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Lm-3s ho

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fianet:
Note that the LM-3S is limited in the voltage not just amperage when trying to drive G scale locos.
If the railtruck requires more than 14-16 volts to get to the speed you require, then you need to move up to the LM4S.

If the G scale loco never requires the full 1 amp of the LM-3S limit and around 14 volts gets you up to full speed for that loco, go for it.

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