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SuperCar 2011 - Complete chassis
First part of my new supercar, contains chassis and both axles. New generation is comming...
About this creation
After more than a year without any new MOC post here, I come back with a brand-new Supercar: new features never seen before, construction based on real designs, more realistic and functional new axles, new brakes, new gearbox and more.

Here is a video I made a few months ago as an introduction to this presentation:



I started to design this car just after finishing the Veyron MOC, so it have been under construction more than a year and it is still not finished.

I am copying a real car again, but this time in a much more accurate way, as the chassis structure and suspension geometry, including steering wheel turnings, that spins lock to lock!

In this first article you can see the chassis along with the two axles. Throughout May I will publish a second and bigger article with a finished car.

Part 1: Unibody Chassis

Here you can see the car's unibody chassis, which is the most important and the more complicated part. It has to be very rigid but with minimal size and volume so as it has to leave maximum space to another mechanisms



In this new car the final volume of mechanics and electrical items is almost double than in the Veyron, especially with the new gearbox and whole drive, witch is more or less 25x19x9 studs single block. Even has enough space for a large interior and other mechanisms, keeping a 74x31 studs final size.



Part 2: Front axle

I have designed a McPherson axle for this car, like used in the copycat car. I have never seen any one as compact and usable LEGO made ever.

An example of a McPherson axle:



I have used 6.5L shock absorbers, because 9.5L are too long and disproportionate



Shock Absorbers are also turned 90º against rotation of the lower arm in order to receive only compressive forces so as another different can't force them



The new disc brake system is also seen in photos, actually I will not explain how it works, keep it for in next article. They work exactly the same than real ones and are more compact than Veyron's, they can be used in smaller wheels than 8448 set.

Extra Features:

Now "Based on real designs" takes more sense in the video

Also the axle has features only found in real cars (as I know).

- Camber angle

This is very important in real cars because it improves turning grip. If you want to know more, you can search on the Internet



With my settings camber is about 2º negative



This particular angle is not fixed, can be modified by changing the 4L bar that holds the shock absorber instead of another parts which different diameter, for example if you change a 4L axle, camber fades until 0º.

- Ackermann steering

This is the most popular function. Concept is that when turning, inner wheel turns more than outer.



I've built the steering axle 2 studs longer than distance between the rotation direction axles



Simple and very functional

- Caster angle

With this system the turning axis direction is not only vertical but also sloped.



In this case I get the caster angle by putting back half stud back the upper turn point than the lower turning point. With this I get a 3.3º caster angle, you can see as reference the average angle of real cars, wich is between 2 and 4 degrees.



Last but not least, note that despite all these functions, axle final design is very rigid and reliable.

Part 3: Rear axle

This axle is also the same type used by the copycat car.
This is a multilink axle type, which is much more realistic and also allows me to get away from the typical double-arm axles used in almost every Technic MOC.



A multilink axle consists of a group of arms that when work together get the wheel always "guided", if you want more accurate information you can find on the Internet





I have used 4 links, two technic links placed diagonally and up, and two liftarm place down building a double arm.

This axle has only an extra feature, the camber angle, in this case is less than in front axle, just 1º, as in a real car.



You can change the camber angle changing the inclination of the upper links

Note that the entire axle with its suspension, drive and brake system takes only 4 studs wide, it is placed just under the gearbox.


Finally some pictures with all parts together.







I hope you liked the car and the car design short lesson :)

Here you can see more pictures and bigger:

http://www.brickshelf.com/cgi-bin/gallery.cgi?f=471737

As you have appreciate many of the photos are taken from a CAD design, I have used SR3D.
The chassis and axles files is available for download here:

http://dl.dropbox.com/u/33324281/Porsche911_chassis_axles.zip

Warning! Digital file contains nearly 1100 pieces, if you don't have a powerful PC you can't open it properly.

Also you can find more information in my blog:

