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Found 33 results

  1. Few months have gone since I built my last alternative model from set 42106 and I got desire to build another one. The first model was Pullback Racer that I built for TC18 contest - more about it is here. Then I built Pullback Plane - more about it is here. And finally now I've built Pullback Helicopter. I planned to build it even before plane but I rejected it because I didn't see the way how to connect both rotor blades with pullback motor and landing gear. Set 42106 contains only 5 bevel gears and I usually use 6 for helicopter (three pairs). Later I find solution for problem with missing gear - I saved one bevel gear by connecting axle for tail rotor blade to another pair of bevel gears that transmit motion from horizontal axle to vertical. The only con of this solution is low possiion of axle for tail rotor - see picture of mechanism. The last issue, I had to solve, was possion of center of gravity - it was too close to tail so helicopter made wheelies. I prevent them by adding structure under tail rotor blade. Do you think it was all for now? No, it wasn't. I've got one more idea, much crazier idea - I wanna build Pullback Steam Engine! I focused more to functionality than its look so proportions are not correct but it really works. Pullback motor is connected to rear axle and it drives also middle axle thanks to piston-rods. Front axle with small wheels works just like stabilizer (I had to move driven axles too far to rear behind center of gravity and whole vehicle would fall on its front without small wheels). Finally I added optional flame on chimney (smoke would be better but I didn't find any in donor set). I plan to make video of steam engine in action but it will not be anytime soon. Any comments and criticism are welcomed.
  2. I haven't built anything from Technic for couple of months so I wanted to create something cool and cute. I took all azure parts from rally car (set 42077) and started building. After few hours I've got this blue shark. It is the third piece in my collection of Technic sharks. I built it just for looks so it features only opening maw and moving fins and tail. All is operated manually. I also built simple stand for it so it don't have to lie on its maw. If you want to build it you can download free building instructions from my website buildinst. I just recommend you to use panels without stickers otherwise it would look awful. Any comments or criticism are welcomed.
  3. I haven't been building any plane from LEGO Technic for a long time so I decided to build new one. I built it from set 42106 and it became my first twin propeller plane and also the first plane with pullback motor. Pullback motor is connected to both landing gear and propellers so after pulling it back you can let it run forward or lift it and let propellers spin during flight. Building instructions are available at buildinst.cz Any comments are welcomed.
  4. Let me introduce you one of my coolest alternative models - Shark Mk II. Why do I call it Mk II? It is the second generation of moving sharks that I've built so far. The first one was built out of set 9394 (red jet) 6 years ago and was red. New shark is built out of set 42066 (blue-black jet) so it is BIGGER, better and finally blue. :-) It features two motorized functions: moving tail and opening maw to eat moving fish. You can turn them on separately or together with help of two red levers on stand. It contains 814 parts. I built it in the middle of last year but I haven't made video for it until today. Building instructions are available at rebrickable.com Any comments are welcomed.
  5. My wife asked me to take apart set 40171 I gave her few years ago. When I did it I got idea to build something from it. And what is the best alternative model from any set? Helicopter! This one is even little bit special. It features opening windscreen, both rotors can freely spin and it still keeps appearence of original hedgehog - snout, thorns and four legs. So this is what you get when you crossbreed hedgehog and helicopter - Hedgecopter Building instructions are available at buildinst.cz And this is original model: Any comments are welcomed.
  6. This deer is my second alternative model built out of set 70827 (Ultrakatty & Warrior Lucy!). It features big antlers and moving legs, neck and head. My goal with this model was to find some purpose for different thorns included in big amounts in set 70827. This model is my fourth entry to TLCB Lock-Down Competition. When I was done with deer I built simple turtle from leftover parts to give Emmet something for riding too. You also might remember my first alternative model from this set - Alien queen. Building instructions for both models are available at buildinst.cz Any comments are welcomed.
  7. Few years ago I built dune buggy from set 42075 (First Responder)... ...now I am back with second alternative model - Pullback Helicopter. It features opening windscreen, engine with moving piston and cool spring loaded mechanism for spinning rotors. It works similarly to pullback motor but it uses shock absorber to store energy for spinning. I took inspiration for this mechanism from Isogawa Yoshihito's book "LEGO TECHNIC Tora no Maki". I also built this model for TLCB Lock-Down Competition. Building instructions for both models are available at buildinst.cz Any comments are welcomed.
