DrWho 12?
These should be the two drawings for your engine:

http://www.bachmanntrains.com/home-usa/dwg/dwgs/LS4-4-0DCWIRING.pdf

http://www.bachmanntrains.com/home-usa/dwg/dwgs/LS4-4-0DCCWIRING.pdf

You can compare the DC and DCC drawings to see what you would have to do.
I don't think they made DCC ready locos back then, but everything seems to be
easy enough to get to and rewire.
Tom

To?
I would try and find someone to 3D print a few for you.
Tom

Try searching Amazon for rulers.
https://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Daps&field-keywords=scale+rulers
You can also pick a scale to search for.
https://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Daps&field-keywords=1%3A20+scale+rulers&rh=i%3Aaps%2Ck%3A1%3A20+scale+rulers
Tom

There is a K27 on ebay right now.
Tom

Quote from: Loco Bill Canelos on March 20, 2017, 06:27:54 PM
N.H.&I.railfan,

Rather than mess with the old out of dat chassis and gears on th loco you have why not consider getting a new chassis with the Version 5 chassis.  The chassis are on sale now $45 and the version  5 is extremely reliable compared to what you have. 

Since you did not say what loco you have I cannot make specific recommendations except to say this one will fit any Big Hauler 4-6-0 except for the paint colors.

http://estore.bachmanntrains.com/index.php?main_page=product_info&cPath=66_69_671_669&products_id=5863

Also see my commentary on repairs to the 4-6-0:

http://estore.bachmanntrains.com/index.php?main_page=product_info&cPath=66_69_671_669&products_id=5863

Have fun,

Loco Bill

Bill
Both of these links are the same. They both point to the same chassis.
Tom

Bill
I tried all  and they all work.
Thank you!
Tom

Bill
The second link for part 4 works fine.
The second link for part 3 is the same as the second link for part 4. I get part 4 if I try the second link for part 3.
Neither of the first links work.
Tom

Bill
They still don't work for me.
I get a message saying the folder does not exist.
It doesn't time out. I get the message right away.
Tom

mudhen
I had one engine that would not link no matter what I did.
It turned out to be a bad push button switch.
I replaced the switch and it linked fine.
Tom

Mel
All the drawings for the Forney are on the Bachmann site.
http://www.bachmanntrains.com/home-usa/references.php
They show all the screws for the cab.
Tom

This has been discussed several times before.
See the following discussion:
http://www.bachmanntrains.com/home-usa/board/index.php/topic,27957.0.html
I have used Super Clean with great success.
Tom

Quote from: tscdata on June 23, 2015, 12:28:48 PM
Rich,

Thanks for the heads up on suppliers and the possibility of a short in the DCC socket.

John

John
I posted this reply once before.
There has been a problem with the HO DoodleBug since day one. I don't know what scale an #81406 is. The NMRA 8-pin socket is mis-wired.
There is a pcb trace between pins 3 & 7. Instructions that came with the DoodleBug said there is a green wire between the pins. That is not true.
Pins 3 & 7 should not be connected together with a wire or a pcb trace. Remove whichever is present. This mistake could only cause trouble if
your decoder has a function wire connected to pin 3 and it gets energized.
Tom

Try http://www.microfasteners.com and search for brass.
They have quite a few.
Tom

There has been a problem with the HO DoodleBug since day one. I don't kbow what scale an #81406 is. The NMRA 8-pin socket is mis-wired.
There is a pcb trace between pins 3 & 7. Instructions that came with the DoodleBug said there i s a green wire between the pins. That is not true.
Pins 3 & 7 should not be connected together with a wire or a pcb trace. Remove whichever is present. This mistake could only cause trouble if
your decoder has a function wire connected to pin 3 and it gets energized.
Tom

See the following discussion:
http://www.bachmanntrains.com/home-usa/board/index.php/topic,27957.0.html
I have used Super Clean with great success.
Tom