Main under Tipple : "P4E" VS "Common as mud"
Dear James,
Apart from photos of period tipples being relatively rare to begin with,
I suspect the reason you are struggling to find "mainline runs under tipple" pics is because,
as with many things in model RRing,
"a prototype for everything" may not always co-incide with what is common.
Now, I need to state upfront that I'm not a appalachian coal-hauling-expert by any means,
but a quick trowell thru the library and the usual online suspects suggests that the railroads took some deliberate and conscious effort to keep the major mainlines seperate (and out from underneath) loading-areas/tipples. Coal branch "mainlines" and dedicated balloon-loop "mains" tend to be special cases, as the traffic is likely to be coal, all coal, and only coal trains. (IE not "general allcomer traffic").
However, for "double-track high-iron general-purpose" mainlines,
it would take an significantly extenuating circumstance
(EG literally a tipple built on the side of a valley,
with nowt but a 2-track-wide ledge between the cliff-face and a river),
to run "highball main" under such a close-confines obstruction...
(The taller the tipple is to clear "mainline trains",
the greater the "free-fall distance" for the coal which is being loaded into the hoppers.
More Free-fall distance = more spillage.loss from tipple> car, more airbourne dust, and general in-efficiency
Equally, any clearance obstruction represents a maintanence and potential derailment risk. If the aim is to "keep the trains moving", then eliminating potential risks is a logical thing to undertake).
I don't want to rain on the parade, and by all means I get that the model layout's physical limitations kinda emulate the above-posited "between a river and a cliff-face" prototype situation
but with the popularity of Appalachian Coal Hauling modelling and sites like Dan B's,
if the pics don't exist, and the documented prototype trackplans don't suggest it,
then there's probably a good case to suggest it wasn't a "common occurance".
Happy Modelling,
Aim to Improve,
Prof Klyzlr
PS having spent some time researching various proto RR subjects for potential translation into modelling missions, I've found that:
- on any given railroad or subject, there's usually between 2 and 5 "key resource" books/sites
- once you've exhausted those respected sources, the effort to find anything furthur
(or try to prove something contrary to those respected sources)
usually becomes exponentially harder, if not impossible...
(and indeed, you may be searching for "something other than normal" which simply never existed).
- whether the effort to uncover the "crucial missing piece of information" is worth it,
(esp if you are the kind of modeller who refuses to continue with a project until the outstanding question is definitively answered), is only a question you yourself can answer
(HINT: there are plenty of ultra-high-fidelity models without layouts, and proposed layouts without models worldwide, because the modeller in question is stalled, pending a minute piece of info which may never have been documented, and/or they may never find...)
Given this, you face a choice:
- Accept the resources and evidence as "that's how it must have been",
and go forward confident that whatever is on the layout is supported by historical evidence
OR
- Commit to your decision to deviate from the historical record
(it is your layout after all, and no-one can take that from you! )
and adapt the "deviation" so it "looks plausible" within the context as best as you can
Logging modellers face this on a daily basis, as do shortline modellers...