mdq
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Posts: 128
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Post by mdq on Sept 4, 2022 18:58:43 GMT -8
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Post by talltim on Sept 5, 2022 4:56:21 GMT -8
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Post by nsfantodd on Sept 5, 2022 6:54:54 GMT -8
That and no visible screw holding the truck on. For what I can tell the trucks look really nice! Unfortunately they they don't appear to have code 88 wheelsets. Hopefully a semiscale option will be available.
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Post by edwardsutorik on Sept 5, 2022 7:02:49 GMT -8
Which kinda leaves some kind of snap-in split pin attachment.
Ed
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Post by grabirons on Sept 5, 2022 8:20:21 GMT -8
I see what you have circled but it seems to have been missed, Not what word is cast into the underside of those trucks, but the fact you can visibly see the spring group on the inside of the trucks, right?! As for the truck screws, maybe there is a highly magnetic pin that keeps the trucks "in place" that won't disrupt coupler operation for those who do that sorta thing.
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Post by edwardsutorik on Sept 5, 2022 8:45:14 GMT -8
Snap-in split pin or highly magnetic pin. Wonder which would cost more to do.
With the springs showing on the inside, it implies the sideframes are cast separately from the truck bolster. Note that it isn't just the springs, but the lower spring pedestal, too.
Since the truck bolster is (I think) cast separately, they could cast a shorter one to go with the Code 88 wheels. This would eliminate a failing of just dropping the narrower wheels in: an even bigger gap between the outer wheel face and the truck sideframe than is prototype.
The typical distance between the wheel face and the inside of the sideframe is 3" (on the prototype). That is .034" or, for you fraction guys, 1/32". The gap shown in the subject photo looks to be a lot more than that. Replace the wheels with Code 88, and the gap grows. And looks more wrong.
Here's an opportunity to make the truck match the wheels!
These are potentially a new phase of HO truck design.
Ed
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Post by sknorcal on Sept 5, 2022 11:30:14 GMT -8
There are several things about this truck design that jump out as new, different or interesting. 1. Inside spring detail (circled in picture.) 2. No visible mounting screw. 3. Detailed brake beams WITH brake levers. 4. Axles with rotating bearing caps protrude THROUGH sideframes as opposed to snapping in. I really like the look, but how do they perform? I would be very interested in seeing a video so that we can judge rolling qualities.
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Post by edwardsutorik on Sept 5, 2022 11:59:36 GMT -8
"No visible mounting screw" is only meaningful when the car is upside down or on its side. So, aside from looking good when you have a major derailment, I'm not seeing the importance.
Actually, I see it as a negative. Almost every freight car I've got has screw mounted trucks. If I want to put a pair of THESE on one of them, I can't just unscrew the old one and attach the new one. Or so it appears at the moment.
One thing I WOULD like to see on these trucks is side bearings on the truck bolster. They've been long missing on most of our trucks, and I have use for them.
Ed
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Post by talltim on Sept 5, 2022 12:00:59 GMT -8
I think the inner side of the truck side frame is part of the bolster, with the outside a separate part, but I could be wrong. On FB Lorne dropped a hint about a different axle mounting method. My immediate thought was roller bearings, but again I’m probably wrong
I’m surprised only one person has picked up on the Aurora name
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Post by edwardsutorik on Sept 5, 2022 12:26:35 GMT -8
I think the inner side of the truck side frame is part of the bolster, with the outside a separate part, but I could be wrong. Squintin' a little closer, I can see how that might be true. So then the springs would be cast with the outer piece, and "snapped" onto the inner. Yup. Mehbe. That might mess up my plan to have a smaller truck bolster for use with Code 88 wheels, though. Real ones? I REALLY don't see it. You don't want just roller bearings, microscopic. You want ones that work at least as well as what we have now, and I expect that would involve that expense problem. That's easy. I tried reading it, and couldn't figure out what it might say--blurry, and all that. Now that you have used the magic word, I can see that fitting nicely. Ed
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Post by Mr. Trainiac on Sept 5, 2022 13:28:13 GMT -8
The Aurora trucks make sense, and in some of the photos on Facebook, you can see the top of a Chinese diesel locomotive on the other track. This is a past model that Aurora has produced for the Chinese market. Aurora and OVR are probably using the same factory, or OVR subcontracted Aurora for this model. In either case, this is a good sign. The SD60s look nice, and the shipping containers with working doors were cool models too. They are a capable company, so hopefully the results and QC on this model are better than we have seen from others lately.
