outside noise. One of the reasons the horn may be facing to the rear is to reduce the amount of noise for the crew in the cab. This is why it is mounted on the long hood and not the top of the cab.
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