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Why do Marklin railcars and trains with double bi- direction sliders need to be double clikced befo
 Joined: 10/02/2021(UTC) Posts: 3,908 Location: Michigan, Troy
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Just wondering? Must have to do with the relay.
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 Joined: 04/02/2011(UTC) Posts: 3,563 Location: Paris, France
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Hi Simple Märklin fan from a long time here but without direct connections with Märklin. Why four positions? This allows to have one position being stopped at station with headlights on. This further allows to have 2 locos on the same circuit with one being active while the other one is stopped (at station). Agreed this last operation may require some resynchronizing using the manual lever to change the relay (in use by Märklin until approx. 1960. According to some authors, the "other" reason for Märklin not to use the ratchet relay (2 positions) before 1959 was patents. So the four-position relay uses a drum being rotated by a solenoid by 1/8th of a turn with 2 contacts Here is one late version with an anti-kick contact  Fig 1 : the magnetic circuit Fig 2: the solenoid and contact holder Fig 3 : the drum Notice the 2 adjacent rotating surfaces 1 is metal and the other is bakelite Fig 4 : the drum axle holder Fig 5 : the ratchet Fig 6 : the anti-kick contact. It is a later addition (around 1958). When the armature is closed, the nut on the ratchet disconnects the motor to prevent the "Bocksprung" (buck jump) The spring is not represented Cheers Jean |
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 1 user liked this useful post by JohnjeanB
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Joined: 16/02/2004(UTC)
Posts: 15,446
Location: DE-NW
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Originally Posted by: marklinist5999  Just wondering? Must have to do with the relay. Modern decoders remember the direction. When they come new out of the box or out of storage, the direction may not match the direction in the digital controller. Clicking twice will sync controller and decoder. When they were used in reverse and the controller does not remember the direction, a "double click" may also be needed after power-up. This behaviour is not limited to trains with two sliders. |
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  |
1 user liked this useful post by H0
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Joined: 10/02/2021(UTC) Posts: 3,908 Location: Michigan, Troy
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Thank's Tom! Because my layout is a horse shoe dogbone, the direction depends on where I set the train on it, as well as the direction. Trains in unison follow each other so as not to collide. Once I turn headlights on, I know which way it will run, then I check the train parked in the station before I set them off to go. The station is on an oval, and the town oval on the opposite side has one, so turnouts also have to be set so trains don't enter them or exit them when two or three are running the entire loop. I don't use automation or events much because there are not enough signals nor blocks.
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Why do Marklin railcars and trains with double bi- direction sliders need to be double clikced befo
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