View single post by Tom Harbin
 Posted: Sun Dec 23rd, 2018 10:14 pm
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Tom Harbin

 

Joined: Sat Sep 1st, 2018
Location: Arizona USA
Posts: 213
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davecttr wrote: Tom, Check out the graph on the Pololu page.

You can see using a 1S battery with a 250mA loco should give 80% efficiency even when the battery is nearly depleted.

Contrast this with a 2S battery and you get over 90% efficiency with a 600mA loco!

I usually install 2 batteries in locos needing more than 250mA.


Dave,

Looks like I'm going to need to buy a new meter and set up some kind of DC supply if I want to do this right.
I bought my multi-meter back when I became a computer tech, 1973, it doesn't know what a milliamp is, well not very accurately.
My last DC train supply blew up eight years ago and gave me the excuse to go to DCC.
I think I have some old battery holders squirrelled away somewhere though.

I like the idea of limiting an engine's capacity based on its type.
A tender loco should have more range than a tank loco.

Tom


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