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Attika posted a topic in LEGO Technic and Model TeamHello fellow Technic fans, let me present to you my tribute model to the well known, iconic set 8880 As a new member I should introduce myself, but I did that already in the forum designed for the very purpose so I just link that here http://www.eurobrick...howtopic=134093 and we can jump to the main subject. I've been encouraged by a commenter on youtube who is a member here to share this MOC of mine on this forum as maybe this will give you a rest after the frustration caused by the much anticipated 42056. Don't get it wrong, I don't mean to fill the gap it left (I read the topic too and share the feeling), but hopefully can give you a few minutes of entertainment. I admit it is a sensitive piece of history to touch, but I hope you recognize that the respect towards the original model what was driving my hands while I was designing this plastic homage. Probably some of you have already seen the video on the youtube. For those who didn't let me link it: Instead of making a new description I'll use the one that I made for the vid and pepper it with some images: The original set 8880 has been released in 1994. Sadly that time I was living my dark age (life without lego). Now it's been 4 years that I got back in business, dark age is over and this set is weightly responsible for that change in my life. First I was just reading about it on Blackbird page. Long story short I could manage to get one, and as an old school lego fan (being child in the 80's) it straight enchanted me and determined probably my whole life (hobbywise at least). In the same time I really admire the modern studdless system of lego and it inevitably ended up in the demand in me to build a studless version of it. I've built it first in 2013, but in lack of sources (parts and talent) it wasn't really desirable, nor "smart". Since then I keep rebuilding it time to time and always ends up better and better. According this I wouldn't say this is the last or the best of it, but at the moment this is the stage of its evolution. This is where the name I gave came from. A few words about the details: Body: As you can see I did not use panels but kept the wireframe like appearance as it is one of the benchmark of the original set. Speaking of which I have to admit I did change the shape of the front a lot, even eliminated the concealed headlights due to the feeling that time has passed and it's not cool anymore. But to pay back what I took, I've designed a hood what follows the geometrical concept of the boot. If you listen closer, when the hood opens, the headlights are sliding backward. Rest of the body I think speaks for itself. Interior: Not much to say about it, seats, dash , keeping the colour scheme. Gearbox: Now that is a tricky one. That was the first problem I've been facing with as due to the size of the model I needed a narrow 4 speed gearbox with central differential, but I could not find a decent one anywhere. Crowkillers Paul had the 6 speeder, but it was too wide for my car and Sariel's 4 speeder has been designed for two wheel drive. So I've spent the next month and a half to develop a new one from scratch. Of course if there is a central diff it should be lockable, so it is. And it makes a very compact structure with the gearbox itself what comes handy in modular building. Edit: that was years back. From here it seems rediculously long time, but I let you decide. Here is a deidcated video about this gearbox: Steering: Unlike in the original, there is no ackermann geometry in my model, but please blame lego as it is the field where the part developement goes backward. Anyway the front steering is pretty simple, but for the rear I had to use a rod mechanism, since the compact gearbox left no room for an axle to go trough without compromising the aesthetics. It comes however with certain benefits, as with minor modification on the linking can change the steering lock of the rear wheels. I've applied the smalest as I've found it more realistic. The real life 4 wheel steered cars have only 3-5 degrees on the rear. Ground clearence adjustment: No witchcraft, a worm gear and an 8 tooth gear paired up on each wheel to lift and lower the shockers trough an axle. That's it. Friend of my accidentally discovered (by opening the boot) that this coupe can be converted easily to a hatchback... To be honest I did not consider this as a requirement when I was designing the model. I've made a couple of colour variations too as it appeared above. There is more hi-res pics on my brickshelf: http://www.brickshel...ry.cgi?f=562855 Building Insructions: https://bricksafe.com/files/Attika77/8880-evo-tribute-model/Attika_s_8880_EV_Tribute_by_1963maniac.pdf Feel free to share your opinion or ask about it Thank you for your attention. Attika
Madoca 1977 posted a topic in LEGO Technic and Model TeamHello everyone. As a monster truck MOC was one of my earliest creations, the time has come to remake it! Weight: 2030g - Powered by 2 SBricks - 4 XL motors for propulsion - 2 Servo motor for steering - M motor for switching steering mode (normal/crab) - M motor for raising front hood and rear bed - LED lights for headlights - Openable doors and tailgate Those old-school power functions components still work sufficiently in this MOC. The body was inspired by 80's monster trucks made from lifted and modified Ford pickup trucks. The under structure was designed for robustness. Eventually it looks more like modern tubular chassis. There could be multiple options for the sets of dual shocks. (Hard/Soft, Hard only, H/H, S/S) Vertically placed M motor moves Polarity Switch connected to rear Servo motor. Horizontally placed M motor is for two functions. Front hood opens via worm and 24T gear. On the other hand rear bed is raised via small actuator. That requires two driven axles of different torque and rotational speed for each side. Center differential enables single motor to transmit the power to both sides. One of the benefits of portal hub is easy to change gear ratio. Body parts could be replaced with different color scheme, though they are not fully modular. On November 2nd and 3rd, Monster Jam live was held in Japan for the second time. I did go to the event and took photos of amazing real monster trucks and drivers. Thank you, Bari Musawwir and Neil Elliott! Building instructions available at Rebrickable.
So after building the jaguar 4x4x4 I got an idea to make a lighter, less part destructive version. The main idea behind it is to combine motor placlement of the fox 8x8x8 with doble wishbone suspension of the jaguar. This kind of setup enables the model to use only 2 gears/wheel and keeps the wheels always parallel relative to the body. Here are first preliminary pictures: Compared to the fox and jaguar, here are the improvements: - The servo motor is placed closer to the steering rack, therebye more-than-less removing steering flexibility - I am using two steering racks per axle for aditional steering system stiffness - Suspension is now almost horizontal and takes little room - Angle of the suspension travel is 30 degrees/wheel - Foxes's proven concept of the motor gearing eliminates the possibility of breaking gears/joints - I plan to use V2 receivers for that extra bit of juice - Shorter wheelbase allows for better steering radious and offroad performance - less likely to hang on an obstacle - Lower, more stable design - more room left for interrior UPDATE: Its been a while... But here are the new pictures and the video I improved model a bit, raising its ground clearance and removing some parts on the underbody, so its harder for it to get lodged As usual I also made an LDD file, which you can download here. And for rebrickable click here.
So after a week of tinckering and improviments on the new portal hub assembly I give you the Titan! For now I have only these 2 pictures, but more will follow soon: As you can see, its powered by 4 XL motors, each wheel has one geared down 5x, giving it teh highest total torque in any of my models. The motors are also structual parts, holding the axles together. For steering there is a mini LA for each axle, capable of steering angle of 30 degrees. Due to the way axles are built I wasnt able to use the 4 parallel links to stop the axles from swaying side to side, but instead used a small panhrod. Suspension allows for a total of some 60 degrees of flex and even though I used the hardest springs, its still pretty soft. I will give more info tommorow when I eill record the Titan in action. Cheers!