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Found 8 results

  1. This MOC came about from my wanting of a super compact all-in-one Lego compressor, and after trying many different auto valve designs (and about a week of building), this is what I came up with: Video: Features: Air tank Automatic pressure switch M motor and 6L mini pump compressor Very compact 15 x 11 x 7 stud size Easy removal of battery box Pneumatic tube lengths: 1x 3L (2.4cm) 2x 10L (8cm) 1x 14L (11.2cm) All the pneumatic tube lengths listed above (and most of the other parts) are available in 8110-1 Unimog U400. Instructions are available on Rebrickable. The compressor uses a single 6L mini pneumatic pump, but can easily be modified for two pumps. The automatic cut-off pressure can easily be adjusted by changing the strength of the rubber bands attached to the pneumatic cylinder.
  2. Probably already done to death, but meh: pneumatics are cool. Here are two air pumps I keep on my shelf for boosting some of my models. The focus is on compact and minimal but also functional design. The first is for first-generation, single-ported pneumatics. It's just a small cylinder connected to a geared 9V motor with a pair of wheels as a crank. Next up, one for the dual-ported system. This one has two blue pumps set 180 degrees apart to smooth the airflow, driven 1:1 through 16-tooth gears by a PF XL motor.
  3. I am a fairly new member to the Lego community but have immediately been interested in LPEs. Here is my idea: Has anybody ever built or thought about powering a compressor with the engine itself. So instead of having a compressor powered by a PF motor, connect the crankshaft of the engine to it. This removes the need for the motor entirely. You will obviously need some sort of external pump to get the engine turning over as a start, similar to a starter motor. The other problem I have thought of is that it will create a never ending cycle of the engine going faster and faster and faster, assuming that the compressor can produce more air than the engine needs and vice versa. I currently do not have the resources to test this myself so any feedback would be amazing! Is this a stupid idea? Are there other things I haven't thought of? What are your thoughts on this project? Thanks!
  4. MajorAlvega

    LEGO Aquarium

    Hello. Last weekend we had our major exhibition at the North of Portugal, PLUG Braga BRInCKa 2016. Me and my wife showed this LEGO aquarium, "As Sereias e a Cidade Perdida" ("The Mermaids and the Lost City"): Water (near 15l) of course, is not LEGO. All other parts are LEGO except some nuts I used: - 2 small M3 nuts inside the shell to force it to go down when air escapes (I'm also not sure if pneumatic tubes are LEGO or not, I got them at bricklink some time ago). Those 2 nuts could probably be replaced with LEGO magnets but I don't care much for purism. - near 140 M5 nuts inside the large green bricks at the bottom to increase weight and prevents all bricks from floating around (could use boat weight bricks, have enough for that but would take lots of space The air compressor is from Sariel - two pumps generate the curtain's bubbles, one pump is for the shell movement and the fourth pump is for the pyramid. There's also a Power Functions Light - one LED inside the pyramid and the other near the shell, behind the dolphin. The idea came after Paredes de Coura Fan Event, in June, where I attended Oton Ribic "Water" presentation. All those blue slopes came from Paredes de Coura and I had to do something with them. For the exhibition I used a few drops of a sodium hypochlorite solution to prevent algae and other micro-organisms to grow. So no real fish could be shown but I used a small Nemo electro-mechanical toy fish that swims a few seconds each time someone knocked the aquarium glass (sorry, forgot to record). A few more photos at flickr
  5. Hello. If I have a Lego compressor and an LPE which are the exact same design, could one of them drive the other one? Is this possible?
  6. Hi everyone, I would like to present you my new creation, the Volvo A25d 4x4 remote controlled. The functions and characteristics are: -4x4 drivetrain powered by one XL motor; -Steering is achieved with a medium motor and one small linear actuator; -Tipper bed controlled by pneumatic and compressor by another medium motor; -Full articullated and big ground clearance. I am very happy with the way I found for the mechanism regarding the tipper bed in which it is only required one motor to operate simultaneously and synchronously the compressor and the pneumatic switch. Since there is a differential between the two, when the motor starts, the power goes to the easier side which is the pneumatic switch. When the switch reaches its end, then the power goes to the compressor. The same is true the other way around. This mechanism is realy helpfull when trying to reach dificult and/or distant places from the battery box because you have the advantage of the lenght of the pneumatic tubes. The link to all the images is here: http://www.brickshel...ry.cgi?f=558887 Meanwhile, I am editing a short video to show you these functions. I hope you like it.
  7. Hi, I'm starting this tread to gather different pressure switch and compressor designs. Please add your designs to the thread, or link to them. I've been tinkering with a pressure switch design for a couple of days (only have time for a few hours a day...) and have come up with a compact functioning design for relatively high pressure applications (will be presented soon). I know there are many other designs out there, and would very much like to see others designs to get ideas to improve my design, or maybe finding a design that is better suited. I also faced some problems with half stud alignment of the old small pumps to make a efficient compressor, so I would very much appreciate if you could show your designs here. I hope this topic can be a resource for the community on pneumatic ideas, especially pressure switches and compressors. -ED-
  8. Here's a creation that satisfies BOTH the fans of Lego Pneumatics AND Power Functions! fr3dpivo posted a of his "Lego Technic 9398 4x4 Crawler mod with height adjustable suspension, stabilizer bar, compressor and modified body. Hope you get ideas for your mod :-). Compressor design by DOTTECHNIC" [second below].