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Steve P
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Hi,

This is the track planning portion of my project previously described in:

http://www.freerails.com/view_topic.php?id=8145&forum_id=45

Steve P

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Steve P
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This is the xtrkcad image.

The turnaround is on the left, the passenger station in the center of the turnaround.
The lower left is for loco and passenger car storage.
The freight yard is the area in the lower center/left.
The timbers on the right are the 1st 16' of a 96' 'trestle' that extends across a septic field to an orchard. 
The mainline, arrival/departure and drill track extend across it.
The grade will be kept at 0% across its length. The climb will start in the orchard.

Steve P


Attachment: passA7-2048.png (Downloaded 214 times)

Steve P
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Hi,

Here is a turbo CAD image of the previously mentioned trestle.
The portion of the trestle shown on the xtrkcad image is on the lower right.
It will support the main line, arrival/departure and drill tracks (left to right).
There will be several pairs of turnout switches between each to allow the switcher to cut out & assemble cars.

Steve P


Attachment: Capture3.PNG (Downloaded 206 times)

Steve P
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Hi,

Here's the xtrkcad image of the trestle. 
The starting platform shown two images back is repeated on the left. 
Note that it is over 96' of track. :)

The top rail is the mainline, the middle the arrival & departure track, and the bottom the drill track. 
The a/d track is designed to hold one long consist of approx. 45 cars, or 2 shorter trains.

Steve P


Attachment: trestle7.png (Downloaded 158 times)

Steve P
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Hi,

An image of the test layout of the freight yard/warehouse area.  Two team tracks
and a dummy warehouse, 3 1941 Chevy flatbeds.

Steve P

Attachment: IMG_0337-960.JPG (Downloaded 155 times)

Steve P
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Hi,

I'm going to start gluing down track today, finally dry enough outside.

Questions:

I'm planning on using some quality caulk under the ties, is this going to work?

I have realized a new plan is necessary to handle my steep grades.  I used a transit
to determine the actual grade from end to end, and its 6.25% :sad:

To handle this I now plan on using a pair of horseshoes to fold the path back then forward again to slightly more than double the amount of track.  I can get it to 2.78% by doing this.

When I build the actual horseshoe should I keep it at 0% grade to compensate for the additional effort needed to pull cars thru the curve?
Or should I attempt to make it around 2.5% grade?

I plan on using (LGB) R5 track, 15' diameter.
Should I bank the curve, and if so, how much?

Steve P

Last edited on Wed Jul 18th, 2018 01:36 pm by Steve P

Helmut
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I doubt that any caulk will withstand the UV irradiation outside.
Years ago, I tried asphalt to glue down the ties - it was well covered with ballast but finally gave in.
So the tracks were heaved up.
Then I just put dowels in the concrete breeze forming the trough where the ballasted tracks ran in,
and fastened the ties with unobtrusive brass straps and stainless screws.
It was sufficient to have them roughly 1' apart.
Trouble ended immediately until the final trouble of being forced to dismantle the layout showed up.
No remedy for that of course.
The horseshoe curves' grade should be half of your ruling grade to compensate for friction.
Banking is definitely contraproductive in your case.
Just my 2 cts.


Steve P
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Helmut,

I am using a lifetime exterior grade caulk.  I want it to be semi removable if necessary
till I'm sure of the layout.  If sections lift I can try something else under that section.

Out of curiosity, why not some banking in the turns?

I've been told that to change grades, I should gradually change over a 6' length.
I assume I would use  "bendable" track, but how do you bend that small an arc?
I calculated that a 3% grade over 6' would be roughly a 100' radius.

Steve P

Last edited on Thu Jul 19th, 2018 03:28 pm by Steve P

Helmut
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@Steve P
In RR engineering terms, a banked curved track's outer rail is above the inner rail in order to compensate for centrifugal forces.
This is not needed in model railroading,
as it increases the risk of your cars being turned over to the inner side of the curve when pulling a long drag.
Vertical transition curve radius for grade changes, should be some 5..6 times your longest loco's wheelbase.
When using code 332 rail, bending it vertically is indeed a challenge when using ready-made track sections.
In that case I'd rather use relatively short sections, join and place them on a properly shaped bed to achieve the transition.


Steve P
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Hi,

It has occurred to me that I should be placing some sort of expansion gaps in the long lines of track,
to keep summer heat & winter cold from buckling the track. 
Is there a rule of thumb for this?

Steve P
 

Steve P
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Hi,

Bigboy arriving next Wednesday, depot almost ready:

Steve P

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Steve P
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Hi,

Bridge to the orchard (with mainline, a/d tracks & drill track) is started:

Steve P

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Steve P
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Hi,

Phase I of the track is complete. 

First pic is the far end of bridge, which will have a turnaround added as part of phase II.

Second pic is the bridge as seen from  upper deck of house.

Third pic is the view of the bridge from the freight yard.

Note that only the main line is complete.  The A/D track, drill track and freight yard feather are unfinished. 
That's another $2500 worth of switches and track, maybe next year...

The turn around will start next week. 
I hope to finish that, as well as a couple of tunnels thru that fence for the main line and the turn around before winter sets in.

Steve P













slateworks
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Crikey!
That's one heck of a trestle!



Steve P
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Hi,

I had a difficult design problem. 
The main depot area had to be incorporated into the patio area, the only real outdoor area that made sense. 
But I live on the side of a mountain, so that meant no easy way to run track from that point.
 