  8. I tried to build my own alternative model from set 42061 several times in past but all my attempts failed. When I was decided to sell this set I got idea to give it last try. My initial goal was to build some kind of buggy. After few hours I built working steering and in-line fake engine driven by rear wheels. Building car out of parts from set 42061 was painful (it has pretty bad assortment of parts) and I am not totally sutisfied with look of buggy so I call it "Ugly Buggy". By the way it fits to TC18 contest but I think it is too simple to submit it there. So I use it for TLCB Lock-Down Competition instead. When I finished building buggy I decided to build more - to build something easier. So helicopter was the best choice. I took little bit of inspiration from @BusterHaus - I like how he used gear rack for tail of his helicopter. My helicopter has both rotors connected by gears so you can spin them together by turning gear on bottom of helicopter. This is also my second entry to TLCB Lock-Down Competition. Building instructions for both alternative models are available at buildinst.cz Any comments are welcomed.
  9. Let me introduce you my latest alternative model built out of set 42094 - Snow groomer! It is already my third snowcat I've built out of LEGO Technic. You can see it here next to its lil bro from set 9391. It features two manual functions: lifting snow plow by turning gear on the roof of cab lifting rear blade by turning lever behind engine cover Since set 42094 contains just one linear actuator and no worm gears I used two shock absorbers to keep rear blade in two positions - up and down. The first version of model also featured gearbox for switching between functions above operated from same place on roof of cab. I had to remove it because gears were not able to transmit huge torque necesary for pushing springs on rear blade. Building instructions are available at rebrickable.com Any comments are welcomed.
  10. When I saw set 75936 first time I fell in love with this huge T. rex. Then during building it I found big similarity between body of T. rex and chicken I had for lunch. This gave me initial idea: "Is it possible to rebuild T. rex into chicken and use only its parts?" Now I can say YES! I used original legs, modified body, make neck longer, built new tail, wings and head and here is Chicken rex (in short C. rex). It feaures moving legs, wings, neck, head and opening beak. You can find its detailed review here. And by the way it is even life-size - you can see my chicken besides medium sized egg for comparison at picture bellow. Building instructions are available at rebrickable.com
  11. I like idea of current TC18 contest so I decided to build something for it too. My initial idea was very simple - it has to be alternative model. Then I found out that set 42106 is the only set I own with four 43,2x14 wheels so I chose it as parts resource. This set also features pullback motor so I think I am the first who decided to use it in model for contest. Since I also wanted to add ordinary steering I had to find the way how to make them work together. I came with idea of two modes: Pullback - pullback car with blocked steering to keep it going straight Steering - car with steering and disabled pullback motor to allow reverse I began building chassis with necesary mechanisms and then tried to build body around it. Honestly this is my first "normal" car so I was very curious about result (I built only hot rods and buggies before). Building body became as interesting as I stopped taking care about chassis and made body one solid structure. I didn't take inspiration from any real car but I think it looks like hybrid between Škoda 135, Ford Mustang and some Asian tuning car. Body is connected to chassis only by two pins and four axles. It has very simple interior with steering wheel and no seats due to limited amount of parts in set 42106. Overall dimensions are: lenght 34 studs (41 with flames from exhausts), width 15 studs and height 12 studs. Back to functions - pullback motor is connected to rear axle through 3 gears that can be disconnected by gear behind right door. Connection is also secured with black pin to resist torque from pullback motor. Steering can be locked by two axles controlled by black lever. Thanks to its big weight this race car features small acceleration and low max. speed. Chassis in pullback mode Chassis in steering mode Building instructions are available at buildinst.cz Any comments are welcomed.
  12. Two years ago I built freight helicopter out of set 42074 and few weeks ago I built another alternative model from this set - propeller plane. When you are moving it around it whirls its propeller. I enjoyed building it very much - it took me just three nights to build it and I like its bright color scheme. Building instructions are available at buildinst. Any comments are welcomed.
