KirTech LAB

Thanks a lot! I was building it about three months. The process was started in November. I think I had no 42055 photos at that time. I wanted to construct this excavator a long time ago but I had no parts and skill. But now I have :)

The topic is updated with short review: Hello all! Today I want to show the small copy of the Soviet Bucket Wheel Excavator ER-1250. This mining machine was designed in the middle of the XX century and it’s a real monster! The excavator is more than 48 meters long and it is about 8-storey building high. Total weight – almost 700 tons. These machines are used for stripping and for mining. You can see the original here: https://yandex.ru/im...ch?text=ЭР-1250 I considered two possible scales: the technic-figure scale and the mini-figure scale. The model in the first scale would be more than two meters long so I’ve chosen the second one. So the scale is 1 : 41. Let’s take a look at my model: The dimensions: 123x42x56 cm, total weight – 7,8 kg. The model is really huge! My excavator has eight remote controlled functions: - Separate left and right track drive (4x XL-motors). All the bogies have an equalizing beam suspension; - Three-sixty superstructure rotation (2x M-motors), the chassis and the superstructure can be separated very easy; - Unloading conveyor rotation (2x M-motors), the range isn’t too large but the turning speed is equal to the superstructure rotation speed so we can lock the unloading point; - Main boom elevation angle (1x L-motor with polyspast); - Unloading height changing (1x M-motor with polyspast); - Unloading mechanism rotation (1x Micro-motor); - Unloading mechanism flap (1x Micro-motor). This mechanism is used for effective loading of trains. Also the model has two motorized functions with manual control: - Unloading conveyor (1x M-motor); - Main conveyor with bucket wheel (1x M-motor). So the model has 14 motors, 6 IR receivers, 2 battery boxes and 2 LiPos. Like in the real machines the unloading conveyor is faster than the main one. I’ve tested the excavator with 3L pins and they pass all the way from the buckets (gravitational unloading) to the unloading mechanism. Let’s watch how it works: I’ve paid special attention to the details for comfortable working of my mini-figures. We have three operator cabs, the crane for mounting and local repair, many stairs and access to all the motors and reducers. More photos you can find here: https://flickr.com/photos/141718063@N06/albums/72157669300390701 Thanks for watching! I hope you like it :)

Cool idea!!!

Is it powered with S-brick? Can you post a link to the gallery?

Incredible model! And the light are awesome. It's a true masterpiece!

5: 10 3: 6 2: 4 1: 3 13: 2 17: 1

Wow! I didn't known all the possibilities of my model )))) I'm glad you've constructed it! Can I use your photos on other forums?

Very impressive! And video is amazing!

You've discovered it! :)

I've done one more movie with my WAR RIG - it's a winter Ice Drift. Enjoy :)

You should switch the modes more precisely - when the first switch is On the other one should be Off. It's the reason why I want to incorporate S-brick here.

One of the motors should be connected through polarity switch - so you'll reverse one of them.

Thanks for your suggestions! I had no deals with 3D printing - what will be the life time of such part under ~3000 rpm ?

Hello all! I haven't found any information about buggy-motor disassembling but if it was discussed here I ask Jim to delete this topic. I had a problems with one buggy motor for a long time. Recently I had a few experiments with electronics and this motor worked very badly: sometimes output shafts stayed static when the inner motor worked. So I’ve decided to disassemble it. I hope this video will be absolutely useless for you and your buggy-motors will be Ok :) Use the subtitles! Thanks for watchimg!

Thanks a lot! bricklink and one more internet-shop in Russia

Thanks for comments! Some fragments with working steering mechanism are speeded up. I use two large actuators directly connected to M-motors. PS: moving scenes are at the actual speed.

I think the same ))))))))

Nice model! Huge bucket looks very brutal here!

Hello all! I’ve decided to create this model less than two weeks ago. I was inspired by trans-orange parts from the 70317 Nexo Knights set and my model is stylized as old very cool series of 1993 year – Ice Planet. The model is 73 cm long. The functions: moving (three buggy-motors powered with two S-Bricks), steering (two M-motors, articulated chassis), suspension (15 supporting sprockets) and plasma accelerators. Video demonstration: To say the truth the external design was my main target so let’s take a look at the photos: Thanks for watching! I hope you like it. What do you think – is it really Ice Planet style? PS: Unfortunately I have no Space sets of 1993 year.

I've added the bottom view to the main post!

I have 42038 set but it is disassembled now; but I know that in 70317 set these rubbers work very well so I think in technic sets it will be Ok too.

6139223

Thanks for your comment! You are right the suspension has rather small range but our competition shows that it's not the key feature :)

Hello all! Today I want to show you my new MOC. I’ve started to construct this off-roader after trial competition in Moscow. It’s stylized as Dodge T-Rex 6x6 but it wasn’t a target to create precise copy. It was not too simple to create bright-green body :) There is one XL-motor for propulsion and two M-motors for steering (independent steering for front and rear wheels). I hope I’ll test it on the real track in the next competition and now let’s watch test-drive: More photos: Thanks for watching!

Wow I'm really impressed that you are constructing this model! I've disassembled my own version and it's an inexpressible feeling to see how my MOC appears in different points of our planet :) If you'll do it - you'll complete my dream about this model! Please show the result with S-brick and a control profile. It's very interesting for me!