--- In [email protected], "scale S only" <scalesonly@...> wrote:
> I did try Proto 64 wheels on my old layout in a test
> format. While I could pull trains with those wheels, I could not reliably
> push them. Considering that the only difference in the test cars were the
> wheels (the same cars in the same order were used for the test), I came to
> the conclusion that the friction of the flanges against the railhead was
> able to overcome their small size and walk them over to the âfar sideâ.
> Some things just donât scale, like friction...
Hi Bill, It might have also been the flexibility and equalization of the
trucks? With proto wheeled models the smaller flanged wheels need perfect rail
contact so if a truck is stiff or tweaked a bit they might derail where a
larger flange could still stay on the rails.
I don't know how friction and weight scale but I've experimented with P48 and
P87 cars and found that they work ok as long as the track is smooth and fair
and the train length is matched to the prototype track curvature. I built a
mock up of the harlem transfer in P87 ( 90 foot prototype radius or about 12
3/8 HO scale radius)and on these tight curves I could push cars around slowly
in short cuts which is what the prototype had to do also.
I wouldn't be afraid to build a P64 layout as long as I was planning to use
very wide curves and carefully built equipment. For the typical small space we
usually model a highly detailed P64 layout of a New York waterfront layout
would be a neat scene to model. Trying to fit in larger mainline railroading
scenes and operations would probably be a disappointment when it came time to
push a long cut or cars around a too sharp curve. Regards Dave Branum
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