Re: [Z_Scale] Re: weighting cars
- My weights came from some fairly thorough tests too. I note that my
scale tends to weight cars a little heavier than yours, for short
cars. By my scale, a 40 foot car would give .346 oz, or 9.8 g. So,
rounding, my scale would be about 10 g, 11 g, and 12 g, for 40 ft, 50
ft, and 60 ft cars, respectively.
On Jan 2, 2007, at Tue,Jan 2,3:59 PM, Robert Ray wrote:
> Geoffrey H Wathen wrote:
>> So, for example, a Pullman 3 bay hopper that is 3.11 inches long
> ought to weigh in at 0.15 oz + 0.09 oz X 3.11 in = .423 oz. As this
> is only slightly less than the .50 oz you're using, it seems that
> you're on the right track! ;-)
>> Does anyone have any comments regarding use of this as a standard?
> That is good math, and very close to what I like to use, as a 3.11"
> car is one I would catigorize as a 60 footer. I like to catagorize
> cars as 40, 50, and 60 footers and give them 8, 10, or 12 grams total
> weight. your math totaling .423 oz (11.844 grams) is in effect 12
> grams, so I say your math is good!
> What I did was exhaustive tests on different track, through turnouts,
> pulling trains and pushing them backwards through turnouts at slow
> speeds, and varied weights until I setteled on weights that seem to
> work well, as a compromise of being light enough that you can pull a
> lot of cars, yet heavy enough that the wheel bounce is reduced through
> turnouts. I just like to round weights off to grams, and car lengths
> to nearest 10 feet to make it easy to remember.