Recent content by CTCH

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    VW W12 to Porsche G86.20 transaxle

    Double checked everything and asked Chris to machine the flywheel and adapter plate for me. The adapter plate (in green) mounts to the G86.20 with countersunk bolts. The G86.20 with the mounted adapter plate then mounts to the W12. I wanted the mounting plate thickness to be 0 and mount the...
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    VW W12 to Porsche G86.20 transaxle

    That is exactly the gentleman I am working with! Removing the starter is really a nightmare on these engines - it requires taking the headers off! I tried without, but no luck. As such, my idea is to mount the starter wheel on the harmonic balancer and relocate the starter.
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    VW W12 to Porsche G86.20 transaxle

    Got the mounting plate in between the W12 and G86.20 figured out. 3x of the bolts match, but the adapter plate is still needed. I kept the thickness low - its 10mm. The green plate is the adapter plate. The blue geometry is the W12 flange. Also got a supplier that can make the flywheel, etc...
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    GT40 Chassis CAD file

    Thanks for the link. So far, I have two different GT40 frames in CAD. They are quite different from each other. Unsure if the red one (all round tubing) "is real".
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    GT40 Chassis CAD file

    Thanks for sending this to me. This is made from 40x40 mostly, quite similar to the Prova/Lorico frame I am working on. Unfortunately, I have no CAD assembly of this frame here. Does anyone have a CAD assembly? I do have a second design in CAD that is made from round tubing: If...
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    VW W12 to Porsche G86.20 transaxle

    Some more numbers on torsional stiffness: The base frame has about 2300 Nm/degree and the fully paneled one has almost double with 4400 Nm/degree. Original Countach had 2600 Nm/degree (also had no panels, only tubes) McLaren F1 had 13500 Nm/degree Porsche 911 Turbo (2000) 13500 Nm/degree...
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    GT40 Chassis CAD file

    Yes, I added these numbers to my post!
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    GT40 Chassis CAD file

    I would run an FEA simulation to understand torsional stiffness as compared to the Prova/Lorico chassis I am using. Here some more info: https://www.gt40s.com/threads/vw-w12-to-porsche-g86-20-transaxle.56902/page-3#post-594167
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    VW W12 to Porsche G86.20 transaxle

    Frame with all "stressed panels" and additional members comes in at 160kg in steel. Not super light weight - how does that compare to the GT40 replicas?
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    VW W12 to Porsche G86.20 transaxle

    Thanks for the comment, tried some panels - makes a significant difference. Added a bottom "stressed panel" (1mm steel or 3mm aluminium) Added side panels then additionally Added panels and additional members on the front and at the rear Outcome with respect to baseline - almost...
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    VW W12 to Porsche G86.20 transaxle

    Checked the torsional stiffness of that frame today. The front left damper attachment point is pulled up with 1 ton here, whereas the other 3x damper attachment points are not allowed to move. The front left point of the frame deforms almost 70mm according to that model. Stresses exceed...
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    GT40 Chassis CAD file

    I would appreciate receiving a copy. Yes, I would definitely upload to GrabCAD and also upload them here. The more upload areas, the better in my view.
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    Corvette C5/C6 suspension for GT40

    Thanks, found them https://www.bremar3dscanstore.com/all-scan-files
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    VW W12 to Porsche G86.20 transaxle

    Absolutely, that makes sense. I am considering using a 5mm CFRP sheet for that: https://www.carbon-composite.com/Carbon-Platte-5.0mm/CP050-1 Unsure if this is common?
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    VW W12 to Porsche G86.20 transaxle

    Thanks for the reply. Can you explain what you mean by a stressed panel? Do you mean a sandwich panel? Please let me know.
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