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Post by areibel on Jan 11, 2020 12:21:35 GMT -5
Does anyone have any prototype info on the size of the EMD stanchions from say the GP35 up through the Dash 2's? I can't find it on any of teh usual sources on the web, and comparing some HO models they range from 2.5 to 3.5 inches wide and roughly two inches deep. And the lengths, long and short (if there are only two sizes, which could be wrong as well!) I am trying to buld a couple TT Scale models and I'd like to try and get some etched,
Thanks for any help,
Al
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Post by icghogger on Jan 12, 2020 7:47:24 GMT -5
Al, under our Diesel Detailing Data tab, a link to the EMD master Parts Catalog can be found. Not all of the parts have dimensions shown, but searching the resource may give you the answers you are looking for.
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Post by big train james on Jan 12, 2020 9:07:26 GMT -5
The master parts catalog will get you the heights of the stanchions for various models, but not much else. The drawings show the arrangement and placement of handrails and stanchions, rather than any drawings of the stanchion itself.
That being said, I have the specific info around here somewhere, let me take a look for it.
Are you using cad to lay out your etch artwork? And if so, which program?
Jim
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Post by ssgburme on Jan 12, 2020 11:46:39 GMT -5
should I measure a few tonight @ werq?
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Post by areibel on Jan 12, 2020 17:03:56 GMT -5
should I measure a few tonight @ werq? That would be a big help! I remember seeing pictures somewhere a long time ago, someone had put a tape measure to the front and sides to show the profile but I can't remember where they were posted. I'll check out the Master Parts index, I'm still not sure what would be the easiest way to do the varying lengths. I originally thought doing different lengths with a small tab at the top of each, they could be soldered to the handrail wire in a jig. But I've had two other suggestions I'm pondering- Make them all the same length and use etch shears to trim them down, and instead of using a jig have the actual railing etched as an assembly. I haven't gone over enough drawings to see if that would work, if the spacing is fairly constant it would work but for step ups it might throw them off. And I don't know CAD, so I'm going to try and twist my son's arm to draw them up. basically it looks like they're going to be .020-.025 wide and .015 thick, if I can get fancy I'll have the channel etched half way to make it sort of resemble the prototype. Kind of a pain, but it beats the first plan- hammering wire flat and trying to get them all the same! |
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Post by big train james on Jan 12, 2020 17:43:02 GMT -5
The top of the stanchion where it wraps around the rail should be 4" wide. The part below folded into a "U" should be 2-5/16" wide by 1-11/32 deep. Material thickness is 1/4". At the top, it should be 2" from the center line of the handrail to the point where the stanchion begins to narrow. Then narrowing from 4" to 2-5/16" over a 3" run.
There are at least two types of stanchions per loco, and probably a third if you count the end stanchions as I believe they are deck mounted. The two other types in question are the normal condition and a different base condition at the blower duct along the left side.
For the normal base condition, there are two holes. The bottom hole should be 3-1/2" below the top of the side sill (technically not the top of the walkway, but at scale who's counting). The top hole should be 5-3/4" above the bottom hole, center to center. The end of the stanchion should extend 3/4" past the bottom hole.
At the blower duct, the bottom hole position is the same, but the spacing between the holes is increased so that the top hole passes through an angle sitting on top of the blower duct. The center to center spacing should be 10-5/16".
The above info is for an sd40-2. The model does appear to make a difference, as I have info that shows the hole spacing for an sd35 at only 4" on center. Hopefully ssgburme can verify information with field measurements taken tonight.
Regarding etching the entire assembly, the only problem with etching the railing is that it will not have a round profile. Whether that is evident at 1:120 is a legitimate question. And as far as the different length stanchions, if you are going to bother etching them, just make the art correct for all of them. There's no sense in making them all the same length when it is effectively the exact same effort to make them different.
I admire the efforts of you guys to do this kind of stuff at HO an smaller scales. I'm trying to do things in O scale, and I think that's challenging enough.
Jim
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Post by areibel on Jan 12, 2020 20:07:29 GMT -5
Perfect info, Thanks James!!
We have had etched handrails before for TT and with paint on them they don't look bad from 2 feet (or even 18 inches).
But that was a stock set for a GP38-2 so the spacing and lengths were set, but I'd like to be able to use them on different projects. A jig with correct heights would probably be best, even if it would be the most "fiddly" way!
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