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Offline Mille  
#1 Posted : 11 April 2024 06:09:50(UTC)
Mille

Sweden   
Joined: 02/02/2023(UTC)
Posts: 65
Location: Stockholm
There are 2 different magnets.
For low loco clearande and high
loco clearance.
Can anyone tell for exampl
how many millimeter low or high
clearande is?
Offline river6109  
#2 Posted : 11 April 2024 07:30:16(UTC)
river6109

Australia   
Joined: 22/01/2009(UTC)
Posts: 14,752
Location: On 1965 Märklin Boulevard just around from Roco Square
Originally Posted by: Mille Go to Quoted Post
There are 2 different magnets.
For low loco clearande and high
loco clearance.
Can anyone tell for exampl
how many millimeter low or high
clearande is?


Unfortunately I can't help you with your question but I'm using reflective opto couplers, which fit between sleepers (especially suitable for K-track) and the opto coupler is activated by the slider or pick up shoe, the set up is to create a circuit board and the moment that is done its a save and reliable detection method and speed hasn't got an issue with., the height of the opto coupler can also be increased by adding more 4 pin sockets to it, I've used it all over my layout (13m x 5m) never had a failure, you could activate signals (switching from red to green), turnouts, station platform lights etc. etc.

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https://www.youtube.com/river6109
https://www.youtube.com/6109river
5 years in Destruction mode
50 years in Repairing mode
thanks 1 user liked this useful post by river6109
Offline JohnjeanB  
#3 Posted : 11 April 2024 12:36:37(UTC)
JohnjeanB

France   
Joined: 04/02/2011(UTC)
Posts: 3,183
Location: Paris, France
Hi Mille
Usually low clearance is for small locos
High clerance is for wagons and larger locos where more space and possible locations.
One personal advice: don't install a magnet near the motor as it changes the magnetic field and also can demagnetize some cheap motors (happened to me.
I expect the working distance between magnet and Reed to be a few mm (3 to five) To be checked with your magnets before installation.

As you know:
- a strong magnet allows more possibilities (so any magnet will do)
- on some positions, the contact will close TWICE

I found very strong and compact magnets in the faller car system or on the Internet (cylinders of 2.5 mm diameter with 2.5 thickness.)
Alternately, you may select those
Noedym magnets
Cheers
Jean
Offline rhfil  
#4 Posted : 11 April 2024 16:23:55(UTC)
rhfil

United States   
Joined: 05/09/2014(UTC)
Posts: 435
Location: NEW HAMPSHIRE, Somersworth
The bottoms of most locos is closer to the track than other cars so it is harder to locate the magnet where it will not cause shorts. One advantage of reed switches is they allow operations that are specific to the car they are on. But that is also the disadvantage. One example is placing magnets on local passenger trains but not on express trains. That would make it possible to divert the locals into stations while the express passes them by.
thanks 1 user liked this useful post by rhfil
Offline Mille  
#5 Posted : 12 April 2024 05:10:50(UTC)
Mille

Sweden   
Joined: 02/02/2023(UTC)
Posts: 65
Location: Stockholm
Thanks for all good advices
Gone use my reedcontact so some
trains take a detour to avoid
rushhour on my stations😃

Offline Goofy  
#6 Posted : 12 April 2024 18:19:53(UTC)
Goofy


Joined: 12/08/2006(UTC)
Posts: 9,043
Brawa have reed contact that seems work together with Märklins L88.
Not sure if this work nice with Märklins magnet.
H0
DCC = Digital Command Control
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