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  1. Hello guys, this is a kinda last minute octraintober submission: a beurer "rangiertraktor" first off all, a little bit of backstory to the prototype: these where small shunting vehicles built by the Maschinen- und Armaturenfabrik vorm. H. Breuer & Co and where later licenced to be produced by many companys. they where used to carry around single or small groups of wagons with weights of up to 80-500 tons. the first iteration the type I had a completely open construction and a whopping 10 HP (no this is not a typo) here is a sketching of one: the type II had 28 HP. sadly i havent found a sketching or picture of this one the type III had a real cockpit for the operator to stand on and operate the machine. it looked like this and had 40HP: the type IV and V looked basically identical except that the type V had 80 HP without further ado here are the pics: there isnt much of a wip story here as the construction of the model only took me like 20 minutes. the renders took the same time as building the model the second one shows how the wagons attached to the thing. they where raised by this pin that sticks up and the weight of the wagons rested on the tractor thus giving it huge ammounts of traction to pull up to 500 tons edot: changed the position of the windows. made two renders the one where it shows how the wagons attach where made quick and dirty with pov-ray. here is the second render: hope you like this last minute submission! here is the link to the studio file for anyone to build and have fun with! edit: now i have an update for you guys. what is better than a small lego train model? a motorized lego train model! this uses a modified cheap "tower pro sg90" servo as its motor. the servo has been modified in such a way that it basically works like a normal brushed dc motor. i have removed the servo control board and the stops preventing the servo from rotating more than 180 degree. there are several tutorials available online on how to do this. the second modification the servo got was removing the mounting points of it at the top to make it smaller. the servo fits into the model like this: the drivetrain consists of a small white lego rubber band which drives one of the trainwheels directly (no need for gearing down as the servo has internal gearing already which is sufficient). the second pulley is one of the servos attachments just with the arms cutoff and made flush with the rest of the center hub). here is the whole thing complete with the drivers cab: i changed some of the details due to my parts library and space constraints with the taller base but overall it is the same model just different colors (it is a very old unit so a bit of rust is also present ). the drivers cab just fits loosley onto the model as the servo doesnt really fit into the lego geometry height wise and i didnt want to make the model any taller so thats how it is. it fits quite snugly though so no problem there. and finally there is a video so you guys can see it running: hope you like this upgrade and as always the models files can be found in the link in my signature for anyone wishing to recreate this little model.
  2. My model is basically done so here is the summary of the progess/background info about the prototype for it. First off all i will do the summary: Summary: It all started when @Paperinik77pk started his topic about the e69 "spielzeug" locomotive. i was thinking to make a really nice e69 locomotive myself. I did one as a kid but it obviously wouldnt hold up to moy standarts today. i always liked the e69 because it kinda looked like the crocodile but wasnt as big and i really like small locomotives. i then posted my thoughts about building the e69 in a more "realistic" fashion in the topic that @Paperinik77pk was posting his progress in and he really encouraged me to participate in this competition. I choose the 005 like him because of all of the locos in this "baureihe" this one looked the best to me. my first step was designing the basic shape of the loco: this is the first screenshot i took of the design. first model had the hoods non inset compared to the body. the whole loco was 6w in this step i tried to make the hoods 5w inorder to create the offset between the cab and the hoods fom the prototype but this resulted in an ugly gap because the top half of the hoods is completely snotted. my next steps where primarily aimed at reducing the gaps: as you can see here i was able to eliminate the gaps completely in this one. next up where improving the looks of the headlights and adding the vents: this further complicated the snot design. in this step i also added some details to the undercarrige of the model like improved looks of the snowploghs and the sanding boxes. next step of the way was by far the most time consuming and frustrating one: i dint post all the iterations i went through but i can tell you there where many! this one is one of the many iterations i went through: this one was tantalizingly close just a gap of 1/4 plate but still a gap. for the next design i finally caved in and stopped trying to make the rear hood half snotted which made things work: inbetween the two i also posted a pic of the last attempt and the model i did all those years ago as a kid: really shows my moccing skills improvement! anyways next model was all about detail and another livery: i added the earthing pole for the overhead line and some more details to the two liveries. here is the other side with some sort of radiator in the next iteration i added the tan stripe to the red one: next step was improving the looks of the pantograph and making it look more like the "einheitsstromabnehmer" this is the first render of the red livery: @zephyr1934 encouraged me to do a dark red one so here it is: these are the final renders for this model. I had to change some colors due to them beeing not available: rear view: As i am done with the model here is the file for all the versions: History of the prototype: Here is a quick summary of the history of this loco and her sisters. All five locos where bought by the LAG (localbahn aktien gesellschaft) and where used on the small branch line from murnau to oberammergau. They where given female nicknames. the line was first electrified in 1904 with a single phase electrical system with the voltage of 5.5kv and a frequency of 16 Hz. the frequency was later increased to 16 2/3 Hz to make conversion from the national grid with its frequency of 50 Hz easier. Later, in 1954/55 the voltage was raised to 15kv to match the rail overhead voltage in the rest of germany. Locos: E69 001 (LAG 1, Katharina) this was the first loco purchased and was notably the first single phase electric locomotive in germany. it had a very weird pantograph with two lyra style arms touching the overhead line. this one is also the only one thats not able to run today due to the increased voltage where its drive motors and electrical systems would have to have been replaced which was never done. it now resides in the lokwelt in freilassing right at the border to austria. i actually have seen this one in person already. e69 002/e69 003 (LAG 2, Pauline/LAG 3, Hermine) the next locos purchased by the lag to cope with the increase in traffic for the "passionsspiele" in oberammergau where the e69 002 and the e 69 003. these where basically identical except for their color. the 002 was green and the 003 was red. the 003 was also the oldest regular running locomotive of the DB when it went out of service in 1982. e69 002 e 69 003 e 69 004 (LAG 4, Johanna): the LAG 4 has a bit of a weird history. it originally was built by combining one half of the 3 phase trial locomotive produced by siemes for the trials at marienfelde-zossen and a new electrical system to form a quite odd looking locomotive with a cab in the rear of the loco. the other half was used to create this industrial shunter for siemens in berlin which gives you an idea what it looked like as no picture of it in this configuration exists: i it is the right one with the cab on one side. later it was converted to look more like the others with a central cab but higher hoods to acomodate the bigger electrical systems needed for more horsepower: the loco now looks like this and isnt able to drive sadly. e69 005 (LAG 5, Adolphine) this one is the one i built and is by far the most powerful one of them all with over 820hp and a design that looked bulkier. it at first had a green livery but this was later changed to red with a tan or yellow stripe depending on the picture you look at. this loco was also a longer than the others and was one of the first to include a modern safety system by default. here is what she looks like today: she is all up and running today and occasionally pulls historic trains. edit: here is some further background info from a german book about locomotives: