Date   
Re: Atlas signal - Tortoise Interlocking

wirefordcc
 

If there is a resistor between the Tortoise and signal, that may be because the Tortoise may being used to drive an LED directly.  That isn't an issue with the Atlas SCB.

Re: Atlas signal - Tortoise Interlocking

Bill Wilken
 

Alan,

Many thanks.  Actually, I do want the switch machine to provide input ... exactly as you suggest.

On a number of schematics I've seen showing Tortoises connected to signals, the schematic shows a resistor between the signal and Tortoise.  But given that the Atlas signal control board can handle up to 12 volts, I'm guessing that shouldn't be an issue.

I'm all set on switch motor wiring.  Thank heaven for the availability of SMAILs.  The small added charge for the DCC control chip on the switch motor is worth every penny.  

On Wed, 2020-08-05 at 11:29 -0700, wirefordcc wrote:
Hi Bill,

I reviewed the Atlas schematic you supplied and also went the Atlas website to learn a little bit about the Atlas Signal Control Board (SCB).  I found that it does not control the Atlas switch machine or Tortoise as you desire.  Rather, the Atlas switch machine or a Tortoise provides input to it.

The blue wire you see on the Atlas schematic that goes to the common on the Atlas switch machine would be attached to terminal 4 on a Tortoise.  The two green wires shown going to the Atlas switch machine go to terminals 2 and 3 on the Tortoise.  If you get the wrong aspect displayed, swap the wires going to 2 and 3.

You can control the Tortoise with DCC via an accessory decoder like made by NCE or Digitrax or through any traditional means of controlling a Tortoise switch machine. For more on controlling Tortoise switch machines, visit my website at:  http://www.wiringfordcc.com/sw_ctl.htm

Allan Gartner
Wiring for DCC

Re: Atlas signal - Tortoise Interlocking

wirefordcc
 

Hi Brian,

Loading them into the photos and files section is easy, too, and doesn’t spread viruses to the computers of group members.  The administrators of this forum talk about it every so often and we still don’t want anyone’s computer to be adversely affected.

 

Allan

 

From: w4dccqa@groups.io <w4dccqa@groups.io> On Behalf Of Brian Lewis
Sent: Wednesday, August 05, 2020 11:59 AM
To: w4dccqa@groups.io
Subject: Re: [w4dccqa] Atlas signal - Tortoise Interlocking

 

May I enquire why not please?  Surely attachments are the quickest and easiest way to demonstrate you problems/solutions.

On 05/08/2020 13:45, wirefordcc wrote:

Hi Bill,

This group does not handle attachments. 

Allan Gartner
Wiring for DCC

--

Regards and thanks

 

Brian Lewis

Re: Atlas signal - Tortoise Interlocking

wirefordcc
 

Hi Bill,

I reviewed the Atlas schematic you supplied and also went the Atlas website to learn a little bit about the Atlas Signal Control Board (SCB).  I found that it does not control the Atlas switch machine or Tortoise as you desire.  Rather, the Atlas switch machine or a Tortoise provides input to it.

The blue wire you see on the Atlas schematic that goes to the common on the Atlas switch machine would be attached to terminal 4 on a Tortoise.  The two green wires shown going to the Atlas switch machine go to terminals 2 and 3 on the Tortoise.  If you get the wrong aspect displayed, swap the wires going to 2 and 3.

You can control the Tortoise with DCC via an accessory decoder like made by NCE or Digitrax or through any traditional means of controlling a Tortoise switch machine. For more on controlling Tortoise switch machines, visit my website at:  http://www.wiringfordcc.com/sw_ctl.htm

Allan Gartner
Wiring for DCC

Re: Atlas signal - Tortoise Interlocking

Brian Lewis
 

May I enquire why not please?  Surely attachments are the quickest and easiest way to demonstrate you problems/solutions.

On 05/08/2020 13:45, wirefordcc wrote:
Hi Bill,

This group does not handle attachments. 

