on two layouts that are "around the room" style I like to pick
a point in the center. The reversing loops are anywhere
direction switches from CW to CCW. The HO layout I help with
was figured differently, it started as a "dog bone" with two
cross overs that reversed direction. Then they connected the
ends of the "dog bone" forming a
third reversing section. If we had wired it thinking from the
center, only the "dog bone" loops
would have been reversing.
you don't want a long train or two shorter trains crossing
the gaps at the same time.
couple of years ago this group was presented with a layout
with reversing questions and from the center point worked
On 3/4/2019 4:02 PM, Tom G. via
Thank you, I understand. I understand the reason the whole
train (or at least all powered sections need to be on one side
as well. Thank you!
Best to draw it out so you
can see it. First yes you double gap both ends. If you
draw the rails on paper with one being black and the
other rail say red. When the red meets up with a black
you have a short. Thus the need for a double gap. But an
engine or lighted passenger car is not on one side and
then magically on the other side of the gap. You have
for a period of time one truck on one side and the other
truck on the other side.
So you need a way to flip
polarity very fast.
More complicated is if your
reverse loop isn’t long enough. But that is for later
after you get the above concept.
Thanks for the tip!
Can someone explain why my thinking is incorrect? If
you gap the rails into the loop and apply bus power to
both sides, separately, why does it matter if there’s a
reverse loop? Won’t the train just get power and keep
On Mar 4, 2019, at 3:35 PM, rhemker <rhemker@...
Just placed my simple method of finding
reverse loops in the Photos section. I find a truck
and place a small piece of blue tape on one side of
the truck. Then, I place the truck on the track with
the blue tape on the north rail and run it around
the layout. If you find the blue tape winds up on a
south rail then you've discovered a reverse loop.
This works for simple reverse loops but not sure if
it will work on complicated reverse loops within
loops. Can't remember where I got this tip but, be
sure I did not discover it.