--- In [email protected], Bill Rigsby <[EMAIL PROTECTED]> wrote:
> A 2% grade in S equals 15.625 feet, 100 scale feet, for a rise of
>.375 (3/18 ").
> The question for you Layout owner / operators, is what are you
using for grades on your systems.
> The other question is the amount of power required to haul cars
up these grades.
Those number confuse me! A 2% grade is 2% in any size, it is not
scale dependent. rise/ run=slope. 100 scale feet in s size = 100/64
= 1.56 real feet x .02=.03125 real feet x 64= 2 scale feet.
As for what grade to use I'd guess most folks try to keep it 2%
or less( the same as the cross slope on a sidewalk) How much power is
required? Enough to get the train over the hill!! You want steep
grades you'll need more locos. The SP ran long trains down the flat
san joaquin valley with 2 locos but going over the 2 1/2% tehachapi
required 6 locos for the same train length .....dave
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