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Since I'm in the mood to draw pictures, why would the GM version of the ZF DCT still have the transaxle mount used specifically on the Porsche 918 chassis?
The only reason I can think of is the ZF CAD models were done as a precaution. "Package protection" as someone else called it. GM wanted to make sure the unit would fit in the car in case they decided to use it in the future. Or it could have been done as a reference point for Tremec to design their transaxle housing. They may have needed to make sure the Tremec and ZF units had common hard points for things like the axle shafts.
Getting back to the point I've been trying to make....the mere existence of a ZF CAD model is not a guarantee the final production car will actually have a ZF transaxle installed.
Without more context on these CAD files, all we've got are guesses.
Seriously? You thought I was blind to the two of the four very obvious powetrain mounts? I specifically called that out, with big bold italic text, in my last post.
I guess I need to draw a picture. I know there are four powertrain mounts on the sub frame. That's why I said the transaxle doesn't have any brackets to match up with them.
The Tremec has a significantly different tail housing, with obvious mounting brackets. There are no corresponding brackets on the model of the ZF transaxle.
Yes, there are Jeff. I've used AutoCad and PowerCad for Years. You can clearly see all four engine mount bolts in both lower frame drawings. The lower left frame has one engine mount hidden behind the High pressure casting with only a very short tip of the fourth engine mount bolt sticking up above the frame. It is just a little nub sticking up above the view from that point of perspective.
Yes, there are Jeff. I've used AutoCad and PowerCad for Years. You can clearly see all four engine mount bolts in both lower frame drawings. The lower left frame has one engine mount hidden behind the High pressure casting with only a very short tip of the fourth engine mount bolt sticking up above the frame. It is just a little nub sticking up above the view from that point of perspective.
For the last time, I'm not talking about the subframe. I'm talking about the transaxle housing itself. There do not appear to be corresponding brackets anywhere on this part
Jeff, the Cad files are organized relative to component parts and assembled sections. When drawing with 3D CadCam software such as AutoDesk or whatever they are using they can turn off or on any component part to see what is behind that particular part. These Zerv leaks were riddled with images where they plucked certain parts off of the Cad file list to show a clearer view of what they were trying to convey. Proper color assignment relative to subsystems are of paramount importance for clear readability. For instance, all high pressure die casting that we are seeing in these views above are shown in a grayish blue and the connector extrusions are in a aqua blue. This system of color relative to components is critical in usage.
Jeff, there are four magneto rheological mounts for a reason. There is no such thing as a centered vertical mount. Since the engine and DCT/Transaxle are bolted together as one entity, the two right side MR engine mounts function together against the two left side MR engine mounts. A high torque engine will naturally rotate itself under a high torque load. These MR engine mounts will self adjust in height from side to side to stabilize the engine to a absolute flat planar position. This in turn keeps the half shafts and wheel hubs in a optimum position relative to the roadway conditions. All of this has been revealed and discussed before in my list thread. Here's a thread on the total ZF system. Pay particular attention and review the Lemforder engine mounts that integrate with the entire suite of ZF components.
Because the Vette will require such a mount with the link attached between the gearbox/engine mounted to the magnesium subframe casting and the main structure for the same reason the Porsche requires it. So now there are two things you know nothing about, CAD and structural engineering.
Don't take it too hard, Jeff V. Shaka and Skank are well versed in this end of the game. It will be a blast to see the final product when it's released.
There's that vertical powertrain mount again. You know, the one that's not supposed to exist, despite copious photographic and video evidence to the contrary...
Preceded and followed by several posts with photos and video captures of centered, vertical mounts.
It is not a vertical mount. It is a hard point designed for horizontal loads on the longitudinal axis. Its duty is other than those of the 4 other mounts. The CAD subframe file shows the 4 mounts.
Preceded and followed by several posts with photos and video captures of centered, vertical mounts.
Four MR engine mounts are clearly shown on the Zerv Leaks. I'm sorry that you are incapable of reading a CAD drawing. Two MR engine mounts under the engine and two MR engine mounts under the DCT/Transaxle. You flunked your eighth grade drafting class didn't you?
Four MR engine mounts are clearly shown on the Zerv Leaks. I'm sorry that you are incapable of reading a CAD drawing. Two MR engine mounts under the engine and two MR engine mounts under the DCT/Transaxle. You flunked your eighth grade drafting class didn't you?
I don't know how many more times I have to acknowledge the 4 mounts on the subframe. I don't know why you keep going back to that. Now, I'll ask again...what's the round thing on top for? Sure as **** looks like a fifth, vertical mount to me. Or maybe you can ignore my question yet again and instead give us some long winded self congratulatory essay explaining you divined the supplier, the manufacturing location, the specific design release engineers, and how those 'discoveries' reveal GMs choices on everything from alignment specs to button finishes...all from one fuzzy, incomplete CAD leak.
BTW, I passed my middle school drafting class with minimal effort. Early. I worked with the teacher to get all the assignments ahead of time, completed them in half the semester, and spent the other half working in the computer lab.
Four MR engine mounts are clearly shown on the Zerv Leaks. I'm sorry that you are incapable of reading a CAD drawing. Two MR engine mounts under the engine and two MR engine mounts under the DCT/Transaxle. You flunked your eighth grade drafting class didn't you?
10-08-2018, 11:41 PM
