Aventador custom chassis drawings for 500 USD / 470 EUR

[plans4sale]

 A major update with newly created chassis plans plus assembly drawings with dimensions is coming for all of my customers this Monday. Some of them will replace the old versions you already have, as I made some improvements in the chassis design recently.

[plans4sale]

 Dave, check your e-mail later tonight. I will send you some bonus drawings as well.


 Eric, thank you for the question. This reminded me that I forgot to mention something important about the glasses. Let me do it now. I tried my best to make the 3d glasses as close as possible, but there is no possible way to make the size and curvature of the glasses 100% same as the OEM Aventador glasses with using referene photos only. Ideal would be to have 3d laser scan data as reference, but I have no access to the real car or glasses. Having that said, for the real built replica there must be custom glasses made. I'm not sure if some OEM glass from other car models will be suitable. Together with my body plug plans I will supply the following glass drawings:

- 3d NURBS surface models (IGES) and Mesh models (STL) of all glasses.

- PNG image drawings of the glasses with basic dimensions and bend radius of the door glass.

- AutoCAD DWG drawings to print and cut slightly flexible 5-8 mm thick wooden cross-sections, then assemble together to make patterns for each glass. These are suitable for bringing it to a glass shop to make you custom glasses. No need to fill them out with foam etc, because glass shops need only the border shape plus 10-20 reference points across the surface.

 It's recommended that all the glasses are available upon finishing the plug, in order to use them as reference for accurate sanding of all the edges of window sills next to the glasses. This will allow for perfect fit to be achieved when the composite body kit is made.

 I made some quick samples just to show how the wooden pattern for the front windshield would look like. The actual drawings will include extra details like channels and ribs for accurate assembly (like those shown here http://imageshack.us/a/img155/261/dsc00509dd.jpg). The first image shows the bottom plane that is mandatory in order to ensure symmetry of the vertical planes, i.e. to avoid making it like parallelogram.
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[aeauto]

What glass will fit this body you are drawing?  Is it going to be OEM Lambo glass or from some other car?

[italianknightrider]

well it,s tomorrow !!

[plans4sale]

UPDATE 5:

 I improved the way the main roof pillars mount to the chassis, in order to allow 14 mm more free room for the door's window sealing next to the triangle window. The OEM Aventador sealing is too thin and considering that most builders will have to use donor car sealing which is usually thicker, having more free room in this area is crucial. Now 4 of the mounting plates that connect the roof to the main chassis are different, as well as 4 of the chassis tubes. Roof tubes are unchanged and remain in the same position.

 I finished with designing all the roof wooden patterns and made the DWG drawings for them. Currently updating the plans for the modified chassis tubes and will send them in next days to existing customers.

 Also, one of my customers is selling his partially finished Aventador chassis at MM. The remaining drawings that are due to finishing I will send to the eventual new owner. You can read the original post here: http://www.madmechanics.com/forum/mall/18012-aventador-chassis.html#post195109

http://youtu.be/MIrFXqJ29rs

[plans4sale]

 UPDATE 4:

 All round roof tubes are completelly redesigned now, plus another 12 square and rectangular chassis tubes and 6 metal plates that connect to the roof tubes. The drawings for the roof tubes are completed and currently I make the paper patterns that will be used as guides for cutting the ends of all round tubes. AutoCAD 2d DWG files will be provided to print them out on paper. I also redesigned most of the large wooden patterns that will guide you to place the roof tubes at their exact position in the 3d space. They have been just tested in real life and work perfectly accurate, as seen in the attached photo and in the following build thread http://www.madmechanics.com/forum/build-diaries/17361-aventador-chassis-14.html. There will be a nice set ot drawings sent to existing customers in the following days.

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[plans4sale]

UPDATE 2:

I created 3d NURBS glasses with even curvature, in order to validate the bending radius and to ensure that the power window will not collide with the door skin when moved down. I figured out that the A-pillar of the 3d model from the video game "Forza motorsport 4" is too off of the proper shape, so there will be some new improvements in my 3d model to follow the proper shape of side glasses, and this will also force me to do changes in the roll-cage of my chassis design. I will update you soon with the final version of the roll-cage. Below is a quick video showing the problem area. Builders, beware when using 3d models made of other people to create plugs. Always check for possible errors around the glass and door area.

Aventador custom glasses

UPDATE 3:

 Here is the new roof pillar tube which I made recently. It follows the changes on the A-pillar of the body and improves the visibility by up to 27 mm around the middle of the A-pillar. This lead to some changes on the chassis underneath, such like different location and/or shape of 4 tubes and 6 mounting plates.

Aventador roof pillar

[plans4sale]

UPDATE:

 As I'm progressing with the drawings and getting close to finishing them out, the current pre-order price of 370 USD or 280 EUR will be kept by the end of this working week, Friday, 2nd August. From Monday, 5th August, the plans could be pre-ordered for 450 USD or 340 EUR. After I make them all, the plans will sell for 500 USD or 380 EUR.

