Re: Which of these two is better ??
- --- In email@example.com, zbendtrack@a... wrote:
> Don't forget that on ALL curves, one wheelNot so. The 1:1 trains have (not exactly, but close to)
> will roll, the other wheel will
> slide. Same with 1:1 trains.
tapered profile. The reason, to avoid slippage in the
turns. The inner wheel rolls on the smaller diameter, the
outer wheel rolls on the -closer to the flange- larger
diameter part of the wheel. High speed trains have "more
flat" profile than trains running on smaller radius turns.
The actual profile is very sophisticated, it compensates
for the projected wear too.
- This should get REALLY COMPLEX when you add super-elevation into the equation. Doubt my li' ol' Z-scale will get that far that adding super-el will make any tracton difference, but I did wonder if in Z-scale the single curve or two curve plus a straight made a difference. Obviously a grade that is steep enough shuts everything down, but being a newbie I wanted to know if adding a short straight helped at all if the radius started to become small. OTOH hand my 19" is a lot greater than a Marklin 5". So far the suggestions are just go for the full radius and forget the straight - except for asthetic purposes. I don't know why this is so, but I'm accepting it as 'fact'.
I do thank you all the several responses.
[Non-text portions of this message have been removed]
- a] a single curve of about 180 degrees; all on a 2% grade; and a
single 19 inch radius.
b] two 15 inch curves on the same 2% grade with one 15 inch leading
in and one 15 inch curve leading out plus about an 8 inch straight
between the two curves.
Go for the RADIUS!!!! The bigger the better.