Allan Gartner
Wiring for DCC
--

Regards and thanks

 

Brian Lewis

File /DoubleTargetInterlocking.pdf uploaded #file-notice

w4dccqa@groups.io Notification <w4dccqa@...>
 

The following files have been uploaded to the Files area of the w4dccqa@groups.io group.

By: Bill Wilken

Description:
Wiring diagram showing interlocking created with Atlas double target signal, Atlas signal control boards, and Atlas switch machine.

Re: Atlas signal - Tortoise Interlocking

wirefordcc
 

It's right under Photos on the left menu when you are in the group.

Re: Converting from DC to DCC with selectable power

wirefordcc
 

The warning about not using common rail refers to those using multiple boosters and auto reversers.  Do you have any reversing sections?  Are you using multiple boosters?  If the answer is no to either of these, you are okay.

Allan Gartner
Wiring for DCC

Re: Atlas signal - Tortoise Interlocking

Carl
 

Hello Allan:

The Toy Train group has switched to allowing attachments. It is really nice to have a picture in the email and not have to search for it. They still have the photo and file sections. It doesn't seem to have caused any problems.

Just a thought.

Thanks, Carl.

On 8/5/2020 8:54 AM, Bill Wilken wrote:
Thanks.  I'll be happy to do so, but what is the URL for the "Files Section?"  I can't find any such entry  in the website's Site Map/Index.

On Wed, 2020-08-05 at 05:45 -0700, wirefordcc wrote:
Hi Bill,

This group does not handle attachments.  Instead, you need to upload the to the Photos or Files sections.  Just name your attachments and tell us where you put them.

Thank you!

Allan Gartner
Wiring for DCC

Re: Atlas signal - Tortoise Interlocking

Bill Wilken
 

Thanks.  I'll be happy to do so, but what is the URL for the "Files Section?"  I can't find any such entry  in the website's Site Map/Index.

On Wed, 2020-08-05 at 05:45 -0700, wirefordcc wrote:
Hi Bill,

This group does not handle attachments.  Instead, you need to upload the to the Photos or Files sections.  Just name your attachments and tell us where you put them.

Thank you!

Allan Gartner
Wiring for DCC

Re: Atlas signal - Tortoise Interlocking

wirefordcc
 

Hi Bill,

This group does not handle attachments.  Instead, you need to upload the to the Photos or Files sections.  Just name your attachments and tell us where you put them.

Thank you!

Allan Gartner
Wiring for DCC

Atlas signal - Tortoise Interlocking

Bill Wilken
 

Atlas has published an excellent wiring diagram (see attached) showing
how to create an interlocking connection between its two-headed signal
and an Atlas switch motor. I want to substitute a Tortoise switch
motor for the Atlas switch motor, but do not want to proceed until I
have a clear understanding of how to wire the Tortoise to the Atlas
control boards. Among other things, I suspect that in-line resistors
may be required, but have not idea of what type.

Re: Converting from DC to DCC with selectable power

Greg Harter
 

Our club (Columbus Area Railroad Club) in Indiana, operates a large HO layout with both DC and DCC.  We have several mainlines, with crossovers, and each mainline can separately run either DC or DCC.  If two mainlines with a crossover are operating on the same power source, the crossovers with work.  If one mainline is on DC and the other on DCC, the crossovers will not operate.  

If both mainlines are on the same power source, and the crossover is activated, and then one of the mainlines is switched to the other power source, the crossover (automatically) reverses back to mainline operation only.  We presented a clinic on this at the Indy Convention a couple of years ago.  We have never had a problem with this operation.

Greg Harter
Columbus Area Railroad Club

Re: Converting from DC to DCC with selectable power

Richard Sutcliffe
 

As long as you have only one system active at a time you will be fine.
That means the whole layout has DCC selected, or the whole layout is connected to DC.
Make sure the Master Switch is a DPDT Center Off, or is a “break before make” type.
Then the common rail is OK.

