After a long hard look at things thus far, I finally decided to bin both of my proposed and earlier published plans, and opt for one I’d been fond of for some time, and along with it, the proposed use of Hornby track:
Why the change?
I could harp on endlessly here, but thankfully for you, reader, I shall refrain apart from simply to say: I just don’t like plastic ‘frogs’.
To that end, I’ve been shopping:
Replete with metal crossings which appear far more robust than their Insulfrog/Hornby/Setrack counterparts, I can employ tried and tested electro-froggery to avoid frustration.
Despite my earlier concerns about bent points and up-hills climbs, the main putter-offers resulting in my opting for the above layout of tracks, my anxieties were soothed by Peco’s recent release of a metal frogged version of their Setrack curved point which we’re assured can accommodate even the largest wheel arrangements the hobby may offer (it’s many years now since I employed the plastic version on my son’s oval affair, with disastrous results for even tiny 0-4-0 wheel arrangements, and how I enjoyed that overwhelming feeling of revenge when tossing it into our metal bin of the time - remember those, people?):
I was going to attach the link here but YouTube has recently changed the format, so I’m not sure how to go about it, however if you just type ‘Peco curved point’ into your search engine, then you should be able to see it. It really does appear a smooth product.
So that was the curved point worry addressed, what about the climb?
It occurred to me reverse the plan in ‘edit’ as it might provide a solution. It did! (Btw, I stored this plan some time ago, so can’t remember where I found it thus am unable to give credit where it is due. Still, I’m most grateful to whomever you are).
On the original, the climb would have been steeper due to the shorter run from the converging track exiting the tunnel mouth, whereas the mirror image places this on the straighter section, affording a longer length and thus reduced percentage climb, benefitting from some extra momentum built up from the decline side of the loop.
Incidentally, I conducted a rather unscientific test the other day involving a tender driven Schools, hauling one Bachmann MK1 on a short length of wood, raised at a ratio of 1:22.5 on the bench, with only the slightest hint of wheel slip apparent, so something of that order should be possible with a bit of momentum behind it. Result.
So in a nutshell, there we have it.
Yet again I’ve contradicted myself, but in doing so I’ve overcome the obstacles to a plan which I’ve been eager to build and eventually use for sometime; one that will also ‘better fit’ (please excuse the use of modern English here) the space available.
Many thanks for your forebearance and interest.
jonte