[WIP] Lamborghini Aventador SVJ 1:8

[ibessonov]

Hi everyone, this time I want to show you another work-in-progress MOC, but this one is more recent. The reason why I want to do this is quite obvious - LEGO releases their Lambo this year, and I am also aware of at least one Aventador MOC coming soon. We should have even more Lamborghinis, they are awesome and I can't wait to see these models.

My version is a dark blue + white model in 1:8 scale with some basic functions:

• Steering with working steering wheel.
• Openable scissors doors.
• 7+R gearbox.
• Remote control using a single Control+ hub:
  • 2 coupled XL motors for drive;
  • L motor for steering;
  • L motor to change speeds.

This time I decided to build everything independantly and simultaniously. It actually helped me to become much more productive.

 

I'll start with the bodywork. It's not completed and is built around a very crude carcass. I'm trying to concentrate on the shape only. There will be enough space on the inside, I'm taking this into account while building.

As you see, it's about 60% completed.

 

Front section is not done yet, but the back looks almost completed and I really like how it turned out. Reminds me a "snowboard glasses" a little (don't know how to call them but I'm sure you get what I mean):

Of course, these gaps will have black background in the future and I will add some filler to them as well. Rear wing also looks completed, it might be my favorite part of the build, here you can see it from another side:

 

Now I want to show a door closely. I tried to replicate scissors mechanism as closely as I could. First version used shock absorber and was way too big. The proble is that it has to be very close to the front wheel, it's pretty hard to do.

Second version required 3 small rubber bands to hold door's weight. On the following photos you will see a third version. This is how it looks being closed:

This is the first step of opening when you open it just like a regular car's door:

And this is how it looks when you open it in a different plane. It holds itself locked with two rubber bands that you can see at the bottom:

Here's a shot from the front with both doors opened. You can see that the door on the right has "old" design, I improved on it already:

 

Next two pictures are showing caliper on the front wheel. I wanted it to be angled just like on the real car so I had to be creative:

Yes, this is a sausage piece. Calipers on the rear will also be angled, but with more conventional build. I don't have it right now so the picture will be in one of the following updates.

 

Now car's internals. Here you can see a gearbox and rear wheels. 3 motors are clearly visible. 4th motor will be in front of the hub. The idea is that L motor will change speeds by rotating by 180 degrees, this can be done programmatically rather then mechanically. But it doesn't mean that the build is simple, because it's not.

I used only one of those new orange "wave selector" gears, everything else is basically a huge improvement over the gearbox from my LaFerrari MOC, but it's 1.5 times bigger because of that "reverse" speed I added.

It's actually pretty fun that I managed to use a 40 tooth gear in this model. I guess I could use 36 + 2x28, but I don't have 28 tooth gears yet:

 

Here's a view of the bottom. A huge con of the model can be seen here - it has no central diff, but still I expect all 4 wheels to be driven. On the other hand, I left a lot of holes so I can see gears turning:

This construction is not rigid enough in several points, I think I will have to completely rebuild it and ensure that it is strong enough. It's already pretty smooth and if motors won't be able to handle the weight then I can play with the gear ratios from motors - there are dedicated places in the gearbox for this exact purpose. I hope that it will become a good model and you'll like it. Thank you!

[Touc4nx]

This seems pretty interesting. I love the color scheme, Dark blue and white are a perfect match.
But why using this part as side mirror ?

Spoiler

Just now, ibessonov said:

 

It will look like this : 

(Picture posted by @apachaihapachai)
Appart from this, it looks like a promising project.
And I love so much that "sausage brake" 

[letsbuild]

This has so much potential! I can't wait for the final product!

[Gray Gear]

Looks pretty nice this far.

How the hell can you build a car shell without the mechanisms inside? I always build the mechanisms first, and then shape the car around it...Well you do you I guess, It looks like you know what you are doing 

Love the sausage brake solution 

But I agree with  @Touc4nx , do some good looking mirrors. You are not TLG, it does not matter if the model will end up a few bucks more expensive 

The one thing I really absolutely hate is the 2 joint pieces used to connect the shift motor to the gearbox. There has to be a better solution than that. It am having flashback from seeing the Land Rover gearbox,  

Edited March 9, 2020 by Gray Gear

[ibessonov]

10 hours ago, Gray Gear said:

How the hell can you build a car shell without the mechanisms inside?

