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Offline French_Fabrice  
#1 Posted : 20 November 2022 18:16:17(UTC)
French_Fabrice

France   
Joined: 16/05/2011(UTC)
Posts: 1,433
Location: Lyon, France
Hello Markliners,

I'm currently planning to convert the Snow Plow of Marklin 26830 kit (dated 1999, contains also a BR52 loco), with a recent Loksound 5 decoder.
This snow plow was also sold as a separate item #49963, some years later, with a different livery, but I think it is the same as mine (except the color).

I was lucky to find a sound project at ESU which matches a snow plow : Schneeschleuder Xrot-9214
I did all necessary changes in the sound project, and now it is ready.

I've recorded the snow plow (unmodified with old MM decoder) in the CS2, and played a bit with the functions:
F0: 2 lights over 3 lit in the lighting bar (lights on each side)
F1: sound + snow plow rotates at full speed (no way to reduce the speed) and motor is making some noises, because of way too quick rotation
F2: Change the rotation direction
F3: Whistle
F4 (+F0): Lights at each side shut and central light on.
Note: the lights are yellow LEDs.

Now the question:
The light bar is inserted above the snow plow and has 2 metal bars which touch 2 contacts in the PCB. I'm a bit perplex about how it runs ?
As there are only 2 contacts, I'm guessing one is + and the other is -. But how is it possible that when pressing F0, I get 2 lights on and F0+F4 I get only the 3rd light on (others are off) ?
The only explanation I can find is in the light bar, the central light is mounted in a reverse way (+ and - swapped), compared to the 2 others ... ?

Some shots:

UserPostedImage
Snow plow with light bar on top

UserPostedImage
Light bar front

UserPostedImage
Light bar back

UserPostedImage
PCB

Can anyone confirm my assumption about the wiring of the light bar ?
If I'm true, would I need a relay to switch the polarity of both metal bars ? (sorry to be so dumb in electronics)

All your inputs are welcome.

Cheers
Fabrice

PS:
I've already seen a project by Moritz, where he modified the electronics, but this is not what I'm looking for https://www.marklin-user...---Conversion-of-Decoder ThumpUp
I've also searched at Ross' articles, but unfortunately the one referring to 26830 is about the BR52, not the snow plow - However, it gave me ideas for the BR52 conversionThumpUp
thanks 1 user liked this useful post by French_Fabrice
Offline Ross  
#2 Posted : 20 November 2022 20:25:50(UTC)
Ross

Australia   
Joined: 25/09/2006(UTC)
Posts: 831
Location: Sydney, NSW
Hi Fabrice,

Thanks for the mention. I have two snow plough sets and have yet to do these conversions so I will look with interest what you come up with, good luck.
Ross
Offline bph  
#3 Posted : 22 November 2022 00:00:49(UTC)
bph

Norway   
Joined: 04/08/2018(UTC)
Posts: 611
thanks 1 user liked this useful post by bph
Offline French_Fabrice  
#4 Posted : 22 November 2022 07:50:55(UTC)
French_Fabrice

France   
Joined: 16/05/2011(UTC)
Posts: 1,433
Location: Lyon, France
Originally Posted by: bph Go to Quoted Post


Hello,

Very interesting !!!
Thanks a lot.

Fabrice
thanks 1 user liked this useful post by French_Fabrice
bph
Offline bph  
#5 Posted : 22 November 2022 10:48:14(UTC)
bph

Norway   
Joined: 04/08/2018(UTC)
Posts: 611
Originally Posted by: French_Fabrice Go to Quoted Post
Originally Posted by: bph Go to Quoted Post


Hello,

Very interesting !!!
Thanks a lot.

Fabrice


I used that board in my upgrade, and it works nicely.
https://www.marklin-users.net/forum/posts/t46568-26830-Schneeschleuder---rotary-snowplow---mSD3-upgrade

thanks 1 user liked this useful post by bph
Offline French_Fabrice  
#6 Posted : 22 November 2022 12:53:16(UTC)
French_Fabrice

France   
Joined: 16/05/2011(UTC)
Posts: 1,433
Location: Lyon, France
I didn't see your thread !

Thanks a lot again !
Fabrice
thanks 1 user liked this useful post by French_Fabrice
bph
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