I have a 4' X 8' layout that rises to 3 levels or 3" on a perfect 2%
grade. It required a maximum radius curve ( 46" Dia ) on one end and 7'
of one side to rise to the 3" level. My smallest and lightest Loc (
88641 Deisel Hydr. Switcher ) can haul a 6 car work train with crane up
that grade with no problem Addition of one more car and serious wheel
slip occurs. Total track involved 13'. Judging by the group comments I
have very good traction to achieve that so some luck is also involved.
There are ways , like a Helix, to rise to 6" in a small area but
because the whole train is then on a constant curve, even 2% is steep
for more than a couple of cars
> In looking at photos of z scale layouts I see a lot of them have
> tracks that appear to have tracks with 5 to 6 inches of vertical
> distance between them.
> It seems from the discussion on this list that a 2% grade is about the
> maximum that is allowable without slippage. That means to get 6 inches
> vertical separation would take about 25 feet of track. From the size
> of the layouts I don't think this possible.
> Is my perspective of the pictures wrong or are people getting away
> with steeper grades? Dale
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