Locomotive S160 (for N gauge motor bogies

prusaprinters

<p>I saw and liked this big loco that was made in America for use in Europe during WW2. This is a work in progress, but I thought someone might like to see it as it grows. I will hopefully build the complete train as one STL for those that want a model only, and simultaneously post the separate files for assembly into a working thing, if I can figure out how to articulate it properly.</p> <p>This a work in progress! Any help and positive suggestions are welcomed.</p> <p>I will post as I make more of it, and possibly change when i find a mistake or need to adjust.<br/> Be aware that it may be altered as it develops. So it may be a good idea to read all of this before you start downloading, as you will probably not need all of these files by the time I have "perfected" it. Hopefully my attempts may help someone do similar with less mistakes than I will find.</p> <p>6/2/2020<br/> I sorted the "rigging/hydraulics" of the main body and had to adjust the gubbings that goes under the cab floor so that it fits the new reduced space. STLs. are now added.<br/> I started the tender by trying to replicate the dimensions of the Tomytec powered double bogy that I want to use to drive it via the tender. This may change when I eventually get the bogies.</p> <p>more later......eg. another piston pot is needed on the front boiler section, and the tender wheels part you see will become the void in the tender itself, to accept the motor bogy when I get it, not to mention finding a way to allow a 2.8.0. loco to go around my tight radius track!</p> <p>7/2/2020<br/> I have changed the screen shots from Tinkercad to the latest complete loco, and added an STL. of it should you wish to print it as a non working model.</p> <p>In the mean time here is a bit of info re. this loco for those that care about that kind of stuff:-</p> <p>"The United States Army Transportation Corps S160 Class is a class of 2-8-0 Consolidation steam locomotive designed for use in Europe during World War II for heavy freight work. A total of 2,120 were built and they worked on railroads across the world, including Africa, Asia, all of Europe and South America." (Courtesy of Wikipedia)</p> <p>I have added the tender, (screen shots, and STL.), but this still has some finessing to be done to it. Bumpers added but unfortunately not exactly level! I may or may not do something about this.</p> <p>9/2/2020<br/> In the first step to solve the problem of tight curves and fixed sets of wheels, I have articulated the front bogie. New STLs are uploaded plus a screen shot to explain my process.</p> <p>10/2/2020<br/> I have added another component. a coupler. thanks to "Replacement Coupler for Playmobil Trains, by af12689 Oct 30, 2017", which I have remixed and scaled down for N gauge use. I will be adding these in all the right places soon.(all done)</p> <p>I have been unhappy with the smoke stack, a bit too big, so I have altered it. Screen shots and STL are added but I have left the old ones for those that may have liked it that way.</p> <p>The engine driver and stoker are now present courtesy of someone else for the figures-I will credit them when I can find where I got them.- (it was "Scale model people<br/> by sshah217 Feb 1, 2015").</p> <p>Sadly on doing this I discovered that I had made the cabin windows far too tall/deep. these have now been corrected. (I did say there would be changes!), but the original is still there.</p> <p>The next repair will be trying to get bumpers and couplers level, so be prepared for more alterations. It might be finished when i do this, but when the wheels and bogies arrive? --- well!</p> <p>11/2/2020<br/> The wheels for the front bogie have arrived so i have made a more accurate version of them for sizing the rest around them. The wheels I intend to fit there, finally are NR101 from peco. I haven't been able to find wheels big enough for the main drive wheels, so am hoping they will print successfully in N scale</p> <p>12/2/2020<br/> Apart from needing to hone my skills with the clippers, I discovered some weaknesses in my designs. I have reinforced the ladders and the front bogie and unfortunately have had to make the couplers much larger. I seem to have over-estimated the abilities of the SLA/LCD printer! the new STLs are posted but I have left the originals for those that work in larger, more sensible, scales.</p> <p>17/02/2020<br/> I have been trying to print all the "finished" designs using Chitubox to orientate and slice, but have come up against a (so far) unresolved problem. The file refuses to be read by my elegoo mars printer despite other files, copied at the same time, printing fine. I have redone the slicing and saving/copying a few times to no avail.</p> <p>The latest theory (of mine) is that the file may be too big (404 MB). So my next plan is to put less on the plate and print the component parts separately.