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Friday, May 20, 2022

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Brass Girder Bridge

5 years 3 months ago #18208 by ZRailFan
Brass Girder Bridge was created by ZRailFan
So over time I've collected a lot of locomotives, but as yet do not have a completed layout to break them in. So I decided that I'd create a small "Figure 8" layout that would exercise the given locomotive in both directions, forward and backward. Since I hand-lay track, I'd created a nice 30-degree crossing, but then realized that I'd have issues with polarity. Sometime I'd convert to DCC, but for the moment all are DC. That posed a problem.

I decided to then elevate the roadbed and shelve the crossing in lieu of a bridge. Since I don't intend to do anything more with this layout than break in locomotives, the bridge could have been as simple as a sheet of plastic or brass. But where is the fun in that?

So instead I took some time and created this girder bridge from scratch. The sides were sheet brass I cut to size then welded brass strip to the top and bottom. The support girders are 3/16 X 1/16 I beams, the track supporting girders are 1/8 X 1/16 I beams. I drilled through the web of the larger support beams so I could run the track support beams through. Then those were welded to the sides. For plate detail I soldered 1/64 X 1/32 strips to the sides, and have the same size strips beneath the large supporting beams as 'X' braces.

I can't say a prototype would necessarily skew the bridge as much as I have this one, but I was limited by table size as to the overall length. This skew fits the table and trackwork. And it's interesting to look at, I think. I painted the ties and rail, but I think I'll leave the brass unpainted for show.

Perhaps I should have snapped pictures and blogged...there were several places of interest. And one wouldn't necessarily need to use brass. That's just the medium I prefer.
The following user(s) said Thank You: southernnscale, TheWag, stonysmith

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5 years 3 months ago #18209 by southernnscale
Replied by southernnscale on topic Brass Girder Bridge
Looks outstanding! I don't see to many people here any more they all have move to Facebook links:
Z Scale Model Trains
Z Scale Model Trains Scandinavia
Z Scale Model Railroading Enthusiasts
Some still show up at ZCS on chat days! good to here from you again take care!

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5 years 3 months ago #18211 by ZRailFan
Replied by ZRailFan on topic Brass Girder Bridge
Seems to be the way of things. I don't use Facebook (or Twitter, or SnapChat)...privacy concerns. Being a software engineer myself by trade, I know the dangers of putting stuff "out there" like that. But thanks for the heads-up.

I noted for a short time your designs weren't available at Shapeways... ??? :)

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