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Electrics - Electrics - DC - Getting You Started. - Your Model Railway Club
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 Posted: Fri Apr 21st, 2017 10:51 am
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Hi All.    This isn't my first new Loco, but I am never certain as to how long it has to be run on DC, before one fits a Decoder . Half an hour each way? But at the time of writing, I only have a "four foot long plank".
I can only assume that is on a full size layout. Please advise. Kevin

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 Posted: Fri Apr 21st, 2017 11:04 am
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Kevin, if you haven't got a roundy-roundy layout, then that is when a Rolling Road is handy
https://www.dccconcepts.com/product/rolling-road-multi-gauge-6-axle/
http://www.rollingrails.co.uk/



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 Posted: Fri Apr 21st, 2017 11:14 am
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Hi Ron.   Thank you for your reply. That sounds a good idea, but, I haven't got one right now .I suppose I could purchase one, but when I mentioned s rolling Road on,the forum before, I had some negative remarks 
made about them . And at the time it put me off buying one.    All the best. Kevin

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 Posted: Fri Apr 21st, 2017 01:40 pm
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Hi Kevin,

Rolling roads are very useful, not just for "running in". Good investment.

I'm personally not sure about this running-in business. Especially with modern nylon/delrin gear sets and precision (CNC machine) cut hard brass worms. I suspect the most significant effect is on the motor - wearing the brush face to the profile of the commutator or bedding in the bearings. I use a fair amount of Ultrascale and NWSL products, none of their gear sets seem to need running-in.

If running-in is recommended, it begs the question - what is it doing? If like an older car it is to remove those bits of metal/plastic that shouldn't be there shouldn't running in be followed by a meticulous clean and relube to get rid of bits from the lubricants?

As NWSL puts it: "You can't wear a gear in, you can only wear it out".  

Nigel




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 Posted: Fri Apr 21st, 2017 02:36 pm
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Hi Kevin

Assuming you have a DC controller, which is what you would need to power a DC loco on a rolling road, you could just buy a circle of setrack curves for about £10.

Set up the circle of track on the kitchen table or whatever, connect the DC power supply and run-in any DC loco for as long as you like.


Ed



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 Posted: Fri Apr 21st, 2017 03:25 pm
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Hi Ed.  Thank you.  I never gave that a thought, as far as a D C controller is concerned I have an "entry level" Bachmann DC controller, basic, but effective.  All the best. Kevim

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 Posted: Fri Apr 21st, 2017 03:36 pm
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Hi Nigel.  Thank you. You are doing it again? talking in riddles that is, way above my knowledge ! I would like to know more about DCC and model railways, but, it would seem that everyone has had a model railway, during the the 40 odd years that I was travelling half way around the world on "Trains, Boats and Aeroplanes". But you can't have your cake and eat it. Well I'm here now and trying to catch up. All the best. Kevin

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 Posted: Mon Apr 24th, 2017 09:26 pm
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Hi Kevin,

Riddles? One of the things in this hobby that really helps is knowing what you are working with.

With all this improved precision and materials, what are we actually doing when running in that engine? I really don't know why we do it (motor excepted, and that's probably been run in at the factory anyway).

If you do use a circle of track, remember to flip the engine around every now and again to equalize the centrifugal force on the bearings. And to run it backwards and forwards. Very important. So I've read. So it must be true. ;-) ;-)

Nigel






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