Buffer (capacitor) for 39004 DB Class 01 Steam Locomotive

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Buffer (capacitor) for 39004 DB Class 01 Steam Locomotive

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Puttputtmaru		#1 Posted : 20 February 2024 17:01:51(UTC) Retweet
Joined: 15/02/2021(UTC) Posts: 201 Location: Quebec, Montreal		Hello, I would like to start retrofitting some buffer (capacitor) first to my Märklin 39004 DB Class 01 Steam Locomotive but also to other locos. This will be my first try in the matter. 1)How to I know if the decoder can take one? 2)How do I know which size to use? 3) Any specific advice? 4) Any brand in particular? Yes I clean my tracks but still some locos run better than others. All the locos I have that come with buffer already installed are much more fun to run. As a side note why does the loco stops always in the most out of reach location? LOL

1 user liked this useful post by Puttputtmaru		5HorizonsRR
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H0		#2 Posted : 21 February 2024 08:45:29(UTC) Retweet
Joined: 16/02/2004(UTC) Posts: 15,271 Location: DE-NW		Originally Posted by: Puttputtmaru 1)How to I know if the decoder can take one? The simple solution (capacitor, diode, resistor) can be used with every decoder. The smart solutions with gold cap that require decoder support are a different story.
		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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einotuominen		#3 Posted : 21 February 2024 12:14:06(UTC) Retweet
Joined: 19/09/2022(UTC) Posts: 385 Location: Kaarina		Originally Posted by: Puttputtmaru 2)How do I know which size to use? 3) Any specific advice? Hi, 2. I'd advice you to buy 470uF capacitors and use two in parallel. They are most likely to fit in to the limited space instead of one 1000uF capacitor. 3. See the Märklin of Sweden's video on this: -Eino

3 users liked this useful post by einotuominen		marklinist5999, bph, pa-pauls
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Puttputtmaru		#4 Posted : 21 February 2024 15:28:58(UTC) Retweet
Joined: 15/02/2021(UTC) Posts: 201 Location: Quebec, Montreal		Thanks einotuominen I had forgotten about that video will have a second look at it. HO appreciate the answer but some more explaining would be warranted, a bit too nebulous for me. From other videos I have looked at, seems like going the ESU decoder and putting one of their buffer way is the easiest but seems to me that replacing a perfectly good decoder (that I like) is going a bit extreme. May be I will do it on some locos with older decoder eventually. This is a very well explained run down of what is needed: https://youtu.be/xlXlx4Qz34A?si=wFapIpRHqKhtxnea


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einotuominen		#5 Posted : 21 February 2024 15:31:17(UTC) Retweet
Joined: 19/09/2022(UTC) Posts: 385 Location: Kaarina		Originally Posted by: Puttputtmaru Thanks einotuominen I had forgotten about that video will have a second look at it. HO appreciate the answer but some more explaining would be warranted, a bit too nebulous for me. From other videos I have looked at, seems like going the ESU decoder and putting one of their buffer way is the easiest but seems to me that replacing a perfectly good decoder (that I like) is going a bit extreme. May be I will do it on some locos with older decoder eventually. Hi, installing the buffer capacitor to ESU and Märklin decoders is basically identical task. -Eino


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Puttputtmaru		#6 Posted : 21 February 2024 15:34:43(UTC) Retweet
Joined: 15/02/2021(UTC) Posts: 201 Location: Quebec, Montreal		Originally Posted by: einotuominen Originally Posted by: Puttputtmaru Thanks einotuominen I had forgotten about that video will have a second look at it. HO appreciate the answer but some more explaining would be warranted, a bit too nebulous for me. From other videos I have looked at, seems like going the ESU decoder and putting one of their buffer way is the easiest but seems to me that replacing a perfectly good decoder (that I like) is going a bit extreme. May be I will do it on some locos with older decoder eventually. Hi, installing the buffer capacitor to ESU and Märklin decoders is basically identical task. -Eino I understand but I am a bit reluctant because from what I understand the Märklin decoder are not friendly to all buffers and I do not yet know how to be sure they are. But you are right might as well go that way first and if I blow it up I will buy a ESU lol


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5HorizonsRR		#7 Posted : 21 February 2024 18:55:11(UTC) Retweet
Joined: 05/12/2004(UTC) Posts: 2,868 Location: CA, USA		I'm not sure a decoder will/should care? They should be consuming power, but not knowing whether it comes from the track or the capacitor? I am also not an electrical engineer, so maybe I'm wrong. What I can speak to is space. These (SMD-style) cost a little more, but are incredibly compact: https://www.digikey.com/...s/EEH-ZU1E102UP/21727057 Edited by user 23 February 2024 05:24:29(UTC) \| Reason: Not specified
		SBB Era 2-5

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mario54i		#8 Posted : 21 February 2024 19:09:59(UTC) Retweet
Joined: 28/03/2007(UTC) Posts: 284 Location: Torino,		Originally Posted by: 5HorizonsRR What I can speak to is space. These (SMD-style) cost a little more, but are incredibly compact: https://www.digikey.com/...s/EEH-ZU1E102UP/21727057 Same size of a regular 1000 uF 25 V radial leaded capacitor, 10 mm diameter 17 mm height

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bph		#9 Posted : 22 February 2024 15:27:40(UTC) Retweet
Joined: 04/08/2018(UTC) Posts: 997		if your locomotive has a SUSI plug, this might be an alternative way to wire it up: https://www.mittelleiter-magazin.de/uncategorized/susi-schnittstelle-fuer-puffer-schaltung-nutzen/

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Puttputtmaru		#10 Posted : 22 February 2024 17:27:56(UTC) Retweet
Joined: 15/02/2021(UTC) Posts: 201 Location: Quebec, Montreal		Originally Posted by: bph if your locomotive has a SUSI plug, this might be an alternative way to wire it up: https://www.mittelleiter-magazin.de/uncategorized/susi-schnittstelle-fuer-puffer-schaltung-nutzen/ Intriguing and worth a look. Simpler and cheaper is always good. Thanks

2 users liked this useful post by Puttputtmaru		marklinist5999, bph
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Puttputtmaru		#11 Posted : 23 February 2024 03:43:37(UTC) Retweet
Joined: 15/02/2021(UTC) Posts: 201 Location: Quebec, Montreal		bph More thanks for the link, this magazin has a wealth of information. More reading ahead.

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