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Old 12-21-2017, 09:58 PM   #11 (permalink)
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This is some more of the underside. The brass shim pads are a wear surface for truck bolsters to sit on, they are 0.015" thick. These will be glued to the location shown.




This is the development of the number board for each end, note three are narrow and three slightly wider.


This is a number board installed. Lots of fiddling to cut the number board lens holder.


The cabs have been interesting and I've made several construction alterations and now I'm doing more as I want to ultimately end up with a unibody for rigidity and better support of the frame.


Here I've opened up the ends of the cab walls to accommodate guides I'm putting on the ends of the hoods. This will allow the hoods to be installed and then the cab assembly to slide into position and lock all three main components together.



More to come,
Cheers.
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Old 12-23-2017, 12:53 PM   #12 (permalink)
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Outstanding styrene work. Canít wait to see more.
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Old 12-24-2017, 12:04 PM   #13 (permalink)
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How did you do the window seals? Looks like 1/2 round rod? I'm trying to figure out how you made such smooth curves?
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Old 12-27-2017, 04:04 AM   #14 (permalink)
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Window seals look like flat strip heated and formed into the window openings.
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Old 12-27-2017, 05:53 PM   #15 (permalink)
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The shadows on the seals sure has the smooth changes of something rounded, not the sharp shadows of right angles.

But we'll see.

Greg
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Old 12-27-2017, 10:17 PM   #16 (permalink)
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I've used half-round from Evergreen for window seals. Bending it takes patience, but doable. Usually I use the solvent to help bend the corners, but you can't get too tight doing that lest you break/tear the half-round.



Later,

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Old 12-30-2017, 05:27 PM   #17 (permalink)
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Sorry about the delay in responding.

The window seals are 0.030" round styrene. Learning to bend them was quite an exercise, however, I found that holding the rods against a 100 watt light bulb for a few seconds provided enough heat to relax the styrene so I could bend it without breaking. Please don't ask how many attempts I made before "my" light went on.
Kevin, yours look very good and I'm not sure I want to do a close up photo of mine. Not yet anyway, maybe when I've done some repairs and filling.
Cheers.
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Old 01-27-2018, 06:06 PM   #18 (permalink)
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It's been awhile now, but I'm in the process of installing the louvers, the latches and the hinges. I think all together on the three engines there are 594 louvers, 153 latches and 351 hinges.
So it might be a while before I can post any further progress, they are taking much longer than anticipated.







The door latches were supplied by Shapeways. The louvers are 0.060" 1/4 round and as can be seen need to be trimmed yet. The exhaust stacks were machined from 5/8 acrylic rod and the bolt details are from Tichy Train Group. The mesh on the air intakes are aluminum and I think I need to find something a little stronger as I keep putting my fingers through them. Leaving them off until the unit is finished would also be a good idea.
Cheers.
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Old 01-27-2018, 08:46 PM   #19 (permalink)
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wow!
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Old 01-28-2018, 09:37 AM   #20 (permalink)
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Very much enjoying watching your progress. Crazy question though: are you committed to doing everything in styrene? Parts where you're making the same thing over & over are good candidates for resin casting. That may be the laziness in me speaking, but I (speaking only for myself) never can build two things exactly alike.
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