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Track Electrical & Engines Questions
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 Posted: Thu Nov 19th, 2015 02:44 am
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George W
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Been gone a bit, but I'm back at it.

So, I've got the basics of my new table layed out. It's actually three modular bits, one large oval base track and two smaller ring tracks that can be placed anywhere within the larger oval.

I'm trying to figure out how to approach some electrical / technical issues.

1. I have two Bachmann Porters, one DC the other DCC, the DCC is much slower running than the DC one and I'm wondering it there's a way to change that some. (Disconnect the DCC?) I'm sure there's a gearing diffrence too, but I can't change that. The speed diffrence is 50% or more.

2. The Oval is 22" X 60" and the engines (both) seem to slow down on the track as it gets farther from the power connection. Connections are tight, several are soldered ... Wondering if I should run a feeder lines to the other side of the loop. This is even without the other rings connected.

3. I'm running all three tracks off one power supply and I'm ending up with the DCC Porter crawling along, the DC Porter going pretty good and a check HO engine flying so fast I'm surprised it stays on the tracks.
I'm thinking to just wire a small potentiometer pot on to all three tracks, ramp up the power supply and adjust each one individually ... Does that idea make electrical sense?

Other than these issues I'd like to work out, it runs pretty good.

Thanks in advance for any help. Off to find some mini potentiometers somewhere online 😰



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George W.
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 Posted: Thu Nov 19th, 2015 03:44 am
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Si.
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Hi George.

Be careful with 'mini potentiometers' !!!

You would need for sure, a heavy-duty wire-wound pot.

The lil' ones only handle about 1/4 - 1/2 of a Watt.

Si.

:moose:



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 Posted: Thu Nov 19th, 2015 09:29 am
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NathanO
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The one with the DCC decoder in it is 'reading' that is receiving DC and them passing it on to the motor after going through the decoder, so there is a voltage drop from the DC voltage on the track.

If you plan to use only DC, remove the DCC decoder. The Bachmann instructions with the unit should show you what you need to do.

Nathan

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 Posted: Thu Nov 19th, 2015 05:37 pm
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George W
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Thanks Nathan, I'll have to look it up online as the exploded view sheet isn't very helpful. I can't even tell where the board is from it 🙁. As all power goes through it, I'll assume it's not as easy as unplugging it.



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 Posted: Thu Nov 19th, 2015 05:40 pm
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George W
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Thanks for the tip, Si.

I'll be sure to look for something with a high rating. Any suggestions on how many Watts I should look to deal with?



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 Posted: Thu Nov 19th, 2015 09:19 pm
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NathanO
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If you are running On30 / HO and are using mostly Bachmann motive power your needs for power are small. A good MRC or equal power pack will work.

Can you post a simple drawing of the layout you are planning? We can then give you some better ideas.

Nathan

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 Posted: Thu Nov 19th, 2015 09:45 pm
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George W
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I'll do that with some notes on how I'm trying to get it to operate as its not what I'd call a standard setup.



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George W.
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 Posted: Thu Nov 19th, 2015 10:40 pm
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George W
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See if this diagram makes sense.

HO Only track runs a cheap Model Power Engine which currently goes 90 mph while the two 0n30 Bachcmann Porters slowly chug along (the DCC in particular is slow) if I power all three tracks with the single power supply.

So this is how I THINK it needs to be wired to solve the issue.

Problem being, what parts to use to make three simple speed controllers, one for each track. Or is there a cheap solution on the market.

Last edited on Thu Nov 19th, 2015 11:00 pm by George W



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 Posted: Thu Nov 19th, 2015 10:40 pm
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George W
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Seems I can't upload even a simple drawing. Can't imagine it's over 3000 bytes, but guess it is. Never used to have this problem 🙁

PHOTOBUCKET TO THE RESCUE.

Last edited on Thu Nov 19th, 2015 11:34 pm by George W



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 Posted: Thu Nov 19th, 2015 11:31 pm
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George W
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DIAGRAM (I hope)
[img][/img]

The Power Supply in notes is what I have. Funding for this is minimal at this point as its largely spent on rest of project (mostly finished)

Last edited on Thu Nov 19th, 2015 11:33 pm by George W



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