Marquette wrote:Okay I don't get it. 110592 is 48^3, but 1/48 = 0.02083, and 0.02083 * 0.02083 * 0.02083 = 0.0000090379... so I don't get how you're figuring that.

But then I'm dumb. :)

Also, that is irrelevant to my original comment ...

I meant, cars being overweight in terms of scale weight!

If a 1/48 car should be 0.334 lbs to be to scale weight, that's 5.344 oz ... which number should then be considerably smaller than 4 oz for a 1/120 car to be in scale - thus TT scale cars are overweight! :D

That was for an empty car.

For a loaded car in TT, I take a brass Joma tank car as an example since I am just applying decals to one:

LTWT 45,900 + CAPY 80,000 makes a total of 125,900 lb.

To get that to TT, just divide it by 120 three times because you scale length, width, and height.

It is 0.0728 lb (1.166 oz).

NMRA says 3/4 oz + (3/8 oz x length in "), that is 0.75 + (0.375 x 3.6) =

4.725 oz. corrected: 2.1 oz

Conclusion: Yes, TT cars are overweight if they follow NMRA standard.

But!

I checked the real weight of that particular car and it was 0.90 oz. It was empty indeed, I have not filled any oil in it

So you can very well get all your cars very close to their (loaded) scale weight.

My cars do not follow the NMRA weight standard.

Last edited by Anonymous on Sun Apr 27, 2014 3:35 pm, edited 2 times in total.