If there are Aurora freight car trucks, it means we will be seeing more models from them in the future. This could be an indication of un-announced and in-progress models from them.
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Post by sd40dash2 on Sept 5, 2022 13:47:35 GMT -8
...no visible screw holding the truck on.
Please no. It took decades for the hobby to finally settle on the 2-56 truck mounting screw. Don't mess with it!
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Post by sknorcal on Sept 5, 2022 13:58:56 GMT -8
The Aurora trucks make sense, and in some of the photos on Facebook, you can see the top of a Chinese diesel locomotive on the other track. This is a past model that Aurora has produced for the Chinese market. Aurora and OVR are probably using the same factory, or OVR subcontracted Aurora for this model. In either case, this is a good sign. The SD60s look nice, and the shipping containers with working doors were cool models too. They are a capable company, so hopefully the results and QC on this model are better than we have seen from others lately. If there are Aurora freight car trucks, it means we will be seeing more models from them in the future. This could be an indication of un-announced and in-progress models from them. Just checked the Aurora FB page, and they have posted images of 3D CAD for a Gunderson 6276 boxcar (back on Aug. 16.) The post states "More details available soon..." I suspect that Aurora is producing the 6400 hoppers for Otter Valley.
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Post by edwardsutorik on Sept 5, 2022 14:20:10 GMT -8
...no visible screw holding the truck on. Please no. It took decades for the hobby to finally settle on the 2-56 truck mounting screw. Don't mess with it!
It was a Standard in May 1945. It was reclassified as an RP in July 1957 (RP 23). "Note: Specifications on this sheet are designed to permit easy interchange of trucks between cars." The NMRA was only 10 years old at the time, so I'm not sure I'd agree that it took "decades" to get there. Ed
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Post by 12bridge on Sept 5, 2022 14:30:04 GMT -8
Could have fooled me saying the 2-56 was a standard. I think the vast portion of screws now are self tapping plastic screws.
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Post by edwardsutorik on Sept 5, 2022 15:08:05 GMT -8
That was IF you wanted to use a machine screw.
There ARE self-tapping 2-56 screws, but I think you're talking about what are essentially sheet metal screws.
The Standard also mentioned using #2 wood screws.
And the Standard turned into an RP, which sorta means you can do anything you want. Cause it ain't a REAL standard.
Ed
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Post by markfj on Sept 5, 2022 15:32:19 GMT -8
It could be that the bottom of the bolster is a press fit or snaps on to the upper half and the screw is hidden. Why would this company design a truck that can't be used on other manufacturer's cars? That would be a loss of potential revenue for no good reason.
Thanks, Mark
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Post by edwardsutorik on Sept 5, 2022 16:03:30 GMT -8
True, it could be a variant of the "dress snap" idea, similar to what Central Valley did.
I am certainly looking forward to these cars and trucks.
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Post by dstark on Sept 5, 2022 17:47:41 GMT -8
It's baffling that people are calling this a hopper... it's a gondola obviously given there are to bottom outlets. The NSC 6400 hopper is a plastic pellet car that's been around a few decades, slightly larger than the 6200cf car that Walthers produces.
It was asked why produce this car (NSC 6400 gondola) ? Modern sells, an Athearn rep said this was their most requested car.
