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Transition roadbed from mainline to industrial siding or yard?

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  • Member since
    January 2014
  • 194 posts
Transition roadbed from mainline to industrial siding or yard?
Posted by ChrisVA on Saturday, March 6, 2021 10:22 AM

If I use cork roadbed for my mainline, and a sheet of cork or homasote for my industrial sidings and yards, what is the best way to make that transition? 

Thanks!

 

  • Member since
    July 2006
  • 118 posts
Posted by Texas Zephyr on Saturday, March 6, 2021 10:32 AM

ChrisVA
If I use cork roadbed for my mainline, and a sheet of cork or homasote for my industrial sidings and yards, what is the best way to make that transition?

butt them up against each other and use a sander to slope them making the heights match.   Both of those materials are very easy to sand.

Wear a dust mask.  And I  usually have the shopvac running (connected to the sander, or intake as close to the work as practical) to trap as much of the dust as possible.

  • Member since
    January 2017
  • From: Southern Florida Gulf Coast
  • 18,255 posts
Posted by SeeYou190 on Saturday, March 6, 2021 10:39 AM

For non-graded areas like yards and industrial track, I raise the subroadbed to keep the rail heights level.

I do not like any grades, except to change elevation for over/under operation.

All my HO layouts have had dead-level track, and it works well for me. I change the scenery height rather than the rail height.

-Kevin

Living the dream.

  • Member since
    July 2006
  • From: 4610 Metre's North of the Fortyninth on the left coast of Canada
  • 9,229 posts
Posted by BATMAN on Saturday, March 6, 2021 10:53 AM

What are you using for sub roadbed?

 

Brent

"All of the world's problems are the result of the difference between how we think and how the world works."

  • Member since
    January 2004
  • From: Canada, eh?
  • 13,375 posts
Posted by doctorwayne on Saturday, March 6, 2021 11:14 AM

ChrisVA

If I use cork roadbed for my mainline, and a sheet of cork or homasote for my industrial sidings and yards, what is the best way to make that transition? 

Thanks!   

The track in the foreground, with grey ballast, is on cork roadbed, while the track with the boxcar, in the distance at right, is directly atop the plywood...

I used a piece of #36 garnet sandpaper, wrapped around a block of 2"x2" to sand-down the grade from the turnout on the mainline to the turnout near the boxcar.  Took less than two minutes-or-so.

Here's another view of the same area...

The grade between the two turnouts is about 16" long.

Wayne

  • Member since
    January 2014
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Posted by ChrisVA on Saturday, March 6, 2021 12:26 PM

BATMAN

What are you using for sub roadbed?

 

 

 

 

1/2" plywood

  • Member since
    November 2002
  • From: US
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Posted by wp8thsub on Saturday, March 6, 2021 4:08 PM

Belt sander for the win.

Rob Spangler

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    June 2007
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Posted by riogrande5761 on Monday, March 8, 2021 9:28 AM

I've found it easiest to mount the surface of the cork roadbed flush with the Homasote.  That way there is no "ramp" to get them to match.

Bottom of this photo illustrates:

Did the same thing on previous layout - it just seemed like common sense:

Rio Grande.  The Action Road  - Focus 1977-1983

  • Member since
    August 2006
  • From: Nashville, TN area
  • 707 posts
Posted by hardcoalcase on Tuesday, March 16, 2021 8:29 PM

I plan for about 8" of cork to be shaped for the transition to 1/8" cork sheet for a regular spur, and about 18" for the ladder track of a yard.  I use a Stanley Surform rasp, which makes pretty quick work of it.  I do have a belt sander, but the rasp allows for better control.    

At the risk of sounding overly furgal Embarrassed ... I collect the cork roadbed dust for possible use as scenic material.

...and, yes... I have a lot of it.  Whistling

Jim

  • Member since
    February 2001
  • From: Wyoming, where men are men, and sheep are nervous!
  • 3,384 posts
Posted by Pruitt on Tuesday, March 16, 2021 9:54 PM

I use Midwest HO cork roadbed for my mainline (roughly 3/16" thick) and mostly 4mm cork sheet for sidings and other auxiliary trackage. That gives a prototype look to the track elevations.

For the transition, I layer 1/4" masking tape to create a gentle slope with vertical curves at each end to ease into the ramp. Here's a ramp in process of being built right under the passing siding turnout.

  • Member since
    March 2020
  • 86 posts
Posted by FlattenedQuarter on Thursday, March 18, 2021 8:17 AM

I ran my mainlines on cork on top of homasote. My yards and branches are directly on the homasote, I transitioned between the two with a cedar shingle trimmed to match the cork profile

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