Author Topic: BOXCABS!  (Read 2688 times)

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nkalanaga

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Re: Long Island boxcabs.
« Reply #15 on: November 21, 2021, 02:47:48 PM »
0
A widened Z scale mechanism?  It looks close to the D&RGW's larger narrow gauge 2-8-2s
N Kalanaga
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pjm20

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Re: Long Island boxcabs.
« Reply #16 on: November 21, 2021, 02:57:08 PM »
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From my notes, the D51s still are too big for a 44" dia driver. A stretched Roundhouse 2-8-0 might be your best bet. A .275" dia driver is what we are looking for.
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Lemosteam

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Re: Long Island boxcabs.
« Reply #17 on: November 21, 2021, 04:49:35 PM »
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In this topic: https://www.therailwire.net/forum/index.php?topic=53010.0

The "DKS" flattened a pretty well detailed photo of a Long Island boxcab. I took that photo and "traced" it in AutoCAD to import into Sketchup. Apparently I have no idea how to use Sketchup, but I did spit out a 3D model of this loco.



This site has some good photos:
https://www.arrts-arrchives.com/ENG403.html

And this site:
http://members.trainweb.com/bedt/indloco/prrn4.html
These were my first test prints.



In N scale this thing is only about 1.5" long.

Shut up and take my money-

Have you determined a mech yet?  MUST. HAVE.

Chris333

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Re: Long Island boxcabs.
« Reply #18 on: November 21, 2021, 06:20:03 PM »
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Shut up and take my money-

Have you determined a mech yet?  MUST. HAVE.

Determination is on the printer right now  :D

The thing about the power chassis though. I have a couple of these sitting here: https://tomamw.miiduu.com/6151-nhoe009-dia60wb12mm-super-slow-drinve-unit-oso-power-0612-rtr-1

The 6mm wheels are correct, but the wheel base is too short. I need 18mm WB. So I am printing a new chassis block. After all the kit chassis itself is 3D printed. So I will strip all the parts from the Toma chassis and add a new longer 1mm layshaft. I'll have pics later on.

delamaize

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Re: Long Island boxcabs.
« Reply #19 on: November 21, 2021, 09:25:22 PM »
+2
@Chris333 how do you feel about Alco 2-8-2T Minarets?   :D
If I could identify a chassis with small enough driver diameter and an integrated drive (no tender, because there wasn’t one) that would be my unicorn.

I built one years ago, using a Walthers 0-8-0 as the mech. It's way too big obviously, But it does fit the bill. I'm looking for some pictures now. If I don't find any, I will get some the next time I dig it out.

EDIT: Found a few picture, The pictures are horrible, I think I took them with a potato. The model is not great either, Of course the model was built like 10 or 12 years ago, so my skills were not exactly where they are now:

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« Last Edit: November 21, 2021, 09:45:28 PM by delamaize »
Mike

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Chris333

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Re: Long Island boxcabs.
« Reply #20 on: November 22, 2021, 02:24:25 AM »
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How does that run without a tender for power pickups?

Chris333

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Re: Long Island boxcabs.
« Reply #21 on: November 22, 2021, 02:27:29 AM »
+9
The boxcab next to a 33' hopper:


Frame block with chassis mounted.



Chassis on the left is stock Toma Model Works. On the right is my own 3D "block" with Toma's parts on it.


And here is a video of the Toma chassis running:


Lemosteam

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Re: Long Island boxcabs.
« Reply #22 on: November 22, 2021, 05:51:25 AM »
+1
Amazeballs.

You astound me Chris. Seriously.

Chris333

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Re: Long Island boxcabs.
« Reply #23 on: November 22, 2021, 05:59:07 AM »
+6
Please excuse the HOn30 layout.  :)

/>
In the video there is no weight at all. The motor, layshaft, wheels, and screws are the only metal. I could have blown it over. I suspect that once full of lead it will run even better.

Needs moar 1930's George Sellios   :lol:

bbussey

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Re: Long Island boxcabs.
« Reply #24 on: November 22, 2021, 07:55:35 AM »
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OUTSTANDING.
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Mark5

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Re: Long Island boxcabs.
« Reply #25 on: November 22, 2021, 09:42:03 AM »
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The boxcab next to a 33' hopper:

Magnifico! 8)

Ed Kapuscinski

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Re: Long Island boxcabs.
« Reply #26 on: November 22, 2021, 10:13:57 AM »
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From my notes, the D51s still are too big for a 44" dia driver. A stretched Roundhouse 2-8-0 might be your best bet. A .275" dia driver is what we are looking for.

Only problem there: the MDC engines have their motors in the tender.

wazzou

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Re: Long Island boxcabs.
« Reply #27 on: November 22, 2021, 11:36:22 AM »
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Only problem there: the MDC engines have their motors in the tender.


Precisely.
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Lemosteam

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Re: Long Island boxcabs.
« Reply #28 on: November 22, 2021, 04:23:11 PM »
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Only problem there: the MDC engines have their motors in the tender.

But this does not mean that a gear can't be added to the input shaft and a motor above that inside the shell of the tank engine after machining off the top of the chassis for room.

up1950s

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Re: Long Island boxcabs.
« Reply #29 on: November 22, 2021, 07:35:13 PM »
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Chris needs to be cloned and become required R&D enforcer of every model RR manufacturer of every scale and some not yet envisioned .  Critters are much more appropriate to model railroads , less disappointing with tractive effort  , and as such make small model railroads more prototypical .