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LED Light testing How-to & Homemade testers
Posted by desertdrover On 03/19/2018 At 3:45:11 PM
There are many questions from Forum members on how do I test an LED. Here are four (4) How-to ways to accomplish this task. Depending on your needs or skills these are some pretty simple ways to get the job done. Starting 1: with a Digital Multimeter, 2: using 9 Volt battery with 1K Ohm resistor in-line homemade tester, 3: using two (2) double ďAĒ batteries, or 4: a nifty little gadget from Ngineering using a Nine (9) volt battery with a circuit board with installed resistors for testing LEDís.
Starting with the use of a Digital Multimeter, connect the Black test lead to the COM jack and the Red test lead to the Note that the polarity of the Red test lead is ď+Ē).
Set the meter Function switch to the range (see picture below) and connect the test leads across the diode/LED. If the LED does not light, switch your red and black leads on the LED. When the LED lights whatever black lead clip is on your LED leads will be your (-) Neg. Cathode lead and that is where your resistor will be placed when installing into your Locomotive, Rail Critter, Structures or any LED lighting situation.

Second method using a homemade 9 Volt battery with 1K Ohm resistor in-line homemade tester. Get a set of red and black wires on a 9 volt battery snap on clip, and place an LED holder, or red and black alligator clips, on the other end of the red and black wires. Place a 1K Ohm resistor in-line on the black wire. To test an LED, place the LED into the LED holder, or use your alligator clips, and again if it lights, note what lead the black wire goes to on the LED leads, and that is your (-) Neg. Cathode lead and where your resistor is attached.

Third method using a double ďAĒ battery case with two (2) double ďA batteries homemade tester. Attach a set of red and black alligator clips to the battery case red and black wires. (No resistor needed for this tester) Connect your LED to the tester clips and again, if it lights, note what lead the black wire goes to on the LED leads, and that is your (-) Neg. Cathode lead and where your resistor is attached for when you install it into your locomotive decoders White (Forward) or Yellow (Reverse) light leads.

The last LED tester is a device made by Ngineering, Part #N8021, for testing LEDís, nothing more than the same as your homemade second tester using a nine (9) volt battery and resistor. This device already has a resistor installed into a circuit board with nice convenient attachment clips for your LED leads. And same as all the other testers, the black lead shows your (-) Neg. Cathode lead and where your resistor gets attached prior to installation.

Also posed into the DCC, Computers and Electronics for Model Railroads
"Natural" Porch Posts
Posted by TC On 03/17/2018 At 11:14:13 PM
I'm looking for some creative ideas on how to model (in 1:87 scale) porch posts similar to the ones in this photo by Dorothea Lange (found at this Wiki link) taken by her in Gordonton, North Carolina. Anyone have thoughts on how to approach it?

Another Photo Run-By at the F&SM RR
Posted by halrey On 03/17/2018 At 6:36:57 PM
Well, I made another photo run-by at the F&SM RR two days ago. George has replaced some of the older buildings that had been built in a rush with some new structures. The restaurant with the pawn shop are a Downtown Deco kit, while the other 2 are scratch built. The fish company bldg. covers a turnout motor.
Always new improvements every time I stop by, got to love it!


Grandt Line Closing
Posted by GregW66 On 03/14/2018 At 12:55:38 PM
I got a tip on Facebook that Grandt Line is closing. Hoping to get the word out so someone might pick their line up.
Larena's Railroad Hotel
Posted by Adamantish On 03/12/2018 At 10:15:15 AM
Hi everyone. I intend to build this kit as my first craftsman kit. It doesn't look too complicated from a construction standpoint. I went to a local train show this past weekend looking for some kits under $20 and picked up this Muir Models kit. I have no idea how old it is. 1980? 1970? I did a quick box check before I bought it and all of the major wall pieces were still in a sealed bag. Somehow, I neglected to notice the instructions are missing. Oops. I don't suppose anyone has this kit in their collection, or maybe you've built it, and could share some photos of the instructions or completed kit? I think I can build it with or without the instruction but I'm sure they'd be helpful.

