开云体育The conical spring design I first saw on the old Tyco 10 wheeler that was
being sold back in the 1970’s it had a conical spring for the 4 pilot wheels and
worked very well. The link I gave you for the spring is about the right spring
to use, as available from there stock spring range unless you want to have a
custom spring made which would cost you an arm & leg, not to mention having
to perhaps buy 1000 minimum. I don’t know how much weight you have in your loco,
but if that spring tend to lift the drivers slightly you may have to add a bit
more weight to the loco, which will make it run better and pull better. And yes,
small end to the top or loco chassis and big end to the pilot or pony wheels
frames.
?
Brian
Rawbelle County Workshops Qld. Aust. ? ?
Hi Brian
Thanks - the conical spring idea is intriguing. Am I
right to assume that the narrow end of the spring is centred on and attached to
the loco frames, with the truck bolster moving laterally under the wide end of
the spring?
Putting in see-saw compensation would be ideal, but
unfortunately the frames, etc. were all built rigid when I started construction
of the loco back in 2001(!). As it was the first etched brass loco I'd ever
attempted, I kept things simple (crude would be a better description). Still,
all part of the learning curve....So, thanks for the offer of etching
components, but for now I'm stuck with the original arrangement.
Allan
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