sheepo.es

If you have any comments or questions please write to sheepo_86@yahoo.es



Comments

 I like it 
  April 22, 2012
what program can open taht file ?
 I like it 
  April 22, 2012
thanks man its relly is a nice moc
 I made it 
  April 22, 2012
Quoting zozet vangsfeldt can i download the instuction on another site for megaload is shut down ?
Sorry I forgot change the link, you can download it here: http://dl.dropbox.com/u/33324281/Porsche911_chassis_axles.zip
 I like it 
  April 22, 2012
can i download the instuction on another site for megaload is shut down ?
  February 10, 2012
I'm a trained mechanical engineer. I am astounded at the brilliance of your designs. You should be very, VERY proud of yourself. From a teaching aid perspective- your BRILLIANT designs can be used to teach esp. teenagers about kinematics & physics- which they will enthusiastically participate & enjoy and very easy to understand!
 I made it 
  December 15, 2011
Quoting Thomas Graafland WOW!! Can't wait to see the whole car!! You used some ingenious technics!!! I like the fact that the suspension is inspired by real cars! Not many people can do that!!! Even after all the explanations I still can't understand anything from the angle-stuff... Is the car 4 wheel drive? Hope the car is going to have some Power Functions too!! :-D
You can see the finished car here: http://www.mocpages.com/moc.php/267136
 I like it 
  December 15, 2011
WOW!! Can't wait to see the whole car!! You used some ingenious technics!!! I like the fact that the suspension is inspired by real cars! Not many people can do that!!! Even after all the explanations I still can't understand anything from the angle-stuff... Is the car 4 wheel drive? Hope the car is going to have some Power Functions too!! :-D
 I like it 
  November 7, 2011
Awsome! You should try to use one of the pneumatic engines that people use in this one instead of the power functions. It my be a little bit faster. And even closer to a real car.
 I like it 
  May 3, 2011
We can't wait, where is your article
 I made it 
  May 1, 2011
Quoting Ben Shaw Its May! Come on! The suspense is killing me! How near to finishing it are you?
LOL you are right. I presented the car officialy yesterday in the spanish MADbrick fair. You need to wait a few more days, at most one week to write the article and translate it ... sorry :(
 I like it 
  May 1, 2011
Its May! Come on! The suspense is killing me! How near to finishing it are you?
 I like it 
  April 8, 2011
Hi, I was just wondering in regard to your bugatti Veyron, wether you could take a picture, of the PF motor which controls the brakes. My replica stubornly will not let me install it, If possible could this picture include the fitting to the front brakes, and the two universal joints if possible. I would be extremely grateful If you could do this, and with regard to your newest supercar (whatever it may be), I am very much looking forward to it.
 I like it 
  April 3, 2011
oh ok :( but you're still awesome
 I made it 
  April 3, 2011
Quoting the ant hi. i want to make a car but i was wondering about the wheel adapter (i believe it is called that) because i tried making one but i failed. it would be awesome if you told me a good tip about making one.
I am sorry the ant, but I couldn't understand you :(
  April 3, 2011
i have never seen anything like it :O but i wonder how the friction brakes work. i see that the rubber thingy somehow moves closer to the grey wheels,causing the wheel to slow down. but how do you get it to move? i also failed at loading your file in rs3d :P rated 5/5
 I like it 
  April 3, 2011
hi. i want to make a car but i was wondering about the wheel adapter (i believe it is called that) because i tried making one but i failed. it would be awesome if you told me a good tip about making one.
 I like it 
  April 2, 2011
This chassis looks pretty awesome, congratulations man. I wonder if that chassis gives live to off-road cars too. By the way I'm a portuguese guy from lisbon.
 I like it 
  March 26, 2011
cant wait till the reveal, its goin to be sweet
 I like it 
  March 23, 2011
Love the chassis design so far, can't wait to see the final piece. Do you think you could make a quick video showing the steering and functions in action? Or will you do that when the car is complete? Having difficulty visualizing lol. Anyway, best of luck!
 I made it 
  March 12, 2011
Quoting Sander van Kreijl [...]
Ok, you're right, I didn't upload instructions to add motor because I did not think were necessary. When I have a free moment I'll upload it, and add some more modifications...
 I like it 
  March 11, 2011
Hi, Well the shifting mechanism itself is clear to me, becasue of the instructions. What the instructions don't show, is how the PF XL motor on the left side of the Veyron, just behind the drivers seat makes the gear selector move, just like a stepper motor. That's the piece I'm referring too, and which isn't in the instructions if I'm not mistaking...
 I made it 
  March 9, 2011
Quoting Sander van Kreijl Still, can jou shed some light on the gear shifting mechanism of the Veyron?
The veyron gearbox has its own article, you can see it in My Lego creations, do you need more information?
 I like it 
  March 8, 2011
Very impressive what you have accomplished so far. I did the caster angle in one of my cars as well, but that's just simplistic as i see how you managed the whole front suspension layout. Also very cool to see a working mcpherson suspension. I tried that once but it does take up way too much space for the model I was working on. I'm realy looking foreward to see what more technical features you will bring us.
 I like it 
  March 8, 2011
Well, you got me fooled there then... there goes my money. Off course it can't be a Carrera, otherwise there would be no use in leaving that much space in front. The front gives enough space for a few PF xl's and some battery boxes, I reccon. Still, I don't think it's a BMW, Audi or Mitsubishi... just because you mention it, and I'm sure you won't give us a real clue up till may... This is like the last week of november, and a six year old wondering what the Sheepo-santa will bring... Still, can jou shed some light on the gear shifting mechanism of the Veyron?
 I made it 
  March 8, 2011
Quoting Sander van Kreijl At this moment it's tough to tell what it is: two seater, mcpherson on double wishbone in front, 'multilink' in rear, so no Lambo' or Ferrari. Rear or MidRear engine mount.... 4 wheels, all driven and with disc brakes. I'm putting my money on a Porsche Carrera 4S. Just two more months... ;-)
The car has the gearbox on the rear axle, but it is not necesary that the engine stay there too... you forgot other models with the same features like BMW 3 Series Coupe xDrive, Nissan GT-R, Audi TT Quattro, Mitsubishi 3000GT and some more... :)
  March 8, 2011
At this moment it's tough to tell what it is: two seater, mcpherson on double wishbone in front, 'multilink' in rear, so no Lambo' or Ferrari. Rear or MidRear engine mount.... 4 wheels, all driven and with disc brakes. I'm putting my money on a Porsche Carrera 4S. Just two more months... ;-)
 I like it 
  March 7, 2011
Wow! So very well thought out and deeply impressive. There's a lot of engineering here.
 I made it 
  March 7, 2011
Quoting Victor ruiz Wow. you really are the man when it comes to replicating the world's hardest to replicate technical features of a car to lego. How did you manage to do the wheel tilting thing? and one more thing...what car are you going to build out of that chassis??? Keep up the great work!!
The car I am copying is absolutely secret ;), You discover it in may.
 I like it 
  March 7, 2011
I like the way you approach your build. Is much like the way I'm currently building, although I cannot match your LEGO stash, building pace and technical ingenuity by far. Looking forward to the end result. Thanks for making me (re)discover ACDC ;-) Concerning your Veyron-gearbox: can you show how the stepper selector is built? I've been trying and trying but can't figure out a proper way...
 I like it 
  March 6, 2011
Wow. you really are the man when it comes to replicating the world's hardest to replicate technical features of a car to lego. How did you manage to do the wheel tilting thing? and one more thing...what car are you going to build out of that chassis??? Keep up the great work!!
 I like it 
  March 6, 2011
That's amazing! And thanks for l3b file! Can't wait to see the complete model.
 
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