Barduck Posted February 2, 2015 Posted February 2, 2015 (edited) With some diesels done I really wanted to return to steamers so I chose the AC7 Cab Forward. Basic design has been done in LDD (as you can see in the render), and the build itself is allready 95% done (just wating on the PF motors to power her) cab forward by Barduck12, on Flickr Edited February 2, 2015 by Barduck Quote
zephyr1934 Posted February 2, 2015 Posted February 2, 2015 This looks to be a very nice follow up to your DDA40DX. I am looking forward to seeing more details. Quote
LEGO Train 12 Volts Posted February 2, 2015 Posted February 2, 2015 Hey this project is absolutely brilliant! I did not know this steam locomotive but I immediately fell in love with its uniqueness. As always I have to admit that you've made an excellent job of modeling Barduck ...the cab is simply magnificent! Quote
Barduck Posted February 3, 2015 Author Posted February 3, 2015 a lot of the inspiration for this train came from Cooper's wonderfull model https://www.flickr.c...@N07/4500879959 though I changed a whole lot of things to his design (basicly, I was looking at an O-scale model on Brasstrains, started from there and then compared my solutions to the ones Cooper did) The real train: Quote
detjensrobert Posted February 3, 2015 Posted February 3, 2015 That shot is from the Sacramento Railroad Museum ~30 miles (~50 kms) from where I live over here in California USA! :laugh: Quote
LEGO Train 12 Volts Posted February 3, 2015 Posted February 3, 2015 In my opinion your model is better than Cooper's work ...you've implemented more details and the cab looks perfect! Quote
v6TransAM Posted February 3, 2015 Posted February 3, 2015 Wow! Definitely got the cab forward part down and looking good. Now u will need some very large tunnels to run her thru Quote
dr_spock Posted February 3, 2015 Posted February 3, 2015 Looking forward to seeing this in real bricks. It's a unique tunnel steam locomotive. Helps that it burns oil instead of coal, if I recall. Quote
Redimus Posted February 3, 2015 Posted February 3, 2015 Helps that it burns oil instead of coal, if I recall. It would have to, you'd need one hell of a mechanical stoker to get coal from the tender (at the 'back' of that extremely long boiler) to the firebox (at the 'front')! Quote
jtlan Posted February 3, 2015 Posted February 3, 2015 @barduck, I'll note that SP #4294 is an AC-12, which is slightly different from the AC-7 you're modeling. This is an AC-7: Note minor differences, such as the absence of an air horn on the front of the cab. I'll note that in both your and Cooper's renditions, the silver section on the cab appears to be slightly too tall, but I'd need an engineering drawing to verify. The tender also appears to be a bit too tall relative to the locomotive, although it could be a perspective problem in the rendering. It would have to, you'd need one hell of a mechanical stoker to get coal from the tender (at the 'back' of that extremely long boiler) to the firebox (at the 'front')! Or you can cram coal in every available space, as was done on the GR670 (the version I modeled has a giant coal chute and bunkers behind the cab). Quote
Redimus Posted February 4, 2015 Posted February 4, 2015 lol, good luck fueling the monster he's modelling by just chucking coal in any available space! Quote
jtlan Posted February 4, 2015 Posted February 4, 2015 lol, good luck fueling the monster he's modelling by just chucking coal in any available space! I always wondered why it wasn't possible to push the tender in front of the locomotive. Granted, it would block the view somewhat, but you could make a lower version (sort of like a slug). I've heard it's not safe to push tenders, but locomotives such as the DRB Class 50 were capable of high-speed operation in reverse, so that's clearly not universally true... Quote
Redimus Posted February 4, 2015 Posted February 4, 2015 It's not unheard of in the UK, although generally on slower routes. I think it's mostly a visibility case, as large locos tend to have tenders that fully fill the loading gauge (although the huge megablocks if narrower boilers were hardly conducive to visibility too). Quote
Barduck Posted February 4, 2015 Author Posted February 4, 2015 (edited) @barduck, I'll note that SP #4294 is an AC-12, which is slightly different from the AC-7 you're modeling. This is an AC-7: Note minor differences, such as the absence of an air horn on the front of the cab. I'll note that in both your and Cooper's renditions, the silver section on the cab appears to be slightly too tall, but I'd need an engineering drawing to verify. The tender also appears to be a bit too tall relative to the locomotive, although it could be a perspective problem in the rendering. Or you can cram coal in every available space, as was done on the GR670 (the version I modeled has a giant coal chute and bunkers behind the cab). When I googled her that was the picture I got that stood out. The differences are luckely minor so no problem there. As for the gray part, I intend to put a black sticker on the bottom part, I knew it was a bit to big but a half curve slope simply doesn't excist . And yes the tender is a tiny bit to high, compromise for the PF recievers and 2 battery packs that need to go in there (powering her with 4 L motors) In my opinion your model is better than Cooper's work ...you've implemented more details and the cab looks perfect! Thank you but personaly I don't think so. We've used different solutions for some problems, I'd say we have decent competitors Edited February 4, 2015 by Barduck Quote
Barduck Posted February 7, 2015 Author Posted February 7, 2015 I'd say she looks pretty sweet, haven't been able to actually test her yet though. a little tape at the bottom of the slopes on the nose does wonders Southern Pacific 4-8-8-2 AC-7 Cab Forward by Barduck12, on Flickr Quote
LEGO Train 12 Volts Posted February 8, 2015 Posted February 8, 2015 I like all those tubes! In real bricks is even more beautiful than your first CAD picture! Quote
Vliebricker Posted February 10, 2015 Posted February 10, 2015 Wow, great looking model! I didn't know this type of steamloc at all. Curious. And how does it run with some coaches? And what about riding through the lego-rail curves? Quote
IowaHawkeye13 Posted July 6, 2020 Posted July 6, 2020 (edited) The Southern Pacific Cab Forward is my favorite locomotive. Are you willing to sell the instructions? Edited July 8, 2020 by IowaHawkeye13 Quote
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