A 2% grade (or any other percentage)is easily measured and
constructed in a straight track situation, but just how does one
accomplish the same on a curve? Does one mark a length of flixible
track prior to bending it to the desired curvature, knowing that
various marked points must be at some elevation which complies with
the 2% increase? I suppose that this works if you are actually
constucting a layout, but how do you draw a track plan for a 2% grade
on a curve, knowing that each point on the curve is at a 2% increase?
Now, if you are still with me, how much higher must a track or tracks
be in order to cross over other tracks. A friend who insists for what
ever reason (must need some sort of professional intervention L.O.L.)
on modeling in HO tells me that he uses a 4 1/2 inches minimum for
his clearance. What is the accepted minimum vertical clearance for S?
How do you plan grades on paper so that a bridge at a specific place
on the layout will be high enough over other tracks? This is
especially important if you are pre-planning scenes for their visual
impact. Again, a curved or straight grade would make such planning on
paper essential.
Thanks to all,
Gene Cimino
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