This allows me know what mounting points a will need in the future and where exactly to put seats, for example. Plus I know the exact dimensions that I have to fit all motors and gears in.

And overall it really helps when I see how it's going to look. Gives me a good perspective.

Considering mirrors and paired U-joints, I'll do something with it. There's a lot of work to be done.

Edited March 10, 2020 by ibessonov
clarification

[Jeroen Ottens]

That looks stunning already. A very ambitious project to undertake, I love that. The doormechanism looks really smart, these Lambo doors are a pain in the... to design.

I am not sure about the combination of a motorized drive with a 7+R gearbox though. I fear you'll never get the speed you'd expect from such a supercar with such an elaborate gearbox. Have you testdriven it?

[ibessonov]

4 minutes ago, Jeroen Ottens said:

I fear you'll never get the speed you'd expect from such a supercar with such an elaborate gearbox. Have you testdriven it?

You know, I don't expect it to be fast. For me the joy of creating a complex gearbox is more valuable, I'm not going to play with the model anyway 
I have tested it but results are irrelevant until I know the real weight of the car, I am not experienced enough to predict it.

[Gray Gear]

2 hours ago, ibessonov said:

You know, I don't expect it to be fast. For me the joy of creating a complex gearbox is more valuable, I'm not going to play with the model anyway 
I have tested it but results are irrelevant until I know the real weight of the car, I am not experienced enough to predict it.

Thats why I don't put motors in my models in the first place. I just want the satisfaction of a smoothly working gearbox.

[LvdH]

Nice progress! The disk brakes are really cool, love the use of the hotdog

[SamuelYsc]

I like that sausage XD

[vded]

This is going to look stunning, and the other day pinged loxlego about building an SVJ haha. Great solution for the brake calipers!

Please, consider a manual version too if you're gonna sell the instructions. :)

[nerdsforprez]

Best solution I have seen to date for disk brakes

 

[MP LEGO Technic creations]

I'm really looking forward to see this completed!

Edited July 1, 2020 by MP LEGO Technic creations

[KevinMD]

8 hours ago, nerdsforprez said:

Best solution I have seen to date for disk brakes

 

I assume you mean for an aesthetically pleasing caliper in which case I wholeheartedly agree. Sausage / skelly arm was an ingenious solution. 

[Gray Gear]

@ibessonov Do you have more progress to show on this MOC? It looked quite promising. 

Or did I miss the thread presenting the final model?

[ibessonov]

On 10/15/2020 at 2:05 PM, Gray Gear said:

Do you have more progress to show on this MOC? It looked quite promising.

Sorry for a late response, I've been out for a while. The model is not finished, but there was a progress that I didn't post. Right now I don't have full access to my Lego so I try some things in stud.io, parts of which were built phisically.

The most important thing is that model is no longer RC, putting C+ hub in the place that I chose was a terrible idea. This means that I have to "reverse" all gearing reatios in gearbox. One day I'll post detailed description of new gearbox design, it's already finished.

Now, some pictures:

Removing motors meant that I needed fake engine and it should fit into a narrow space. Here it is. I also played with instructions builder, here's result: https://bricksafe.com/files/ibessonov/wip-moc-lamborghini-aventador-svj-2020/v12.pdf

It also meant that I can rework suspension and make it similar to 42115 Lambo. Which I did.

I made a better shape for doors and hiden mechanism that opens them. Doors are also properly angled now, looks much better.

I think that roof design is final now, I like how these angled panels look. It's better in real life than on pictures. Rear section is pretty much complete.

Of course, I still need to refine some minor things and build the internal frame that will hold all this stuff together. Tail lights are too thick but I can live with it :)

So yeah, that's the quick update, thank you!

Edited April 16, 2021 by ibessonov
typos

[OnyyX]

I'm soo excited for this. FINALLY someone is making a 1:8 scale Aventador. The front end is going to be a hard one I bet. If you have seen Lachlan Cameron's version (not to disrespect), the headlights are definitely a challenging shape and it is a hard one to pull off. I really hope you do a good job, and judging by what you have done so far, this might be my favourite technic car to date. Nice use of those new panels from the Senna GTR on the rear. You definitely nailed the back end.

If I had to constructively criticise anything, something tells me the doors should be a little bit longer, maybe 2 studs or more. I also think that the original tail light design was a bit better but up to you.

Great work and I really hope you finish it.

Edited May 11, 2021 by OnyyX

[930 Turbo]

any progress?