One of the reasons I think it's buildable without the instructions, all the walls, windows and door openings are pre-scribed. The biggest challenge will be figuring out where the small bundle of strip wood goes. I got all of the walls cut out yesterday.

I'm thinking about mocking up a dormer on the front left, and maybe 2 on the back. If this is a hotel it seems like it should have more usable space on the second floor.

I'll post more photos as I move it along.

Photos of my favorite builds
Posted by Graffen On 03/09/2018 At 2:44:33 PM
Some of my favorite builds in HO/HOn3.

Coach in HOn3

Combine in HOn3

Caboose in HOn3

Boxcar HOn3

Paper model scratchbuilt.

Miller & sons diorama.

Station close up.


20 t Shay in HO

Bi-level station

Gas station

Leadville building in HO

Modified Lindbergh tug in HO

Weathered brass C-19 in HOn3

FSM engine house for HOn3

Scratchbuilt paper model in HO

Roundhouse for HOn3

Sierra Hotel in HO

Detailed and weathered Swedish Sb locomotive in HO. (Tenshodo)

Drugstore in HO

Store in HO

Auhagen building

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 Posted By: Ed Gebhardt Jr 
I stumbled across this website and thought I should leave a comment about my Dad who was a man that lived railroad and dedicated his knowledge to anyone interested in model railroading. Ever since I was a baby, we went on every vacation involved with Steam and rode in many cabs around the US. I have many great memories of my Dad living his Rail Life.

If anyone involved in the model railroad life ever met my Dad, they would never forget him.

Ed Gebhardt Jr.
Signed: 2/4/2014 9:50:23 AM
 Posted By: george courage 
NEW TO MODEL RAILROADING AND WAS TRYING TO MODEL THE B&M Eastern line in Everett,MA.during the 1940s&50s,I use to live up the street from the rail road station just in back of paris st.!I was wondering if anyone had old photos of the area during that time as the city of Everett,ma. has few?thank you! George
Signed: 1/29/2014 1:25:33 PM
 Posted By: Phil Blakely 
Looks like you have an interesting and enjoyable forum, tried to sign up, something got goobered up somewhere.
Signed: 1/29/2014 2:55:22 AM
 Posted By: Jeff 
Hi All, I have registered on the website but have forgotten my Username. If I try to re-register it says my email address is in uses. I need help so I can post to the website some questions I have. I need a forgot username link. What should I do because this the only way I can find to contact some one on the site. Thank You, Jeff
Signed: 12/29/2013 12:43:46 PM
 Posted By: sam tarallo 
i like railroads,my grandfather was either a fireman or brakeman on the raritan fiver railroad in 1960s to 1979,i am trying to get past imformation on him and about his work experiencs with this company.my only memory wnen i was a little boy the raritan river railroad would come by stevens ave i8n south amboy,when it came by the overpass by feltus street,my grand father blew the train horn and my older brother joe use to get pickit up there and be bought back to the train yard on stevens ave,up on top of hill was the raritan diner.i still have vivid memories which i think were good memorys i will never forget.
Signed: 11/20/2013 12:06:25 AM
 Posted By: gary cosby 
Signed: 10/18/2013 11:25:26 PM
 Posted By: Ed Cox 
Hi Where can I buy a turntable kit On30 ?
Signed: 8/13/2013 12:27:54 AM
 Posted By: Peter Wehrhahn 
Hallo from Germany,

I invite you all to visit my Modellcom-Blog. Many different things to look at: logging, mining, cardmodeling for the model railroader, regular card modeling, many hints and links to other interesting sites. A special feature of the site are regular hints to free downloadable card models or free books on trains. Site is only in german, but you can use the prominently placed Google translation tool.See it here:


Signed: 7/19/2013 3:05:51 PM
 Posted By: N scaler 
If you are interested in n scale model railroading in Germany, here are some informations:
I just launched this site newly, but updates and more info will follow.
Best Regards!
Signed: 5/13/2013 3:36:02 AM
 Posted By: Stevie Talbert 
Interesting website. Would like to join in........when I have time from scratch building.
Signed: 5/10/2013 2:56:35 AM
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