Rascko

Just amazing. Really love prototypes - they're bright and are of quite an unusual shape for European cities, but the MOC is even more astonishing.

Cool looking mecha-lobster, and a smooth-functioning too!

A few months ago I've got an idea, that I've never seen Lego Technic tiltrotors, which have motorized folding propeller functions (Despite, there were some excellent Ospreys and similar - my favorite are http://www.eurobricks.com/forum/index.php?/forums/topic/62305-moc-mv-22b-osprey-tiltrotor/ and https://thelegocarblog.com/tag/osprey/). So, this is what I've got in the end (sorry for mess on the background, I really don't have other place for photographing something that is ~1m long): Motorized functions: Rotors folding Rotors rotating Nacelles turning Wing folding Rear ramp opening (forgot to take video of this) Landing gear could open and close (the same - forgot to take video + it was not easy to show, as it barely stands w/o support) For keeping blades in position they were folded/unfolded during rotation, I've synchronized axle, which drive folding, to rotation of propeller, using two small turntables per nacelle (really big thanks to user Limga, who provided me this idea). In general, this was more like "proof of concept", that something finished and in future I hope to return to this idea, because lots of issues remain unresolved and could be done better, if designed better and earlier: This monster is heavy. Like 10+ kgs and all the weight is carried by only 3 axes (one in each landing gear leg). It could stand w/o support, but I've used some tires from 42030, just to make sure that axis won't break. Wing folding works poorly. Even big turntable can't properly handle smooth movement. Need to think on more reliable solution. Nacelles' rotation really go non-synchronized under load. I use two motors (one for each) on one output, but it makes them go out of sync just after 2-3 cycles of "up and down". Need to consider separate control, as mechanical linking in such scale will be definitely failed. Controls like elevator/ailerons etc barely works. Need to consider using strings or something like this. Folding mechanism could go disassemble itself, if excessive load will be applied on folding/unfolding. This doesn't seem like a big problem. And some more photos + video (sorry for that "heavy breathing" in the beginning :) ) And the video of wing-and-propeller related functions:

Hmm, why do you need all these actuators and so on there? If you have train remote (I mean this one - https://sh-s7-live-s...d=0&printRes=72) - isn't it possible just to connect levers to actual driverings of a remote with just a couple of bevel gears? Will need some gearing down, but should work. So you will need just two motors per wheel - one for rotating controller and one for drive itself? BTW, I've just got the idea, that I've never considered remote as a valid part of moc for doing something specific. So, there appears very interesting question - what part could be used for connecting to remote channel switch? :)

One more mad idea - I'm not very sure, whether it's possible by Lego pneumatic, - having kind of compressor, that is pumping air into some cylinder with piston, that loses air. The higher is rotation speed - the higher is piston lifted with pressure. But this seems an even more contraption-styled. Spring loading might help.

Just one more scheme of mechanical tachometer, with spring inside - could be used for inspiration of some kind.

It's possible to try something like this: But not sure, whether this could be made compact enough to fit your MOC.

Wow! Really amazing match with this bus face! Still remember these buses from the times of childhood :)

Yes, it's a bit sad - except for a good look, aviation kits are usually good source of parts - panels, beams etc, and I've expected some more white stuff, just to continue traditions of Cargo plane, Fire Plane, last Helicopter etc.

Try to use some truss-like construction, with diagonal elements, connecting parallel beams. Making triangles like 3-4-5, 7-9-11 or 6-13-14 (every number is a triangle side length in studs) could help you much in creating rigid and strong constructions.

depending on what's you're going to build and whether the price matters. It is OK, when you need 1 - i.e. 4 outputs are enough. But when you need many separately-controllable outputs, SBrick seems a better option from the point of "price per output" view.

There are three actual approaches:- use profile editor and "sequences". This barely could be called "programming", but could arrange some stuff like "do something in specific order". Unfortunately, lego motors doesn't provide feedback and stuff like "do this after this" could be done only with very precise timing (and pray for that timing not to change from discharging batteries :) - second one is based on usage of Scratch and stuff like it. Might be an worthy idea for somebody (maybe schools or any other educational institutions, as it's more like "programming for non-programmers"), but I don't like it for me - it's something closed and the nicest thing in programming stuff like this is interaction. - third one is usage of "protocol" (https://social.sbric...f-the-protocoll, https://social.sbric...ck-ble-protocol). And here's the best part goes. You can use it from any language/environment, where you could access BLE programmatically). Python should allow this, as it has excellent libraries for everything in the world. Now I'm waiting for BLE dongle to arrive (it's not easy buy one here, still have to wait like month) and going to test stuff both on PC and something like Raspberry Pi - as it's easy to take anything in Python there.

Amazing idea and great implementation. Would be really nice to continue and re-create the whole carrier :)

Thank you so much, this was the idea I was looking for (so simple, but brilliant!)

Yes, several of them :)

Good afternoon to everybody. I've got quite a strange and possibly noob question, but I've googled around and haven't found neither answer nor clue :( In thing I'm doing, I need to rotate axle, going through Small technic turntable, with the same angular velocity, as rotating turntable has (kind of synchronization, I couldn't hard-couple them as in other mode it should rotate alone and turntable will be locked). And I don't have any 14-teeth gears to drive rotation of small turntable (but I have some 28-teeth diffs). Does anybody have some experience/ideas in synchronizing rotation through small turntable with rotation of turntable itself? Thanks and best regards.

It is interesting, what will be used as a prototype for Race Jet? Nowadays majority of race jets are either Czech L-29, or L-39 or Polish PZL TS-11 Iskra jet. It would be nice to resemble DH Vampire, that was used on Reno races for several years, as it has quite unusual shape with two tail booms.

BTW, Saturn V in scale ~1:100 was approved on Lego Ideas - https://ideas.lego.com/projects/76841

Real exchange rate might differ from indicated by google or something like this. For example, in Ukraine we have official exchange rate like 1$ =16 UAH, but if you're going to buy something from abroad using your credit card, real exchange rate will be something more like 1$=20 UAH.

AFAIR, from time to time, YouTube is deleting video with copyrighted music, but they're usually deleting/desounding videos with music from major recording companies, like Sony/TimeWarner. For sources of free music I could recommend: 1. Read this, some useful stuff could be found here: https://support.google.com/youtube/answer/3376882?hl=en 2. http://freemusicarchive.org/curator/video

I really need to prepare some background and "sample airplane" (think, will create some "draft" structure of plane or trailer with imitaition of plane front leg to show how it works)

~3 kilos. It's big, but there is quite a lot of hollow space (f.e. near wheel arcs of front wheels - these wheels need enormous space around to turn :)).

Some updates on bodywork, it goes not so fast, but main panelling seems to be done (sorry for horrible photoshopping around, really wanted to hide mess in my room :) ). And for now it seems, that it will be necessary to buy at least 1-2 big A0 paper sheets to make background for photographing this monstrosity.

It might sound like heresy, but making this connection only 1-stud longer, we can avoid cutting, don't we?

Hmmm, couldn't it become a good idea for something like space rovers, like Lunokhod or Curiosity? Btw, It could give enormous road clearance.