The bridge/trestle not only gets me to the point where I can run the main line up thru my valley,
but is a usable place to put a pair of reasonable length arrival/departure tracks,
as well as a drill track long enough to assemble a 60 boxcar consist for the Big Boy. 
There is not a level area on the entire property large enough to do that...

Steve P


Steve P
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Hi,

The turnaround is finished.


The mainline enters here. There will be a tunnel thru the fence..




It is about 6' off the ground at the high point.




The consist returns to the main line here. There will be a tunnel the length of the concrete block base.




Tunnels are next, followed by a "mountain" covering them.

Steve P


Si.
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" Bigboy arriving next Wednesday "



Hi Steve  :wave:



HEY ! ... That musta been a 'Red Letter Day' as they say !  :bg:



Don't know what to say, other than it's all lookin' AWESOME !  :shocked:

Great to see your photos of the whole setup & planning ... N I C E !  :cool:



What's on your 'Wish List' for the future ?  ???



:moose:



Si.


Steve P
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Si,

I am using turboCAD as we speak to design a concrete form for the 2 tunnels where the main/turnaround passes thru the inner yard fence.
Weather permitting I should be able to pour the 1st tunnel tomorrow, then the 2nd several days later
(re-using the form so have to wait 2-3 days before stripping).

After that I am going to build a "mountain" on top of them,
with a combination of tan breeze and granite rip-rap left over from a previous dig on the property.

Steve P.


Steve P
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Video of me   testing tunnel clearances

Steve P



slateworks
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Impressive Steve.
Looking forward to seeing a full train in view.



Steve P
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Doug,

I don't really have a full train yet. 
Got the 2 boxcars used for battery & control (deadrail).
A caboose, 4 UP passenger cars, plus a couple oddball things in the wrong scale.
 
Been spending all my money on track and building supplies. 
Hopefully this winter I will be able to expand my rolling stock collection...

Picture here:

http://www.freerails.com/view_topic.php?id=8145&forum_id=45&page=4


Si.
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Hi Steve  :wave:



:cool: :cool: K in'   T :cool: :cool:   C :cool: :cool: L   !



Would you like your Thread moved from the 'Track Planning' Forum ...  L:

... to the 'Large Scale' Forum ?  ???



I'm thinking more people might see it there, who are lookin' for the BIG stuff !  :shocked:

It has gone nicely, from a Track Plan to REALITY ! ... real quick !!  :)



:moose: :moose: :moose: :moose: :moose:




Si.


Steve P
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Si,


It was perhaps too quick, almost a bridge too far...


I am building an 8' retaining wall where I made a cut in backfill along the house to make room for the trestle.  
It was sliding severely so it had to be done, although it really had nothing to do with the trains per say.


I have realized I need to re-engineer track layout in the freight yard area.  
Not a lot of work pulling up the existing track, but I am stuck with 6-7 R3 switches.
Note: the MTH BigBoy is rated for R3 curves, and does work with them, but it cannot handle R3 switches.  
It tries to ride up the inside guard rail and proceeds to derail. 
So I have to replace them with R5 switches.

:bang:

Other than that it went better than expected. 

Got interested in G gauge last winter, started to build the control and battery boxcars in April, 
and am about to finish up the 1st phase of the setup in a few more weeks.  

About 7 mores days for the 2nd concrete tunnel to cure, then a few more days building a "mountain" over the two of them.


Steve P



Si.
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" ... it cannot handle R3 switches.  It tries to ride up the inside guard rail and proceeds to derail "



Hi Steve  :wave:



:f: about that bunch of R3s.


What radius is an R3 switch ?  ???


The yard area looks like it will be an interesting puzzle to crack !  :brill:



:moose:




Si.


Steve P
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Si,


These are LGB R3 switches. 
So same diameter as LGB R3 track: 2390mm center to center.
Which I believe is 94".  
So radius would be 47"


Steve P



Steve P
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There's light at the end of the tunnel(s):

7 days of curing and I can build the "mountain" on top of them.

Steve P

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Last edited on Tue Sep 11th, 2018 08:36 pm by Steve P

Michael M
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Steve,

Any concern about cars maybe getting blown off the track by a high wind when going around that reverse loop?

Steve P
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Michael,

Yes, in fact I have concerns about derailment in general.  
There will always be a struggle with debris on the tracks, its rugged country with pine cones, leaves, etc. blowing all over the place.  
And most places the edge includes a sizeable drop.

You'll notice that I made the planks of that curve fairly wide, 
wide enough that the nose of the BigBoy never extends beyond the edge when going thru the curve.  
This will allow me to add a fairly simple guard rail by merely tacking up some sort of band like cedar lawn edging. 


Steve P



Steve P
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The mountain has been added. Will make it taller next year... Have cast concrete portals and am currently curing them.  Have purchased some nice tile to decorate them, then all thats left is to glue them up!

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Last edited on Tue Sep 18th, 2018 08:43 pm by Steve P

Kyle Moore
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"G Scale Big Boy"


Make a consist of 2 for the fun of it? Looking good so far!

Steve P
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Hi,

The 2 boxcars are the battery and electronics cars, ie. dead rail, so they are necessary!
I hope to land some sort of job this winter so that I might buy 10-20 pieces of rolling stock.  
I expect to be setting the final pieces of tile on the tunnel portals this evening, so pictures of those will be posted today or tomorrow.

Steve P



Steve P
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The portals are finished.  The thinset/grout has to dry for 7 days before they can installed outside.

Steve P

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Steve P
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Finally got a break in the weather allowing me to install the portals:

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