mesimpson

It has been a while since my last post, so a bit of an update.  I have laid out the roadbed, cork and track for the grade down to the lower (northern) staging yard. While everything is set up I have not fixed the roadbed to the supports so I can adjust the grade if required.  Initially I have everything set up at a 3% grade for testing purposes.  Running test trains I have figured out that a single 4 axle unit (Athearn or Atlas GP) will handle 8 cars (metal wheels, Kadee 158 couplers and each car properly weighted) without slipping.  Surprisingly 2 units can handle about 20 cars without slipping, I was expecting a more linear 8 cars for 1 unit and 16 cars for 2 units.  It would appear that my planned 3 unit consists with 15-20 cars should have no trouble getting out of lower staging with a 3% grade. 

I realize this will likely make the locomotives work hard, but it will be the only> 2% grade on the railway, and the 3% grade is only about 20 feet long.  Now to get the staging yard in place and get it ready.  Some photos to follow.  

Marc Simpson

https://hudbayrailway.blogspot.com/

https://ageologistchasingtrains.blogspot.com/

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mesimpson

My fancy grade gauge - wood

DSC_4163.JPG 

My fancy grade gauge - wood block with markings clamped to the end of a level.  Seems to work well.

DSC_4155.JPG 

Flin Flon Junction with left track leading to lower staging, right track heads to Flin Flon.  The apparent grade here is more than reality as the left track drops at 3% and the right track has a 2% grade up to Channing.  I have to figure out how to hide the grade here as the prototype has minimal grades.  Perhaps a LOT of trees and big rock outcrops will do the trick.

DSC_4158.JPG 

The "trench" down to staging, to the left is the track to Flin Flon.

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MLW

...

Looking good. Please feel free to post more pictures of your layout

For your 2% grade, how long is it from top of the grade to the bottom (where it levels out?)

 

 

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mesimpson

2% grade

The 2% grade in the pictures is quite short, probably about 4 feet actual length.  One thing I want to try and capture is some of the up and down over the terrain between Flin Flon and The Pas, some due to the lay of the land and some due to poor track maintenance.  Some more northerly areas of the line to Churchill travel over permafrost which has caused issues with roadbed stability.  Over the years the railway has tried various means to stabilize the roadbed, with variable success. 

Another area with grade will be in my helix which is not yet built to go between the two levels.  5 turn helix in the adjacent room which according to my SCARM drawing should have a grade of just under 2%.

Reply 0
MLW

.,.,

Thank you for your response: 2% in 4 feet + Helix comments.

I can imagine what the right of way might look like especially over permafrost.

That is a cool idea mimicking low/high point of he roadbed. Northern Manitoba rr must provide for lots of unique vignette as well. 

Thanks for the feedback

 

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