OK, so here’s what I’m looking for. I want to know approximate weights of prototype locomotives from the late 50’s. More specifically, I am modeling a fictitious branch of the Southern Railway, and will be drawing from their ‘pool’ of motive power from about 1957. So that means F units, RS-3’s, various types of switchers, etc. Also, the branchline splits, and the mining company has a few old steamers they use. I have a couple models of the Russian Decapods, so I need approximate weight on these, along with other smaller steamers a small mining operation in the late 50’s might have.
Now here’s the kicker, and the reason for the question. The premise is they have an ancient bridge which has a strict limit of ~250 tons, regardless of axle loading. Now as this is a mining branch, inbound cars are empties, and outbound loads are open hoppers. So, using Athearn 34’ offset side cars, these represent capacities of about 55 tons. Add the empy/tare weight and it’ll be in the 70-75 ton range. With 3 of these, and that bridge, being the approximate length of three of these cars, will be pretty close to its limit. Now, if a pair of diesels, be it RS-3’s, F units, or some big steamer, an idler car or two will be in order, to keep the weight under control. So if I select something that will move the train, without overloading the bridge (just like in real life), I can mitigate the need for an idler.
As always, thanks in advance.
Brad