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Unread 06-22-2009, 02:01 PM   #1
El Vikingo Tropical
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Default How light can we make a 951 (900kg ?)

A year ago I started to build a 951 for racing with my friend Hákan.
As Hakan is an aeronautical engineer he are usual of weight saving on he's projects. .
The idea is to have a weight of 900 kg and 350cv to get that we are making an compleate carbon fiber bodywork.

The fact is:
The factory 951 weighs 1300kg and has 250cv which gives a result of 1300/250 = 5.2kg per hp
With 900kg and 350 hp you has= 900/350 that make 2.5 kg for each cv that is half the original power / weight .............
That's an power increase of 50% and with important improvement of handling and braking.

Here is a list of what is the weight of diferent items in an 951 ( In KG)
Rear seat: 12 kg
Carpets and privacy front: 21 kg
Carpets and insulation Luggage: 23 kg
Jacks & Accessories: 3 kg
Interior stuff (roof, below the plate glove, glove box, visors, lights, trunk / hood, cable 5 Kg ...):
Speakers (4): 1 kg
Door panel: 1.7 kg
Spare wheel and tools: 15 kg
Light projector and a motor mechanism: 4 kg
Heating + panel: 4 kg
Air conditioning: 12 kg
Rear window: 25 kg
Windscreens: 12 kg
Front hood: 24 kg
Sunroof: 10 kg
Front Bumper: 14 kg
Bumper rear: 14 kg
Rear deck: 14kg
Front fenders: 2x 8kg
Rear fenders: 2x 7kg
Doors 2x
Seats: 2x 25kg
Dash board and instuments: 10kg
Generator: 7.2kg
Fuel tank: 10kg

Thats make more than 335kg or 735lbs and we have cutted of much more.
Ower 944 carbon fiber front fender weights 0.8kg (1.76lbs)

Saludos Cordiales
Jan K
rsr-sport.com
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Unread 06-22-2009, 04:36 PM   #2
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Jan, keep posting on this. It will be interesting to see what you finish with. I have looked at your website but couldn't see any 944 parts? Do you have a link? I am looking to do something similar. Obviously you can take out all the parts you mentioned above, but you have to put something in their place like hood, hatch, seats etc etc. It will be good to see just how light you can get yours down to.
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Unread 06-22-2009, 05:29 PM   #3
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I saw a 944 hood on there but that was it?
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Unread 06-23-2009, 04:48 AM   #4
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In this moment we are making every thing in fiberglass to test all the moulds and fitting.
The only things that we have finished in carbon fiber is a hood (3.3kg) and a front fender (0.8kg).
According to we finishing the pieces I publish it in the Web.
As we have the work shop full of ours clients cars this one have to wait some time.
An other problem is that my friend Hákan are working in the aircraft industry and dosen´t have to much time over.
We CadCam designe every thing firts and calculate strength a weigth.

Last edited by El Vikingo Tropical; 06-23-2009 at 02:50 PM.
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Unread 06-23-2009, 05:10 AM   #5
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Sounds good Jan.

...er I am 100% sure you are writing way better than if I tried it in your language, but you might change 'udder' to 'other'. One means the part of a Cow that the Milk comes out of.
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Unread 06-23-2009, 02:49 PM   #6
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Ok
I`m gone change that one
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Unread 07-08-2009, 03:18 PM   #7
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This is the first finished pieces for our project making 900kg. 951
The hood fender [IMG][/IMG] 3.3kg and 0.8kg.
All pieces are made of carbon fiber

[IMG]Click the image to open in full size.[/IMG]

[IMG]Click the image to open in full size.[/IMG]
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Unread 07-08-2009, 03:38 PM   #8
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Maybe this can help..
Attached Images
File Type: jpg 944 weight savings4.jpg (195.4 KB, 105 views)
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Unread 07-09-2009, 02:02 AM   #9
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Nice looking parts but wouldn't it have been adviseable to take the side impact strip off before you made the molds?
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Unread 07-09-2009, 02:48 AM   #10
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nice stuff keep us posted
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Unread 07-09-2009, 05:38 AM   #11
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Default Carbon fiber 951

We left the strip since the curbatura reinforce the doors, as they are made in the minimum possible of material to reduso weight.

Last edited by El Vikingo Tropical; 07-09-2009 at 06:17 AM.
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Unread 07-09-2009, 05:45 AM   #12
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Are you looking at producing any widebody panels in carbon fibre?
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Unread 07-09-2009, 06:09 AM   #13
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This is great stuff. I'm hoping you will incorporate some nice aerodynamic features in the molds. Such as vents in the fenders etc.
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Unread 07-13-2009, 12:47 PM   #14
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Default Wide body

The rear fender are 45mm wider than the original and we are making them with air intake for the brakes.
The pic is from the first premould befor that the real mould is made.
The original rear fender has to be eliminated.
The new carbone fender has the wheel arch cut out 20mm in order to low the supension more.

[IMG]Click the image to open in full size.[/IMG]

Click the image to open in full size.
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Unread 07-13-2009, 04:00 PM   #15
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So how much of the original metal fender do you leave?
Nice progress. Keep it coming.
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