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@Ken-Oscale posted:

Glad to hear you talking about vertical easements.  With 4% grades, I try to work in 2' of 2% at each end as vertical easements.

Each 2' of 2% easements accounts for about 1/2" of vertical change.  To get to 6", that leaves 5" more of vertical height to attain.  To get 5" of vertical change at 4% needs about 10' of run.  So 14' total to rise 6".  If it was all 4%, you would only need about 12' of run to reach 6" of vertical change.


That sounds approximately equivalent to my 16" at each end for 1/4" rise (1.5% transition) for a 3% incline.

@Oman posted:


I like it, but I'll have to review the access hole split. I would consider a slight curve to the right; thereby splitting the access hole in half diagonally and extending the yard rails even further.


And now a better version. I replaced the #5 turnouts with O-72 for the yard.Atlas12d


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I've been following Ken's layout design. He showed a yard where the track spacing wasn't ideal. That sent me back to look at my yard. I think I will replace the O-72 yard turnouts with O-54. That reduces the track spacing to approximately 4". It looks better and the yard takes less space.

Thanks Ken



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Last edited by Oman
@Mark Boyce posted:

Very smooth looking cutting and track, Keith!!

Thanks Mark

The actual track isn't following the SCARM plan. SCARM called for a cut 2.86" straight on the turnout leg. Actual 1.75". SCARM called for 1.75" at the entry to the turnout. Actual is more like 1.5". I installed a 1.25" for now. But, that's okay.  All the sub-roadbed was laid out with a 48" adjustable home made compass. So, I have numerous datum points. I just make sure the track is centered, parallel and starts and stops at the datum points. 

Today, I completed the Y. Eventually, I'll replace the temporary plywood roadbed with foam roadbed. I used plywood under the flex track to give the track screws more strength while forming the curves.

In this photo, the left leg of the Y is sectional track.


In this photo, I formed the flex track (left Leg) by eye.


Here,  I formed the flex track using the SCARM 1:1 print. I just discovered this SCARM feature on the weekend.



My home made chop saw for cutting track.




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@Mark Boyce posted:

Keith, That is a smooth looking curve you made with Atlas flex track!  I like your home made track cutting chop saw as well!!  I printed out my track plan 1:1 for laying track.  It is a really wonderful feature!  I'll look forward to seeing your continued progress!

Thanks Mark. My US 500 blade on the Dremel Ultra-Saw was labelled for wood and metal, but the cut leaves significant burrs. When I bought the Dremel a few years ago, that was the only choice. Now they have a 3.5" abrasive cut off blade for the Ultra-Saw. I just ordered one. Today the US 500 blade is labeled for wood only (not metal).  I'm expecting even better track cutting results with the cut off blade.

Ditto on the Scarm 1:1 printout; extremely valuable when working with flex track. 

I'm getting near the end of building inclines. Atlas track on 4.5" centers and WS risers doubled up at 5" has caused some (builder) errors. I'm correcting them. If I were to start over again, I think I would use single 2.5" WS risers and build up them out to 4.5" with 2 layers of 0.5" foam sheet material. It would also be less expensive.

I'm working on installing the Atlas double track plate girder bridge; you can see in the background.



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