Ben,
I body mounted my couplers early on--I made up some plastic blocks and
drilled mounting holes. I use SHS couplers to keep from fouling the trucks.
I do get my FM trainmaster and the Sd-60 confused sometimes, but I think
both have situations where the middle axle becomes a pivot point or high
center. Perhaps the difference between AM's #125 wheels and the NWSL
#110 might make the difference in derailments. The problem is my SD-60
was also acquired used with really big flanges. On one of the engines I
cut off one spiral on the spring to help with that issue. I haven't run
it for some time so I remain confused on that point.
Bob
Bob,
Have you frame-mounted the couplers? Consisted SD60s with talgo
mounted couplers don't play well with each other or with locos with
frame-mounted couplers. The loco last night was my first frame mount
job and it tracked very well except over a questionable section of track.
Lionel's SD70 has only 1 sprung axle per truck - I think the leading
and trailing axles. It tracks well, too, however the center wheels
rides a little high with tire not making contact with the rail head.
Ben Trousdale
--- In [email protected] <mailto:S-Scale%40yahoogroups.com>, Bob
Werre <bob@...> wrote:
>
> Ben, I can talk from experience in that sometimes a cracked gear is
> almost impossible to see and maybe only apparent under actual usage.
> You might just consider replacing the whole power truck to save further
> frustration.
>
> I've had a bit of a issue with mine tracking properly. I test it on my
> home layout but it normally runs on our modules. Even with some
> questionable track it seems to run at home very well. However I
> replaced the drive wheels with NWSL a couple of years ago. The problem
> is that it just runs off the track on our modules' curves and
they're in
> the 45" range and flat. Reminds me of when I learned to roller skate
> and the hunting to find a happy medium. I have fooled with the springs
> in the middle axle with some improvement; this is after I ran it for
> awhile without the center axle with total success.
>
> Bob Werre
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