</p> <p>So, sorry, there is going to be a bit of delay before I can boast success/tell you of my latest failure/challenge.</p> <p>24/02/2020<br/> I believe I have finished!</p> <p>5 x STLs and a screen shot dated today (24/02/2020) are, hopefully, the last uploads.</p> <p>I have had to devise a way that the wheels will spin freely and adjust to corners. This involves a bushing made from 4mm plastic tubing, usually meant for drain pipes and the like, cut into 4mm lengths and split with a removal of a 0.5mm slice. I have included a screen shot showing the front bogie assembly using this solution. The other larger drive wheels will need this treatment. The reasons being, the resin does not freely glide against itself or the Peco wheels, a means of holding the axles in place was needed, and this system allows the wheels to drift a little in their housings which is necessary when a long line of wheels go round corners if they are not on bogies. This also necessitated making the axles of the large drive wheels narrower. (file now updated).</p> <p>I had to increase the size of the couplings yet again as they were far too delicate and welded themselves together.</p> <p>In order to do all this the majority of the project had to have a fair few alterations, so all the files have been updated accordingly. As always I have left the old ones in case someone is in the middle of using them. I will remove all but finished ones in a while to save clutter. I am sure the Prusaprinter people will be grateful for that!</p> <p>When I have successfully created the physical thing and painted and motorised it I will upload pictures and video.</p> <p>To all or any that have followed this project thus far, thank-you for you patience!</p> <p>I apologise for not being able to keep my word re. making a one-off complete file for those that just want a stationary model. The files turned out to be far too big to put together in Tinkercad. A couple of them were touch and go on their own! I will continue to find a way - there is always a way!</p> <p>27/02/2020<br/> I hadn't finished.</p> <p>After a print of all the parts, successfully printed, I am now finding all the things that didn't fit, got stuck together, and were far too delicate to survive construction and painting.</p> <p>So, I have reinforced the couplings, raised the couplings on the tender to match those on the loco, joined the boiler and loco body together, made the wheels a little bigger and put a slight taper on them to reduce the need for so many supports.</p> <p>I have also added a little more in the way of detail to the loco in the manner of pipes etc. I have also put a big hole all the way through the loco to reduce suction when printing on the Elegoo Mars, finessed the couplings so that they have less tendency to stick themselves together when printed in N scale.</p> <p>I have posted the new files and taken out a few that seemed redundant now. I just hope that Thingiverse's rendering keeps up. The STLs should be up to date at least (that bit seems to be quite consistent), but they don't seem to make it to the viewer at the moment, never mind the Thingiview option. I hope they fix this soon.</p> <p>I am still working on an STL of the complete thing, but don't hold your breath.</p> <p>28/02/2020<br/> I might have finished.</p> <p>There is now a new STL of the complete thing, loco, tender, wheels and all, for those that want to print it all in one. (The trick was ...If you have two windows open with Tinkercad open in both, you can save in one and, because its all going on in the ether, the saved item can be opened in the other window, thus saving you having to close and open all the time to amalgamate your bits, simples!)</p> <p>Thingiverse, being slow at present, has failed to show the new STLs, so I have put in a screen shot of the complete train to show it off.</p> <p>If you have difficulties message me and I will try to help, if I can.</p> <p>I just have to figure out the best way to print. I will include Chitubox files when and if I manage to slice it successfully. If anybody beats me to it. for an SLA/LCD printer, please share you files for us all. Thank-you.</p> <p>Print Settings<br/> Printer:<br/> elegoo mars</p> <p>Infill:<br/> too small for infills to matter</p> <p>Notes:<br/> not finished or printed yet. 28/02/2020. Update: I think I have finished the design stage I just have to figure out the best way to print. I will include Chitubox files when and if I manage to slice it successfully. If anybody beats me to it. for an SLA printer, please share you files for us all. Thankyou.</p> <p>How I Designed This<br/> From photos and information from t'internet<br/> Cant afford to buy too many locos for my N gauge layout so I thought I would have a go at using 3D printing and motorised bogies to make my own using tinkercad, chitubox and elegoo mars printer. I have yet to discover if the quality and detail is good enough to do it seriously but it is worth a shot!</p>