[plans4sale]

New update:

1. Recently I designed completelly new roof tubes (improved strength and visibility), as well as new metal plates (easier to weld, cheaper to laser cut, and reduced weight) that connect the roof tubes to the chassis. They are coloured in yellow in the pictures below:
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2. Also new are the tube end patterns that will help you cut precisely the round tubes at both sides, no matter how complex their shape is. These patterns are designed to be CNC-laser cut (or printed on paper and then overlayed on sheet metal and cut manually) from 2-2.54 mm thick sheet metal. This is especially helpful in the case of building multiple chassis. But you can use other materials instead (such like cardboard), in order to lower the cost.
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 Shown in these short videos is what makes the patterns so useful:

Tube end pattern 1

Tube end pattern 2

3. I was asked by someone why I'm using a fairly straight tube behind the upper end of the front windshield, rather than using an arc tube like the rest ones seen on my shassis. The answer is, this is due to the untypical shape of the Aventador's roof which is concave at the middle, hence an arc tube is not suitable for this application.
http://imageshack.us/a/img153/6563/88g.png

4. And here is a sample drawing for the new tube forming the main roof rail:
http://imageshack.us/a/img221/6804/ncy.png

[plans4sale]

Steel weighs 500 lbs, per cubic foot. 327 CC is equal to about .01 Cubic feet so you save about 5 pounds by cutting the plate and putting it inside the tubes. If the plate is properly welded to the tubes I don't see any strength advantage to putting it inside the tubes rather than on the bottom. If you put the plate on the bottom of the tubes it makes the bottom of the car smoother for less air drag.

 Thank you for taking part of this topic with useful information. I estimated (approximatelly, since it's still in CAD phase) about 25-30 kg of saving when using separate sheets for the whole chassis. While this is not too much on paper, it's still better to have the car a bit more lightweight to boost performance and handling.

 With regards to the strenght factor, by using separate sheets between the tubes you UNLOAD a massive force from the tube welds since the sheets will act as a natural reinforcement to keep the tubes in place (this is true even if the welds were very weak). 

An additional replaceable protective composite panel is bolted at the bottom.

This is for both, better protection and earodynamics.

[aeauto]

Steel weighs 500 lbs, per cubic foot. 327 CC is equal to about .01 Cubic feet so you save about 5 pounds by cutting the plate and putting it inside the tubes. If the plate is properly welded to the tubes I don't see any strength advantage to putting it inside the tubes rather than on the bottom. If you put the plate on the bottom of the tubes it makes the bottom of the car smoother for less air drag.

[plans4sale]

Here is how you get 3 advantages when placing the floor sheet metal below the top side of the floor tubes (and NOT at bottom):

1. You keep the welds around sheets far from dirt and water. An additional replaceable protective composite panel is bolted at the bottom.

2. Increase stiffness. A chassis floor structure with sheets between tubes welded close to the upper side is stronger than a floor with whole sheet on top.

3. Lower the weight (since you remove the portions of sheets where the floor tubes go through).


 You place the sound-deading material inside the 5 mm tall holes above the metal sheets.


 This is CAD calculation of the volume of a whole sheet on top of the floor compared to the volume of 14 separate sheets laying 5 mm below the top of floor tubes (when using sheet with thickness of 2 mm):

(whole sheet) Volume = 1722.14437 cubic centimeters
(separate sheets) Volume = 1394.77973 cubic centimeters for 14 sheets

 With reparate sheets between floor tubes, you save 327,36464 cubic centimeters of metal. To give you an idea for the amount of saved weight, a 40x40 mm tube with length of 1100 mm has volume of 326.84594 cubic centimeters. If you measure the weight of this tube, you can easily see how many kg you save.

[plans4sale]

 Some good news for the European, Australian and all other builders who can't find Imperial size tubes.
 
 Due to the different tube standards in some continents, now there are two chassis designs and two types of plans - for using Imperial size tubes (inches) or Metric size tubes (millimeters). For short I call them US chassis and EU chassis. There are some subtle differences between both chassis. For example, where the US chassis is using tube 1.5 x 1.5" and wall thickness of 0.1" (38.1 x 38.1 x 2.54 mm) the EU chassis is using tube 40 x 40 x 2 mm.

[plans4sale]

Some good news, folks. The last night I was able to recover the information from one of my hard drive partitions and transfer the data to my new hard drive. Now I have all of my data prior early 2011 recovered. Unfortunatelly, everything I did from 2011 so far is still not recovered and I don't know if it will be ever possible to extract my works from there. Looking for news from the PC service where I leaved my hard drive. On the positive side, on my laptop I found copy of the Aventador 3d game model which I improved the last year, so now I'm ready to make the body plug sections again. In one day I will finish with the changes on the chassis (to make it same like the version I lost after the failure of my hard drive) and continue to supply my customers with chassis plans. Thank you again for your understanding and patience.

[plans4sale]

 Hello everyone,

 Last week a short circuit happened and my working desktop PC stopped working. Both of my OS, Windows XP and Windows 7, have been seriously damaged and since then I still don't have any access to the data inside my hard drive. Luckily, I have an older version of my Aventador chassis 3d model plus some of the early chassis plans on my laptop, so there will be some small delay in delivering the latter. From this project I lost only the final 3d chassis model (it had few adjustments around the engine bay that I remember and will apply to my backup model) and 16 plans that I can redo in the following days. However, I don't have any backup of my Aventador body plug plans and 3d body model (and everything I did since 2004), so I will have to redo the work from scratch. This means about two weeks of delay will follow for the body plug plans. My hard drive was sent to a PC service and after a week I will know if there are chances for my data to be extracted from there or not.

 I would like to apologize to all of my customers for the inconvenience with that delay and to reassure you that this is NOT scam, and I will deliver 100% what I promised. Thank you for your understanding and keep reading this topic for more updates.

 I also uploaded couple of videos and some photos to show you the issues with my PC. Hopefully this will be resolved. Until then I will be working on my laptop.

 Kind regards,

 Bobi


(videos)

Windows 7 not loading on my damaged primary hard drive

Windows XP not loading on my damaged secondary hard drive

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