After a bit of time googling and coming up empty I am either not using the best keywords or there are/were no tunnels with three tracks running through them.  I am modeling the 40's-50's.  Were three track tunnels not utilized?  I am betting the expense of widening the tunnel would have made it cost prohibitive.  

I am designing my next layout and a 3 track tunnel would help me hide the switches that run down to the lower level while maintaining my passing siding. 

Thanks for any information or pics.

Original Post
T4TT posted:

After a bit of time googling and coming up empty I am either not using the best keywords or there are/were no tunnels with three tracks running through them.  I am modeling the 40's-50's.  Were three track tunnels not utilized?  I am betting the expense of widening the tunnel would have made it cost prohibitive.  

I am designing my next layout and a 3 track tunnel would help me hide the switches that run down to the lower level while maintaining my passing siding. 

Thanks for any information or pics.

Correct, just like rr bridges, most are two track tunnels and a single tunnel next to it.

member:Golden Spike Club Charter Member

It's your railroad, your layout, do what you want or need to make it work, for you! Not everything needs to have a prototype, it might just look fantastic when your finished with the project.

Rusty

And as the sunset faded, I spoke to the faintest first starlight.
And I said next time, Next time, We'll get it right!
MELGAR posted:

If your railroad needs three tracks through a tunnel, I don't see any reason why you shouldn't build it that way. You can use two portals for the three tracks. Again, check out Oscawana Tunnel.

MELGAR

I did and IT's Two tunnels, ONe with two tracks and another with one track. I believe at one time Both tunnels had Two tracks in each of them.

member:Golden Spike Club Charter Member

T4TT posted:

After a bit of time googling and coming up empty I am either not using the best keywords or there are/were no tunnels with three tracks running through them.  I am modeling the 40's-50's.  Were three track tunnels not utilized?  I am betting the expense of widening the tunnel would have made it cost prohibitive.  

I am designing my next layout and a 3 track tunnel would help me hide the switches that run down to the lower level while maintaining my passing siding. 

Thanks for any information or pics.

If you are going to hide switches in a tunnel, be sure that you can get to them and their switch machines for maintenance.  The hidden ones are the ones that will have problems!  (A well-known Murphy's Law variation.)

I think the Erie tunnel in Bergen, NJ has at least three tracks.

I would make the mountain "top" of the tunnel out of lightweight foam and a removable section, so you can address issues with the switch tracks when they arise.  It seems that pins or pegs in the bottom of the tunnel, along with corresponding holes in the platform surface would make it easy to remove and replace for troubleshooting.  My $.02.

Here's mine:

sportal

I think that it is a good idea to avoid three tracks side-by-side in the same portal--makes it harder to get a good "into the dark" look.  (the thing on the left is not a fourth tunnel entrance--it is a partly-underground trolley shed).

--pete

 

 

My heart is warm with the friends I make, 

And better friends I'll not be knowing;

Yet there isn't a train I wouldn't take,

No matter where it's going.

                        Edna St. Vincent Millay

 

Attachments

Photos (1)
Ted S posted:

I think the Erie tunnel in Bergen, NJ has at least three tracks.

I would make the mountain "top" of the tunnel out of lightweight foam and a removable section, so you can address issues with the switch tracks when they arise.  It seems that pins or pegs in the bottom of the tunnel, along with corresponding holes in the platform surface would make it easy to remove and replace for troubleshooting.  My $.02.

sorry but its just two tracks if you google it...

 

member:Golden Spike Club Charter Member

Add Reply

Likes (0)
Post
OGR Publishing, Inc., 1310 Eastside Centre Ct, Suite 6, Mountain Home, AR 72653
330-757-3020

www.ogaugerr.com
×
×
×
×
×