Doug Stark
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Post by bncascadegreen on Sept 8, 2022 13:06:52 GMT -8
It's baffling that people are calling this a hopper... it's a gondola obviously given there are to bottom outlets. The NSC 6400 hopper is a plastic pellet car that's been around a few decades, slightly larger than the 6200cf car that Walthers produces. It was asked why produce this car (NSC 6400 gondola) ? Modern sells, an Athearn rep said this was their most requested car. Doug Stark And yet we still wait for the BNSF reefer (big one) , New NSC three unit and BNSF Stack cars, NSC gons, gons from other manufacturers
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Post by keiffer on Sept 8, 2022 16:23:30 GMT -8
I believe Aurora is doing one of the NSC gons also.
Just checked it’s the NSC 3650, “railgon” which is currently in production.
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Post by cemr5396 on Sept 8, 2022 16:42:31 GMT -8
I believe Aurora is doing one of the NSC gons also. Just checked it’s the NSC 3650, “railgon” which is currently in production. they are? there is nothing on their website about them.
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Post by keiffer on Sept 8, 2022 18:06:55 GMT -8
For some reason i cant get the photo to attach, but i took a screen shot from somewhere (facebook?) showed the gons in production and the Gunderson boxcar in design.
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cvacr
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Post by cvacr on Sept 14, 2022 7:55:46 GMT -8
"No visible mounting screw" is only meaningful when the car is upside down or on its side. So, aside from looking good when you have a major derailment, I'm not seeing the importance. Actually, I see it as a negative. Almost every freight car I've got has screw mounted trucks. If I want to put a pair of THESE on one of them, I can't just unscrew the old one and attach the new one. Or so it appears at the moment. It has normal screw mounted trucks. The bottom of the truck bolster is a little clip-in cover that hides the screw. Unnecessary part maybe, but still a standard install, not to worry. (I was at their manufacturer event on the weekend, and Lorne showed popping off that little clip on cover to reveal the screw.)
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cvacr
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Post by cvacr on Sept 14, 2022 8:04:27 GMT -8
I believe Aurora is doing one of the NSC gons also. Just checked it’s the NSC 3650, “railgon” which is currently in production. they are? there is nothing on their website about them. Yes, their table showed posters for a modern Gunderson 50' (FBOX style) boxcar and NSC 66' railgon (GNTX).
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Post by grabirons on Sept 14, 2022 17:12:11 GMT -8
Was aurora a known manufacturer before they announced the sd60f? Did they manufacturer products for anyone else under a different or the same name,Or are they a completely new company? They make what looks like excellent products, for a new guy that's pretty good. Surely, they have previous experience before startng this venture. I hope they do lots of freight cars, it kinda looks that way right now.
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Post by sd40dash2 on Sept 14, 2022 17:28:06 GMT -8
It has normal screw mounted trucks. The bottom of the truck bolster is a little clip-in cover that hides the screw. Unnecessary part maybe, but still a standard install, not to worry. (I was at their manufacturer event on the weekend, and Lorne showed popping off that little clip on cover to reveal the screw.)
Great news, thanks for the recon!
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Post by Mr. Trainiac on Sept 14, 2022 17:44:25 GMT -8
Was aurora a known manufacturer before they announced the sd60f? Did they manufacturer products for anyone else under a different or the same name,Or are they a completely new company? They make what looks like excellent products, for a new guy that's pretty good. Surely, they have previous experience before startng this venture. I hope they do lots of freight cars, it kinda looks that way right now. I think they were a Chinese model company before entering the North American model railroad world. They have some of these models on their website in case you wanted to buy some international locomotives. Their domestic Chinese models look pretty nice, and their Facebook page has some good photos if you scroll down.
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Post by cajonfun on Oct 27, 2022 14:22:35 GMT -8
Entire first run is in production, will expected arrival date mid Feb 2023. Here is a photo from a few weeks back of paint colours. ![](https://www.facebook.com/photo/?fbid=538329984964284&set=pcb.538330234964259) ![](https://www.facebook.com/photo/?fbid=538329984964284&set=pcb.538330234964259)
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Post by sd40dash2 on Apr 4, 2023 4:32:17 GMT -8
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