Passenger car for OS-Railway - Fully 3D-printable railway system

thingiverse

This is an innovative passenger car designed specifically for the OS-Railway system and particularly suited for the Hectorrail 141. It's not a scale model, although it has been crafted to resemble older passenger cars used on the Swedish railway network. The length of this vehicle is crucial due to the tight track radius found in this system. The car was created with the Prusa i3 printer in mind, allowing the longest part - the body center section - to be printed at a 54-degree Z-rotation. Main track page: https://www.thingiverse.com/thing:2146361 Hectorrail locomotive: https://www.thingiverse.com/thing:2575667 Z70 locomotive: https://www.thingiverse.com/thing:2146425 Note that the RC6 cannot tow this car, as it is too long and the models are not of the same scale. Group: https://www.thingiverse.com/groups/os-railway **Hardware Needed** 8pcs ball bearings OD 6mm ID 3mm T 2,5mm 4pcs wheel shaft, carbon fiber 3mm thickness 42mm length M2 screws (or most parts can be glued). However, I recommend that the boogie sides are screwed in place so that you can remove them if the bearings need to be cleaned or adjusted. Buy long ones (around 20mm) and cut to length, the length is not critical. 2pcs M3x6 to attach the boogies to the car, this length is important if you want the screws to be hidden under the floor. 4pcs M3x8 attaches the boogie frame to the hub (2pcs for each boogie) 2pcs M3x10 for couplers **Instructions** The roof guid plate does not have a built-in tolerance to the body sides as this can vary due to print quality. You will probably need to trim the edges until it fits easily inside the small edges on the body. Its purpose is to hold the roof in place together with the lock pieces. The cover plate for the light cutout in the roof can be printed if you have a semi-transparent material. To simplify the printing process, use the prepared build plates numbered 1 - 9. They are designed to be in the order where the same color is likely to be used, for example body parts and doors in the same color. All individual parts are also included if needed, see attached zip-files. Wheels can preferably be printed in two colors, the last layer (or layers) in a bright color which greatly improves visibility and ease of placing it on the track. An attached picture shows the intended routing of cables for LED's although no LEDs are installed in the prototype at the moment of publishing. Seats are included but not installed in the prototype. If you have a multicolor printer, you can combine the seat frame and the seat insert; otherwise use the included build plate STL's and use CA (superglue) to glue them together. **Note** The car easily becomes top-heavy due to the roof pieces. If going too fast in the sharp turn radius, they easily topple over. To avoid this, weights should be mounted on the underside of the chassis to increase stability. Search for car wheel balancing weights; they are perfect for this as they normally come with double-side tape.