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Posts Tagged ‘Stuttgarter Strassenbahn’

I’ve been out and about a bit this week and therefore away from my modelling bench but still managed to work a bit on some of my more ambitious ideas.

One is that the model of the Körschtalbahn will be at least partly electrified, because the one thing I need in my model making life is another layer of complication.

This week, finding myself at the local tram stop with time, & a camera, if not decent weather, I decided to take a couple of pictures of the wires there for ‘research’…

The trams in Stuttgart work using a a 750v DC system, which seems to have been pretty normal for German urban and rural tramways back in the day when AC electrification was newfangled technology requiring components as big as a house. As the KÖB would probably be classified as an ‘overland tram’ this is a likely system. So far so good.

On the other hand, every now and again something like this happens:

That’s some serious knitting right there. Those lumpy black cables are power supply to the overhead. Clever types who understand electricity have tried to explain why this and I got as far as understanding that DC systems have pretty rapid voltage drop unless you make the cables the size of drain pipes, so you need to keep boosting the power. According to my entirely unscientific survey,in this case this happens every twelve masts or so.

Which is all well and good but it’ll be a bit awkward to make models of.


At this point sensible people point out that really, no-one will notice if I don’t have the extra details,in fact a lot of model makers take the pragmatic approach of leaving overhead wires off their models altogether and just having uprights, pointing out that wires are obvious to us because we see them silhouetted against the sky, and from above they’re pretty invisible. Either way, I could ignore the need for the power supply.

Well, possibly.

As the Körschtalbahn currently consists of a railcar, still in primer, a van and an as yet unfinished diesel, this is not going to be a decision I need to take for a while anyway.

Probably should spend more time building models and less running about taking pictures…

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