  13. LEGO Technic buggies have special place in my life - my very first LEGO set was Technic buggy 8829 and buggy 8048 took me definitely back from "dark age" so buying new buggy 42101 was sure thing for me. I also knew what I wanna build out of it - motorbike because it was official alternative model of set 8829. It took me a lot of effort to build it. I spent more than 12 hours by trial and error before I found the way how to build it. Final model features same functions as main model - steering and rear axle suspension. Building instructions are available at buildinst.cz
  14. Let me introduce you my latest alternative model built out of set 42081 - wheel skidder. I planned to build skidder for a long time and set 42081 looked like ideal resource of parts for it. I took most inspiration from CAT 525C and log loader built by M_longer. I used M_longer's grapple design and his statement: worked like challenge for me. My skidder features: articulated HoG steering lifting of decking blade dual-function arch working grapple All functions are operated by orange axle joiners. BUILDING INSTRUCTIONS are available at rebrickable.com With few logs... Any comments are welcome.
  15. Let me introduce myself and tell you something about this new topic. Some of you may know me in connection with modification of alternative model from set 8052. I modified it into truck with work platform last summer and provided you building instruction via brickshelf. It is not my only creation so I decided to share my other creations with you too. One more note before introducing my models – I am focused on building models from one set so they could be named as “unofficial alternative models”. It’s enough about me and let’s look at what I have for you now! This is truck with work platform I spoke about above. My latest creation is “telehandler” also from set 8052. Honestly it doesn’t have telescopic boom but at least it looks like it has... :) It features following functions: lifting boom via linear actuator and medium motor with gear ratio 1:3 (it is as slow as lifting container in main model) rear axle steering with eccentric control via beacon on roof of cabin – this was little puzzle because lack of bevel gears front stabilizers which are able to lift front wheels little bit above land adjustable rear mirror (I like especially that one on side of battery box)
  16. Let me introduce you what I was working on last week - it is going to be helicopter loosely inspired by Bell 47. I call it Nighthawk because it is also my tribute to set 8412 that I got when I was child. I will feature: crank for spinning both rotors fake six-cylinder flat engine with moving pistons lever in cockpit for tilting main rotor (this is not realistic function but it is reproduction of functionality of set 8412) Since I build almost exclusively alternative models this helicopter is no exception. I only use parts from rally car 42077. And now some pictures of my progress: Initial proof of concept to ensure that I have enough gears Prototype of cab with seat and lever The first assembly of whole helicopter (before I took it apart for structural upgrades)
  17. Hi Newbie around here, used to play with lego back in the days and somehow got back into it but this time as grown up and and adjusted gaming budget ended up buying some Lego Technics models along the way (mainly stuff with tracks :) ). So got my hands on the 42065 Tracked Racer, really liked it but fell in love with the B-Model/Off Road Truck and started putting my two RC 5292 motors into it. Here is a short video about the evolution to my so far "final" v5.3 Mod: Short recap about the progress: replacing the two PF motors with the RCs, and going for an SBrick increasing the wheel base and changing to 3:1 gearing, then getting to know about the fuse inside the battery box, adding suspension, moving the battery up increasing the wheelbase again to get two battery boxes inside and double the SBricks, and change to 1,667:1 gearing Putting the RCs horizontal with a 2.5:1 gearing Currently working on: Getting a GoPro attached Getting it a bit water/splash proof to be able to go through some puddles (so far cling foil wrapping battery cases) ToDo: Get some filminig done of the v5.3 with the 2.5:1 gearing Getting the PS3 controller working on the Nexus 5 together with the SBrick Future ideas Improving suspension, weight is currently heavy on the rear Getting a winch into it on the rear or front Automatic two gear box to get faster on plain surface and getting more torque when going through terrain, looking at sariels automatic two gear box so far, but it probadly wont fit p.s. These are my first attempts at shooting videos as well, so bear with me ;-) . Most of them are handheld from my Google Pixel while driving with my other hand on my old Nexus 5
  18. Hi all, when I saw new The LEGO Movie 2 sets I fell in love with Ultrakatty set 70827 and began thinking about what else I can build out of this set. The first idea was to build Ultrapuppy but I was not able to give it cool enough appearance and personality. Then I got another idea that excited me much: What about giving Emmet and Lucy real alien that would fight with those Duplo monsters? ...and it should be the coolest alien of all - alien queen! "Who is cooler alien now?" I tried to build her as close to original as possible with limited sort of parts in set so I added such details as second jaw, big collar behind head and many thorns on back and tail. I also had to forfeit some details like the second pair of hands on chest and use pretty "wild" color scheme. Finished model features good articulation and big feet gives it some stability. I hope you like it. Any comments are welcome.
