astyanax

That's really cool! How long did that take to render? (My laptop nearly overheated from just playing the video...) BTW, I think you got a #61409 upside down...

Between the hub and the rim one can insert 2 pulley wheels and 3 black pins to create some more distance. (This might introduce other problems... didn't think for more than 2 seconds about this... )

All my prayers have been answered! Also it's funny to see your hardware organizers for sorting Lego pieces; I have the exact same brand and model!

Indeed, the whole account is gone I see.

Indeed, I notice now it's sagging a bit. But that's very easily solved.

Finally I found the time to complete this beauty! I've built it using the half-stud correction mentioned in this thread. Also I've implemented the door modification that I suggested. I think with the tapered panel flows very well with the other lines!

This is a bit of a documentation of a quest I've been on over the past year. It started in January 2019 with a surprise purchase of set 42055 (Bucket Wheel Excavator) -- my first Lego purchase in 25 years, thus ending my Dark Ages. My local supermarket was selling 42055 at 50% discount in some kind of stock clearance sale. It surprised my wife too, although she soon happily joined in building this mammoth set! A little while later I was doing some Lego "research" and found this very inspiring clip by Yoshihito Isogawa: My new (and only!) Technic set also happened to have quite a few of those "banana gears", so I started thinking... Can I build something like this? And so my first C-model was born a little while later: Since I was (and still am...) a novice builder, my philosophy for building this was to make something so outlandish that no-one would complain that it's ugly! But I'm still chasing the closure of re-building Yoshihito's creation. I've now settled on what I think is a nice design (using Power Functions): I'm waiting for the last missing parts to arrive and will be building it soon! PS: It has a nice little twist... Since RC channels come in even numbers, there's room for a 4th function... Can you guess what it is?

Very interested to know how this works -- didn't get around to trying it myself yet. Do these CV joints affect the max steering angle?

If you're looking for a nickname for this car, I'd suggest "Lophius"... https://en.m.wikipedia.org/wiki/Lophius

I think the look is very effective for a "hypercar", in the sense that it gives you that "shock" when first seeing it!

Indeed, it's very hard to coordinate 4 motors manually. First I tried the CaDa controller (you can see its battery in the first photo) but that was really tough. Maybe an accordion player would manage. Then I used BuWizz with the BrickController2 app and a gamepad, which is the setup you see in the video. I set up the joystick on the gamepad to move the vehicle in precisely that direction, which works great, until the vehicle is rotated (which is necessary for overcoming obstacles), then it becomes really confusing again. But at least it has so much torque that it keeps going no matter what you do!

Perhaps it didn't format well on your side?

Sorry for exhuming this thread! Blame YouTube, which just put the video in my recommendations... It seems like this build could be very educative! Was there ever any plan to publish a virtual model or instructions?

I think I spotted a few of part 18654... doesn't that count as a 1x1 beam?!

I made an ugly piece of nonsense. It's not even original. I vaguely remember seeing videos of similar creations. I just threw this together this afternoon from pieces I had left over, after already having assembled a few prettier creations from others. These leftovers included the planetary hubs (from set 42099), a handful of small wheels, and 4 PF XL motors. This gave me the idea of creating a powerful omni-wheel thing. The powertrain goes: PF XL motor -> knob gear -> planetary hub. Indeed, it has torque to spare! I have a virtual model, which I'll probably put on Rebrickable within the next few days. Here some screenshots showing the construction of the wheels, relying on 4x part 44374 per wheel. I'd challenge you to make simpler omni-wheels. Edit: Credit where credit is due: I just rediscovered this creation which must surely have influenced me subconsciously!

"This project has become known among industrial design students as a catastrophic failure of engineering without proper consideration to design." Haha yup, this contraption is good for nothing except some mindless racing fun!

I don't entirely understand what is supposed to be parallel and why. Note that each wheel is driven independently. And the liftarms inside the wheel don't have to reach exactly up to the inner diameter: the axles that you see sticking out cover the last bit.

Actually the stops are too wide so the axles would stick out of the wheel, causing a bumpy ride! Anyway, the treads are entirely secure in the shown configuration.

Quite a few people before me have had the brilliant idea of turning Lego treads inside out to make giant wheels. But it's not trivial to connect and drive them in a strong and robust way. The vehicle can easily sag under the weight of its motors and batteries. This is exacerbated by the fast spins that you'll want to do with it! I found a very robust solution: (1) making the body as narrow as possible (just 7 studs between the wheels); (2) using small Technic turntables instead of axles to attach the wheels to the body; (3) using a reinforced liftarm construction inside the wheels. The model is VERY fast on carpet. On a slippery floor, spinning is the name of the game: Piece count: 260 Motors: 2x PF Large Free building instructions: https://rebrickable.com/mocs/MOC-38946/astyanax/fast-robust-inverted-wheel

Love this MOC! But me being me , I can't resist the urge to point out that "oldtimer" is a pseudo-anglicism. In "real" English it means an elderly person. Only in continental Europe this word is used in the sense of a "classic car". https://en.wiktionary.org/wiki/Oldtimer

Seconded! If you live in a more populated area, you have a good chance of finding good deals on classic Technic sets by patiently checking and re-checking your local advertising website (like craigslist?). I only started collecting Technic since a year ago, and managed to get 8448, 8455 and 42043 over the course of several months, all from locals, at relatively low price. The trick I found is to search not by set number, but by other descriptive keywords, as well as common misspellings thereof! Then you find sellers who don't know how to advertise Lego properly and are often not aware of how classic a certain set is and how much they could've asked for it...

I'm really squinting to see the difference... Is it the roof? (You can imagine how angry my wife is when she gets back from the hairdresser and I don't notice anything... ) Anyway, what I specifically love is the "judicious" use of the old-style panels! (I have 8448 & 8458 sitting on a shelf next to me now, and they still look so good...)

I think the glass doors are the main feature -- as a barrier against dust (not perfect, of course, but it helps).

I have 2 of these: https://www.ikea.com/us/en/p/billy-bookcase-with-glass-doors-beige-50323804/ The shelves are large enough to fit 42055 (Bucket Wheel Excavator) or 42082 (Rough Terrain Crane -- very snug). Only my venerable old 8458 (Silver Champion) is too wide...

Sooooo awesome! Will definitely buy the instructions once published! I'm just missing the lady for scale...