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Basics: Technology-dependent back-fitting possibilitys

You ask us consistently, what is the best back-fitting for a loco. Remove the existing electronic completely, partial or remain it? Sadly we can’t give a global answer, while there exists to many versions. Although we will show you here an overview, which back-fitting type is the right one. First of all you have to check your available place in your loco. You don’t need a useful interface, when…

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Basics: Hints for fast recognizing of loco technology

While we don’t know what technology is used, we can not give common hints for it. Maybe you can find a proper back-fitting plan for a special loco in our examples. 1.) Engraved “D” on bottom side of gear is marking a 4-pin-gear. Here are all 4 contacts for digitalization existent. Without “D” you have to rebuild. 2.) Old Interface for 6 pol. interface cable. The decoder will be…

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Basics: Digital compatible gears

Conversion of a 3-lead LGB gear box to digital operation Old LGB gear boxes feature 3 leads, one pin (marked WS) is connected to track power and one of the two motor connectors. For digital operation the motor connector must be separated from this pin. The pictures show a simple conversion for digital operation: open the gear box and remove the electric motor (note the direction) shorten the motor contact…

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Basics: Current measurement of locos

Before digitalization of a loco you have to select the right decoder. Manufacturer’s data of current draw are not available in most cases or it is not reasonably usable. So it make’s sense to build a small measuring equipment for each loco, to measure the current. You need: (see picture) A LGB-transformer with apr. 22V(alt. a power supply) A meter for current measurement (Multimeter or analog instrument) . A…

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Automatic switching circuit with 1 channel switch decoder

To control a switch automatically with a 1 channel switch decoder, following circuit can be used. You will need 2 track contacts, a 1 channel switch decoder and locomotives with mounted magnet on the gear side. Here is a diagram of how everything should be connected: In this combination, the switch is automatically moved into the correct position before leaving the reverse loop. Note the polarity of the contact…

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Connection XXL / XL / XLS at Aristocraft Interface

The interface consists of two socket strips, of which however only one is used (see locomotive instructions) Again, you can easily connect a decoder Massoth with the basic functions (motor + lights). You need a 12-pole pin strip, which is connected to the decoder according to the plan below. The interface is symmetrical except for the two inner pins 6 + 7. The 4 external connections (track +/-) should…

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Connection XL/XLS at BRAWA Interface

You can also connect a XL/XLS Decoder to a Brawa Interface. Therefore you need two 9-pole plug connectors. Connect them like described below. Following special functions of the loco are usable. Light : Swiss illumination (3+1) in both directions. F1 : Light cabin F2 : Shunting lights (3+3) F3 : Smoke unit (CV115=3 parallel output F4 on key 3) Because of the higher amperage of the smoke unit F3+F4 are connected parallel. Alternatively,…

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Old 3pin Switch-drive

If you have old 3-pin Switch-drives from LGB, you can control this with our 4 channel-switching decoders. Here is a sketch how to connect it: The switching time should be set down a little in CV 51-58 (Value 66).

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