  19. I would like to introduce you alternative model built out of little set 42045 - helicopter. This set contains just 180 pieces so building alternative model from them was pretty difficult and challenging. My helicopter has even few functions - it features two-cylinder fake engine and if you turn gear under tail rotor, pistons in engine will move and main rotor blade will spin. If you want to build it you can download building instructions from my website buildinst.cz
  20. I' ve decided to make an alternative model for 42054 CLAAS XERION 5000 TRAC VC set. I' ve wanted to design something different from all those excellent c models already made, so I made a truck capable of off-road conditions, with crane and many other functions. The result: Functions: rear axle drive with 4 piston engine steering live axle suspension side outriggers cabin tilting rear PTO (power take off) crane arm rotation crane arm 1st stage elevation crane arm 2nd stage elevation grabber closing/opening Please watch the video to see this machine in action and for more details. This model is powered by one m motor with rotation direction selection. It powers main selector, crane selector. and PTO. Main selector switches between worm gear powered functions and arm rotation. When worm gear functions are selected, there is another switch to choose between outriggers and cabin tilting. The crane selector switches between 1st and 2nd stage elevation. I had to use some interesting (I think) solutions because of parts selection in 42054 set: Piston engine There are no piston engine parts in the set, so i made them from some connectors. You can see it working in the video. Suspension There are no shock absorbers or wishbones too. So I' ve made a suspension based on twisting axles: Every wishbone is suspended independly. 3 of those connected to axle make a well-working long travel soft off-road suspension: Grabber There was a grabber in original set, but when building the grabber I've already used the worm gear for more important functions, so I' ve designed a different locking mechanism: Turning the green axle makes the red grabber frame move up and down and becouse of engaging the blue knob gear with h-frame opening and closing blue grabber. Instructions Instructions are already available here on rebrickable! I hope you liked this model.
  21. When I saw first pictures of set 42074 (racing yacht) I knew I have to take it and rebuild it into something else. So let me introduce you my latest alternative model - freight helicopter. It spins both rotors when you are turning gear on its bottom. Since set contains just 2 bevel gears I had to build another couple of them from bricks and connectors - I have already used this assembly for my dragster built out of set 42036. ...and little excursion into its innards:
  22. Although I'm not fan of Nexo Knights I was asked to built something else out of bricks from set 70321 - General Magmar's Siege Machine of Doom. Since this set contains 6 wheels I've decided to build something like american truck. It has three axles and long nose with maw full of teeth. There is also disk shooter over its rear axles. I've used just bricks from set 70321 so it can be called alternative model.
  23. Main model from LEGO Technic set 42037 - Formula Off-Roader doesn't resemble formula at all so I tried to build something closer to formula out of its parts. Since it has huge wheels I call my alternative model "Off-road Formula". It features steering, independent suspension and V4 engine. I began building it more than one year ago and got stuck with front axle. It was the most difficult part of whole model because I had very limited sort of parts - this set lacks connectors, blue 3L pins (it contains just 9 of them) and there are no 5L liftarms in it. Even designers from LEGO decided to build front axle of official B model without suspension...
  24. When I was thinking about what to build out of set 42065 (RC Tracked Racer) I've got idea to increase its playability by adding blade. So I started building bulldozer. Finished model features blade that allows you to push something. I had to deal with lack of liftarms and pins that led to sacrificing easy access to battery box - if you want to replace batteries you literally have to dismantle almost whole model. In short, it is compact, sturdy, too fast and fun to play with.
  25. I haven't posted any model here for a long time so let me introduce you my latest alternative models built out of set 42060 - Roadwork Crew. The first of them is Formula 1. It has pretty low functionality (just "hand of god" steering) but at least I've made something original. :-) Most of formula is only 3 studs high so it was big challenge to squeeze steering in it. Another alternative model is Propeller plane. It whirls its propeller when you're moving it around. This model is literally full of "crazy" building techniques because I had to connect together all those liftarms going in different directions. I've built both models for competition in building alternative models out of set 42060. If you wanna see what other competitors built, check this link: http://www.kostky.org/forum/index.php?topic=50909.0