How'd I miss this thread? Alwin, that's a great looking car. All you need now is about another 100 more and you can have your own ore dock!
And to Michael,
Yes, iron ore is very dense. I was allowed to pick up a chunk of the ore while in Hibbing, MN at their mining museum and it's heavier than most other types of rock. While coal weighs about 1100 kg per cubic meter (more or less, depending on type of coal), and copper ore weighs about 2000 kg per cubic meter, iron ore can weigh as much as 2900 kg per cubic meter, nearly three times as much as coal.
In addition, I believe these ore cars were designed to carry ore pellets, which would be even denser than the ore straight from the mine since the pellets would be filtered and condensed iron ore. That's why an Iron ore car and a coal car, both rated to 100 tons, are completely different sizes.
**EDIT** I see Alwin already answered the question, but here's the science behind the matter.
Last edited on Tue Apr 22nd, 2014 02:49 am by jtrain
Have done a little more. Made some parts of the door operating mechanism. Many little parts of that are missing but are not very visible and to smal so I leave them omitted.
Also made one grab ladder. Are there on both side ladders or only on the side were the brake wheel is?
Underside with the parts of the operating mechanism.
A black and white with a photo from the prototype below.