Dawid_Szmandra

Sure, but not in the near future.

Exactly this Thanks, after my dark age (~2007) I spent a lot of hours studying your brickshelf gallery, you were one of my authorities back then, so it's nice to hear that! Yes, the drivetrain is simple and effective, And 1 driven axle seems to be ok for flat surfaces. Hmm, I haven't even asked them yet. So stickers are currently illegal, but I'll ask them.

No, front servo is connected to front end of the beam, rear servo is connected to rear end of the beam. Axles are connected to the beam. The beam moves sideways (parallel or X-shaped) Yes, it is long actuator, but it is still much too short, so the boom raising angle is too low.

Here is the beam. Nothing special to reinforce it, but it is quite strong for bending .

Hi, I'd like to present my latest project, the Liebherr LTM 1250-5.1. Some people will probably be bored because it is almost the same crane again, but maybe it will interest someone. LEGO Liebherr LTM 1250-5.1 by Dawid Szmandra, on Flickr The project began with a new steering control concept that uses two servos to steer a long beam along the vehicle. The turn of each axle is connected to it and by moving it in parallel, all the wheels turn by the same angle, moving the beam to the left on front and to the right at the rear, the wheels will turn respectively. This allows the individual axles to turn by different angles with normal steering and the same angle with crab steering. it is also very easy to use, because we only have two servos and by changing the polarity of one of them (with the button on the SBrick profile) we change the steering mode between crab/normal. By controlling one servo, you can also turn only the front axles, or only the rear axles (in real cranes there are also such steering modes). I don't know if I have described it clearly, but I hope so. ? The effect is best seen in the video. Steering + drive is made as a separate module for easier build and can be seen here: LTM 1250-5.1 by Dawid Szmandra, on Flickr The rest of the model is rather standard. 7 motors, 4597 parts, 3 section boom with a third section moved by a string. I tried to make the model as simple to build as possible, therefore it is very modular, with a limited number of illegal techniques and weak connections. It should be simpler and nicer to build than the previous LTM 1070. LEGO Liebherr LTM 1250-5.1 by Dawid Szmandra, on Flickr Some sample pages from the manual: Flickr: https://flic.kr/s/aHsmSgNcHk Instructions: https://szmandracranes.e-junkie.com/ Instruction om rebrickable: https://rebrickable.com/mocs/MOC-57421/Dawid_Szmandra/liebherr-ltm-1250-51

Hi, I'm really happy to present you my latest project, the Liebherr LTM 1070-4.2. Liebherr LTM 1070-4.2 by Dawid Szmandra, on Flickr I've never been a fan of making instructions, but some people asked me for instructions for my LTM 1750 and LR 11000, Bricklink also released a great tool, Stud.io 2.0, where you can do almost anything, so I decided to try my hand here. This is my third version of this crane, the previous ones I made in 2012 and 2013. The current one was created from scratch, and from the beginning I did it with a view to making instructions, so it is quite simple and fun to build and I tried to limit illegal techniques. But it's still much harder to build than LEGO sets, so if you want to buy instructions, keep that in mind. Liebherr LTM 1070-4.2 by Dawid Szmandra, on Flickr The model consists 2777 parts, 7 motors, 2 section boom. Quite interesting is boom erection. I used for that a core with many worm screws that move the rack connected to the second section. It takes up little space and fits in the middle of the second section. The connection to the valve is also slightly different. A pneumatic cylinder is connected to the middle outlet of Valve. To the side inlets, respectively, are connected compressor and "exhaust" with limited air flow.. This allows the boom to fall slowly. More photos: https://flic.kr/s/aHsmK8XFiA You can also like my new FB page: https://www.facebook.com/Dawid-Szmandras-Cranes-107592950745684 Instructions can be bought here: https://rebrickable.com/mocs/MOC-33014 Some screenshots below. Liebherr LTM 1070-4.2 by Dawid Szmandra, on Flickr Liebherr LTM 1070-4.2 by Dawid Szmandra, on Flickr Liebherr LTM 1070-4.2 by Dawid Szmandra, on Flickr Liebherr LTM 1070-4.2 by Dawid Szmandra, on Flickr Liebherr LTM 1070-4.2 by Dawid Szmandra, on Flickr

The best LEGO Backhoe loader.

I uploaded some WIP photos. LIebherr LR 11000 WIP by Dawid Szmandra, on Flickr LIebherr LR 11000 WIP by Dawid Szmandra, on Flickr Here you can see the LEGO turntable, which is only used to rotating and XY positioning. I initially wanted to use 4 PF Medium motors for the drive of tracks, but changed them into two EV3 Medium motors. LIebherr LR 11000 WIP by Dawid Szmandra, on Flickr Here is "core" which is connected with superstructure and bottom ring with minifigure heads. I used grease so this is not 100% LEGO in true. LIebherr LR 11000 WIP by Dawid Szmandra, on Flickr Upper ring with heads. Yellow part is placed on that. Thanks to two rings, the bearing can carry torque, not only vertical force. LIebherr LR 11000 WIP by Dawid Szmandra, on Flickr Load test with 20kg. LIebherr LR 11000 WIP by Dawid Szmandra, on Flickr Crawler drive reduction. LIebherr LR 11000 WIP by Dawid Szmandra, on Flickr LIebherr LR 11000 WIP by Dawid Szmandra, on Flickr Here is Winch 1, place for the winch 2 (sensor for measure it movement) and motor of winch 4. LIebherr LR 11000 WIP by Dawid Szmandra, on Flickr Sensor for force measurement, range 0-5kg. It allows the measurement of total crane load (just a simple dynamometer). LIebherr LR 11000 WIP by Dawid Szmandra, on Flickr Bottom. LIebherr LR 11000 WIP by Dawid Szmandra, on Flickr

Track construction is almost identical as here: I did not have any problems with them.

Thanks!

I would like to show my new project of Liebherr LR 11000. LEGO Liebherr LR 11000 by Dawid Szmandra, on Flickr Technical specifications Weight: ~27kg in max configuration (including 5 kilograms of lead ballast) Height: currently 2.5 m limited by ceiling, finally 7 or 7,5m. Max lifting capacity: ~9kg Motors:Drive: 2x EV3 Medium Motor Rotation: EV3 Medium Motor Winch 1,2,3,4,5: EV3 Large Motor Winch 6: EV3 Medium Motor LEGO Liebherr LR 11000 by Dawid Szmandra, on Flickr Next week I will add some WIP photos of turntable etc. And thanks for the invitation to share it here!