![]() ![]() if adding tunnels remember need to have access to the track therein.īest wishes and I look forward to your further work. it will also determine the length of trains and cars you will be able to run (passenger cars in HO do not look too at home on smaller radius curves. thus, if you are able to move the turntable and roundhouse to outside of that loop it will provide greater realism.įinally, with the 22" radius curves in the loops, hiding that track in tunnels will make it easier on the eyes. the equation is: (Endpoint Height Startpoint Height) ÷ Clearance Height helix turns. Note you need to keep in the same unit of measure for clearance and heights so do a conversion if necessary always remember its 25.4mm to 1 inch. while many layout designs tend to run track around the roundhouse it is not very prototypical. Divide the height per turn you want by the difference in height between the start and end points. ![]() If I did the math correctly, it is at a 3+% incline.to provide 4.5" roadbed to roadbed clearance. That is a very steep incline except for the shortest of trains with good pulling locos. You might use a siding or two, but dont toss in a yard simply because theres unused space. Too many beginners invest all their time and effort into the trains. ![]() Geoff, I suggest you build a town inside the loop. My first concern is, if I understand correctly, the helix being 24" radius track in HO Scale? July 10, 2013, 05:14:29 PM Last Edit: July 10, 2013, 05:25:46 PM by Jeff. it is a creative design and I like the loop to loop with crossover reversing possibilities.
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