Llyod Think about the dynamics of the three cars going over the approach and crest of the hump.....the load is not secured for extreme vertical curves nor the impact of running into a string of cars

Not that the load rests on both end flat cars between 4 and 5 stake pockets from the end. As Bruce Smith mentioned, this is doubtless the preferred loading point. Tony Thompson tony@...

I think he was referring to the fact that the load is all the way left on the nearest car, and not centered on the center car. Thanks! Brian Ehni (Sent from my iPhone)

Drew, He meant end to end, not side to side 😉 and the load is definitely offset to the near end of each of the end cars. That is for good reason. The location of this load is due to several

 Hi Bil and List Members, Interesting insights there Bill! From the flat car's point of view, this would appear like it is a point load, since the flat carries the full load at the spot where

 Hi Drew, No insult taken, but perhaps I was unclear in my question... I meant to say it was not centered across THE LONG WAY. Indeed, I feel as you do, that it is properly centered across the

OK. Here is my take on why the girder was not mounted to pivot on the longitudinal center of the end flat cars… Placing the pivot point closer to the truck would result in less overhang inward on

I would like to offer to shed some light on the Jet printing Process, as it seams there is a genuine interest by this group to further understand the process. At work I manage and run both a 3D

Not to sound insulting, Claus - but I think you're seeing things. There is no way that load would remain upright unless it was perfectly centered on those flats. I've unloaded centerbeams, and two

Sorry, I just did not think of it. Lloyd Keyser

out of curiousity, why weren't these comments/questions not included, in the OP?, where they belonged, instead of creating a seperate thtead? mel perry

https://en.wikipedia.org/wiki/Classification_yard#Hump_yard "According to the PRRT&HS PRR Chronology, the first hump yard in the United States was opened May 11, 1903 as part of the Altoona Yards at

Lloyd's question raises another question. When was the first hump yard built and where? Chuck Peck

Why is there not a Do No Hump sign on this load Lloyd Keyser

Hi Brian and List Members, Thanks Brian for calling our attention to this. I find it interesting that the bridge girder is NOT mounted on the exact center of the trio of PRR class FM flat cars,

http://lists.railfan.net/erielackphoto.cgi?erielack-12-21-19/X5845.jpg From EL photo archive today. Brian Rochon

If these don't sound like very high resolution printers, remember that there are two jet nozzels per pixel - you can place either wax or body material at each location. Tom Madden

Standard, "top down" SLA parts don't need to be angled - each layer is created atop the previous one. On "bottom up" SLA printers like the Form 2 each layer is created against the surface of the resin

Hello- Two years ago I was inspired from a post by Bill Welch. I answered with a short description of the various Youngstown doors. I was asked for photos and today I added illustrations of the common

Now that we have some folks with real hands-on experience in this discussion, can anyone tell me why SLA parts are oriented at an angle? Is it an attempt to change the angle of the overhangs so they