Comments on: Long Lash-Up Engines https://blog.model-train-help.com/2017/11/long-lash-up-engines.html?utm_source=rss&utm_medium=rss&utm_campaign=long-lash-up-engines Model railroads and model trains Wed, 22 Nov 2017 21:07:26 +0000 hourly 1 https://wordpress.org/?v=6.9.4 By: Frank B https://blog.model-train-help.com/2017/11/long-lash-up-engines.html#comment-20097 Wed, 22 Nov 2017 21:07:26 +0000 http://blog.model-train-help.com/?p=4582#comment-20097 Add up the stall currents of all the locos, and that is the maximum current the transformer needs to supply.
So if you have ten locos each taking 0.5 Amps, you need (at least) a 5 Amp transformer.
(But also add in the current taken by accessories run from the same transformer.)

To find the stall current of a loco, take the maximum voltage that would be applied, measure the resistance of the electric motor with a multimeter, and divide the voltage by the resistance to get the stall current.
Current in Amps = Voltage / Resistance

]]> By: Graeme https://blog.model-train-help.com/2017/11/long-lash-up-engines.html#comment-19990 Thu, 09 Nov 2017 02:16:55 +0000 http://blog.model-train-help.com/?p=4582#comment-19990 Hi Steven I don’t know wether this helps but I run 14 locos lashed up in 2&3 pulling 165 wagons between them on the flat and up 2% grades on curves and they have loads of power to spare. I use an NCE power cab with a 5 amp booster on about 300 feet of track. Hope this helps Graeme.

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