Dave Nelson said: Consider that a box car underframe has a lot less steel than a flat car. It's not so much a matter of adding the weight of the boxcar superstructure as redistributing mass higher

“Any super elevation in quite a bit of extra safety.” [sic] So wrote Dave Nelson. And for preventing a train or car from rolling off to the outside of the curve at speed, sure, that makes

I think Atlas still carry them, but not sure, the part number is BLI 140002 and there is a link here to it. Atlas Model Railroad Company, Inc. Online Store - HO 40' BOXCAR STRAIGHT PANEL ROOF

Who better to ask than the members of this list? You guys are all great. The problem I was working on appears to be solved… the omission of a safe maximum unbalanced center of gravity – how far

Or, you can just try to match actual prototype paint chips. https://www.flickr.com/photos/timboconnor/17098035956/ Putting a label on a bottle does not make it accurate. Tru-Color is known to sell the

Dave, That could be the arcane question of the month, if not the year. As I'm sure your are aware, this isn't readily found. Some values can be picked up in reading track-train dynamics studies and

On a bit more thought, perhaps the Acela moves its center of gravity sideways to accomplish this feat. Since the cars tip, perhaps the center of gravity really can be moved enough to make the kind of

I read this in the (1947) article cited: "Amtrak’s 150-mph (241-km/h) Acela creates its own bank angle by tilting up to 4.2 degrees. If the Acela is operating on a curve whose out-side rail is

Tru-color makes two versions of this--one for pre-1945 cars and one for post-1945. I have used their paint and it is great--it sprays perfectly right out of the bottle and dries glossy for

Probably old news but need some ATSF freight car red. Any help here about brand and/or mix that might get me close. Need to do touch up work on Walthers wood cabooses. Just not sure what is

Not trade literature, but a 1947 Scientific American article http://www.scientificamerican.com/article/the-physics-of-disaster/ Tim O'Connor I've never seen a discussion of this in the traditional

---In STMFC@..., <Lake_Muskoka@...> wrote : How far above the railhead would you say is the center of gravity for your average empty STMFC? Really. Our software team has added curve

I think, back in the days of natural pigments mixed in naturally polymerizing oils such as linseed oil, that lampblack in oil was considered a better and longer lasting coating for metal. Oxide

The recent covered hopper discussion makes me wonder why many railroads painted their freight cars with 2 different color paints. Why not just one? Was black paint cheaper? Black house cars

The car standards for the La Mesa Model Railroad Club are by far the most stringent standards that I'm aware of, and I pasted in the center of gravity standard in answer to your question. I.

Presumably consideration was also given to the fact that the carbody.and trucks were only held together by center pins, although there were pads on both sides of the bolsters which could support

The RPM Valley Forge event is in full swing. A short intro has been posted on my blog and more photos will be added later today. The model display room is pretty

A lot lower on a flat car than a house car, with a gondola somewhere in between. Seriously, the mass distribution propoerties vary not only by car type but by construction. The trucks were generally

How far above the railhead would you say is the center of gravity for your average empty STMFC? Really. Our software team has added curve resistance to the rolling resistance values and while

John, SIG, ie Special Interest Group, is a NMRA term/phrase. There is an application and guidelines through the NMRA for becoming a SIG. Yahoo Groups are an entirely different animal, so to speak.