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Power a motor for testing

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  • Member since
    March, 2017
  • 63 posts
Power a motor for testing
Posted by gthomson on Thursday, January 31, 2019 8:13 AM

Excuse this question if it's goofy but I don't even know if such a thing exists but I have some work to do on some old engines and will want to test them on the work bench and not have to go back and forth to my layout. Is there some kind of mobile battery device that you could wire up to an engine to see if it's running?

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Posted by BigDaddy on Thursday, January 31, 2019 8:20 AM

I'm not sure what scale you are modeling or if you want to see the engine run or just the motor turn over.

A 9 V battery ought to make something happen in HO or N.  You could buy a wall wart, those plug in the wall boxes that give you 12 volts DC and rig up a test track or aligator clips or probes to touch the motor contacts.

Henry

COB Potomac & Northern

By the Chesapeake Bay

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Posted by mbinsewi on Thursday, January 31, 2019 8:49 AM

Along with what Henry suggest, I have an old power pack I use. Two wires, with alligator clips on the ends, and a short piece of track, on the bench.  I also use this, along with a multimeter, to test for stall current.

Mike.

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Posted by gthomson on Thursday, January 31, 2019 8:54 AM

Yes HO scale so I could just use a 9V battery? Never thought of that. I don't have a spare power pack but I guess I could go out and buy an old one cheap from the used hobby store. I guess a few pieces of track make sense to confirm it's picking up the voltage from the wheels intead of just seeing if it has life. 

All good suggestions, thanks gents. 

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Posted by RR_Mel on Thursday, January 31, 2019 9:12 AM

If you plan on doing it often I would suggest picking up a used power pack off eBay.
 
I have made all kinds of test leads for my bench power supply as well as a 3ft 1” x 2” with a section of flex track for testing.
 
I also buy cheapo digital volt / amp panel meters off eBay to make testing easier.
 
 
 
My go to glue is Amazing Goop and I use it to glue the panel meters to my power supplies.
 
 
Blue is volts and red is current
 
 
Dual voltage supply
 
  
 
 
Mel
 
 
My Model Railroad   
 
Bakersfield, California
 
I'm beginning to realize that aging is not for wimps.
 
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Posted by SeeYou190 on Thursday, January 31, 2019 4:44 PM

gthomson
I don't even know if such a thing exists but I have some work to do on some old engines and will want to test them on the work bench and not have to go back and forth to my layout. Is there some kind of mobile battery device that you could wire up to an engine to see if it's running?

.

I use a regulated DC power supply set to 12 volts. You can get Chinese ones on eBay for about $60.00, and they are good enough. This one was less than $50.00 a couple of years ago. I have verified the readings with a Fluke DVOM, and they are spot on!

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I run test leads to the locomotive to make tests.

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-Kevin

.

Happily modeling the STRATTON & GILLETTE RAILROAD located in a world of plausible nonsense set in August, 1954.

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  • From: Reading, PA
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Posted by rrinker on Thursday, January 31, 2019 6:04 PM

 If you are using DCC - just remember to NEVER connect DC power to the motor terminals if there is a decoder installed. It will prove if the motor works or not, but it will also fry the decoder. It's OK to apply DC to the wheels/track pickup wires, except for some really old DCC decoders that couldn;t work with DC, but it may or may not make the motor turn because the decoder can be configured to ignore DC.

                                        --Randy

 


Modeling the Reading Railroad in the 1950's

 

Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.

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  • From: Western, MA
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Posted by richg1998 on Thursday, January 31, 2019 6:20 PM

I have been using HO trains for some years and keep an old power pack handy with two meters at one time.

http://www.trainelectronics.com/Meter_HF/index.htm

For DCC, I cobbled together some parts and an eight pin socket, can motor with a flywheel, couple LED's 1k resistors for a decoder tester.

Rich

N

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    April, 2018
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Posted by NS6770fan on Thursday, January 31, 2019 8:12 PM

I use a Woodland Scenics powered wheel cleaner double sided taped to an old MRC transformer. It does the job well and it’s fairly compact. I use this while maintaining my DCC fleet without problems.

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    March, 2017
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Posted by gthomson on Sunday, February 03, 2019 3:46 PM

SeeYou190
I use a regulated DC power supply set to 12 volts. You can get Chinese ones on eBay for about $60.00, and they are good enough. This one was less than $50.00 a couple of years ago. I have verified the readings with a Fluke DVOM, and they are spot on!

 

Kevin, i guess this was i was originally thinking of but wasn't sure if it existed. 

What's the foam piece holding the engine?

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Posted by gregc on Sunday, February 03, 2019 4:18 PM

gthomson
SeeYou190
I use a regulated DC power supply set to 12 volts. You can get Chinese ones on eBay for about $60.00, and they are good enough. This one was less than $50.00 a couple of years ago. I have verified the readings with a Fluke DVOM, and they are spot on!

greg - Philadelphia & Reading / Reading

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