On Aug 4, 2020, at 6:41 PM, taylor102195@... wrote:

Am "converting" DC to DCC with selectable power using a DPDT to switch between DC or DCC on a small 4'x8' table layout.  The guides i have read say do not use typical DC common rail wiring with DCC.  If i am isolating the DC from DCC source do i need to do anything special with the existing common rail wire given the small size of the layout?


Converting from DC to DCC with selectable power

taylor102195@...
 

Am "converting" DC to DCC with selectable power using a DPDT to switch between DC or DCC on a small 4'x8' table layout.  The guides i have read say do not use typical DC common rail wiring with DCC.  If i am isolating the DC from DCC source do i need to do anything special with the existing common rail wire given the small size of the layout?

Re: Kato 90 degree crossing track

emrldsky
 

My experience with HO Kato and its 90 degree crossings says that just power the track as "usual" and there will be no problem - using unijoiners as designed.


Peace,

Mike G.


On 8/2/2020 6:05 PM, Kiran Kaja wrote:
Hi All,

I am exploring the possibility of having a branch line cross my double track mainline at a couple of spots on the layout. I have to use the Kato N Scale 90 degree crossing track pieces connected to each other for this. The branch line is single track. Here is a picture of what I am exploring.

https://drive.google.com/file/d/1sms65rxI1sFjED4EwAkFFwM_rPNF3KaI/view?usp=sharing

I can feed power from all 6 directions but I think I will need to add feeders to the unijoiners that join the 2 actual crossing track pieces. Am I correct? Without this, I am guessing that the train on the branch line won't have power where the 2 crossing track pieces join.

Thanks for any suggestions.

Regards,
Kiran


--
Kiran kaja
Blind amateur Modeler in Northern California
N scale Unitrack | NCE | JMRI
Passenger trains only

Kato 90 degree crossing track

Kiran Kaja
 

Hi All,

I am exploring the possibility of having a branch line cross my double track mainline at a couple of spots on the layout. I have to use the Kato N Scale 90 degree crossing track pieces connected to each other for this. The branch line is single track. Here is a picture of what I am exploring.

https://drive.google.com/file/d/1sms65rxI1sFjED4EwAkFFwM_rPNF3KaI/view?usp=sharing

I can feed power from all 6 directions but I think I will need to add feeders to the unijoiners that join the 2 actual crossing track pieces. Am I correct? Without this, I am guessing that the train on the branch line won't have power where the 2 crossing track pieces join.

Thanks for any suggestions.

Regards,
Kiran


--
Kiran kaja
Blind amateur Modeler in Northern California
N scale Unitrack | NCE | JMRI
Passenger trains only

Re: Converting older steam loco to dcc a scale

Gary Chudzinski
 

The Soundtraxx Tsunami2 and Eco's (if you can still find them), 2 Amp decoders are perfect for S gauge!  Of course, earlier Am. Flyer loco motors need to be converted to low Amp DC motors.  

Gary Chudzinski

Re: Converting older steam loco to dcc a scale

wirefordcc
 

Hi Rob,

I don't know that there are any decoders specifically made for S scale.  I did a quick check for you on the Soundtraxx website.  Here is a link for you and their recommendations:

https://soundtraxx.com/reference/decoder-selector

I highly recommend going with a decoder that has sound capability.  Sound brings model trains to life.  Also check out TCS's WOW! sound decoders and ESU's LokSound.  These are all popular with modelers.

You can't wrong using a decoder for O-scale.  If your motors are high efficiency, you might be able to use HO scale decoders.  The main thing is that their stall current doesn't exceed the capability of the decoder.   Put your loco on a test track using "old-fashioned" DC and briefly hold the loco so the wheels don't turn.  Measure the current it draws.  If this is within the current limit of the decoder, you can use a smaller HO locomotive.

Allan Gartner
Wiring for DCC

Converting older steam loco to dcc a scale

robf06
 

I have a couple of older s scale locomotives that have new can motors installed and was thinking about updating to dcc. Question is decoder selection. Is there a preferred way to go in s scale? This will be my first dcc layout. Thanks for the help.

Rob Fuhst
Grand Haven,  MI