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Old 06-07-2007, 08:15 PM
ThoroughBreed's Avatar
Join Date: Apr 2007
Location: Hopkinsville, KY
Posts: 812
HO scale incline?

Ok, I have a small double mainline already, 8' x 10' outside dimensions. 90 % of the track is for the mainline, with no storage available. I started building ceiling tile mountains last night and thought about adding a second level to my layout basically for storage tracks.
I'm laying the ceiling tile in layers, so It takes about 12 layers to equal 7.5 ". I've got enough room around the outside of the outer loop for another track, without being on the edge.
My inner radius is 29" and the outer is 34" on all curves, except the inner passing siding is 26". If I start the outer run on the existing switch and run it thru the mountains, my max incline should be about 2%??? Does that sound about right? It will have 130" of straight run and the 3 curves before getting to the upper level. So about 13'-14' of run to get to the upper level. I'm thinking of putting the upper level at 7" above railhead of lower level. 7" - 3/4" foam, - 1/4" cork, - 3/8" plywood, = 5 1/2" above railhead. I generally make my framework out of 1x3 strips, but if I do that, it will only leave 2.5" above railhead. But I can cut portals into the frame for tunnel access.

The blue line is the proposed line
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Old 03-05-2008, 11:32 PM
Allegany2666's Avatar
Join Date: Feb 2008
Location: New Jersey
Posts: 563
I'm not 100% sure but I think your calculations are off a bit. I think your more at 5% but I could be wrong
If you try going to


They have a grade calculation table very helpful.
Just my 2 cents worth, I spent the rest on trains
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