Retrofitting Smoke Unit 37960/37961

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Retrofitting Smoke Unit 37960/37961 - Is Class 96.0 Smoke Unit Compatible?

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dickinsonj		#1 Posted : 14 August 2025 21:17:40(UTC) Retweet
Joined: 05/12/2008(UTC) Posts: 1,844 Location: Crozet, Virginia		I have two Gt 2x 4/4s which do not have smoke units and I am wondering if anyone has tried to retrofit the smoke unit from a 39961 in this application? The smoke units are available, Marklin E343713, but I have no way to determine if they would fit in the older models. Thanks for any help anyone can provide!
		Regards, Jim I have almost all Märklin and mostly HO, although I do have a small number of Z gauge trains! So many trains and so little time.


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bph		#2 Posted : 15 August 2025 15:21:28(UTC) Retweet
Joined: 04/08/2018(UTC) Posts: 1,189		That was an interesting idea. I have never gotten around to trying to fit a 7226? in my 37960. (I have noticed others on the forum have fitted one.) Wonder how E343713 looks, since it's quite expensive compared to a 7226? Please keep us updated if you order one for testing.

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H0		#3 Posted : 15 August 2025 15:39:42(UTC) Retweet
Joined: 16/02/2004(UTC) Posts: 15,487 Location: DE-NW		Originally Posted by: bph Wonder how E343713 looks, since it's quite expensive compared to a 7226? Maybe page 30 of the loco manual 39961 gives a hint. Could be Seuthe 21 or 22 with a custom plug at the end. I assume the loco body will not have a hole in the smokestack, so some careful drilling will be required.
		Regards Tom --- "In all of the gauges, we particularly emphasize a high level of quality, the best possible fidelity to the prototype, and absolute precision. You will see that in all of our products." (from Märklin New Items Brochure 2015, page 1) ROFLBTCUTS

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dickinsonj		#4 Posted : 15 August 2025 16:15:56(UTC) Retweet
Joined: 05/12/2008(UTC) Posts: 1,844 Location: Crozet, Virginia		Good feedback guys - thanks. Tom is right that there is no hole in the smokestack, so drilling would be required, although it gets more confusing from there. It is also true that the manual shows a conventional smoke unit in the drawing on page 30. All three Gt 2x 4/4s use the same drawing which shows neither the speaker nor the smoke unit and I suspect it dates from the introduction of the 37961. I did a search and found this picture from Märklin for the E343713, which is the smoke unit listed on both the parts diagram and in the parts store for 39961. But it looks like it is probably a synchronized smoke unit, which AFAIK 39961 does not have. So something is wrong, I suspect in the Märklin parts listing. I will probably be happy to just upgrade the decoder and add a speaker to my new 37961 until I can find more information about the smoke unit. My dealer lists that smoke unit but with a disclaimer that it might not fit your model.
		Regards, Jim I have almost all Märklin and mostly HO, although I do have a small number of Z gauge trains! So many trains and so little time.

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bph		#5 Posted : 15 August 2025 17:01:05(UTC) Retweet
Joined: 04/08/2018(UTC) Posts: 1,189		Originally Posted by: H0 Originally Posted by: bph Wonder how E343713 looks, since it's quite expensive compared to a 7226? Maybe page 30 of the loco manual 39961 gives a hint. Could be Seuthe 21 or 22 with a custom plug at the end. I assume the loco body will not have a hole in the smokestack, so some careful drilling will be required. You are probably right regarding a Seuthe 21 or 22, but I kind of expected more for that price. And some careful drilling will be required. And if a 21 or 22 is used, you might also need to widen the hole in the bottom of the boiler? or? It could also be a more custom design. eg in the 39480, the smoke generator can be sort of described as a double 72270 Originally Posted by: dickinsonj Good feedback guys - thanks. Tom is right that there is no hole in the smokestack, so drilling would be required, although it gets more confusing from there. It is also true that the manual shows a conventional smoke unit in the drawing on page 30. All three Gt 2x 4/4s use the same drawing which shows neither the speaker nor the smoke unit and I suspect it dates from the introduction of the 37961. I did a search and found this picture from Märklin for the E343713, which is the smoke unit listed on both the parts diagram and in the parts store for 39961. But it looks like it is probably a synchronized smoke unit, which AFAIK 39961 does not have. So something is wrong, I suspect in the Märklin parts listing. I will probably be happy to just upgrade the decoder and add a speaker to my new 37961 until I can find more information about the smoke unit. My dealer lists that smoke unit but with a disclaimer that it might not fit your model. that it's most likely not a picture of an E343713 as the picture shows a synchronised smoke unit, and the 39661 does not have that.

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dickinsonj		#6 Posted : 15 August 2025 17:12:49(UTC) Retweet
Joined: 05/12/2008(UTC) Posts: 1,844 Location: Crozet, Virginia		Originally Posted by: bph that it's most likely not a picture of an E343713 as the picture shows a synchronised smoke unit, and the 39661 does not have that. You are correct. I just rechecked that and it is a picture of an E340051. That came up from a search for the E343713, and I did not check that it was correct. There is a Märklin listing for the E343713 priced at €48.00, but no images or description. So I guess the E343713 might match the unit in the manual diagram and would work with our locomotives, but it is surprising that it cost as much at the synchronized smoke unit and there is no picture. More investigation will be required.
		Regards, Jim I have almost all Märklin and mostly HO, although I do have a small number of Z gauge trains! So many trains and so little time.

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bph		#7 Posted : 15 August 2025 18:02:16(UTC) Retweet
Joined: 04/08/2018(UTC) Posts: 1,189		Originally Posted by: dickinsonj Originally Posted by: bph that it's most likely not a picture of an E343713 as the picture shows a synchronised smoke unit, and the 39661 does not have that. You are correct. I just rechecked that and it is a picture of an E340051. That came up from a search for the E343713, and I did not check that it was correct. There is a Märklin listing for the E343713 priced at €48.00, but no images or description. So I guess the E343713 might match the unit in the manual diagram and would work with our locomotives, but it is surprising that it cost as much at the synchronized smoke unit and there is no picture. More investigation will be required. And eg the dual smoke unit for the 39480, is also priced 48€, even if that is a "conventional" unit. But still, the price on the E343713 is a bit high...... Perhaps someone who owns a 39961 can open it and take some measurements, and a picture of the smoke generator?

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