"NEW" Cayenne Aluminum & Carbon Fiber Drive Shafts
12-09-2014, 08:51 PM
#121
Three Wheelin'
Surprise, surprise. You actually substantiated a post for once. I was not aware of that thread. So let's say that the average failure is indeed around 80-90k miles for the first one like you've said. Is that acceptable? Do you really think that a properly balanced, single-piece shaft that's stronger than the OEM one wouldn't last longer? Why not? I'm all ears.
You can also observe this effect inside your Cayenne if you playback a 33hz note at a decent volume with a woman inside (I bet you didn't know that..). So yes, I'm not a retard and I fully understand the concept of Resonance. I also fail to see how this relates to a perfectly balanced drive shaft. These 1 piece shafts are tested for any resonances between a range of 0 and 9500 RPMs. So while natural resonances can still exist in the drive shaft outside of that range, they will never exist within that range or during driving conditions in any Cayenne. That is, unless you can manage to make your drive shaft spin at a rate faster than 9500 RPM's...in which case I'd love to know how you managed that!
Resonance cannot exist without a cause. The helo and Tacoma Narrows bridge both had simple causes. A perfectly balanced drive shaft in a Cayenne has no cause to oscillate (For lack of a better term). The biggest reason I see for Porsche not producing these as original equipment is because it would add to the production cost and cut their margins. A 1 piece drive shaft demands higher quality, and with that comes added cost. That's not even counting the additional R&D, and material cost.
Resonance cannot exist without a cause. The helo and Tacoma Narrows bridge both had simple causes. A perfectly balanced drive shaft in a Cayenne has no cause to oscillate (For lack of a better term). The biggest reason I see for Porsche not producing these as original equipment is because it would add to the production cost and cut their margins. A 1 piece drive shaft demands higher quality, and with that comes added cost. That's not even counting the additional R&D, and material cost.
12-09-2014, 10:42 PM
#122
Rennlist Member
A Cardan every 65K isn't too bad but we all like to see improvements and I for one would like to keep hearing feedback on the lindsey (The Driveshaft Shop) shaft... If the feedback on the Lindsey shaft is great that may very well be my next shaft. Only time & mileage will tell but both Lindsey Racing and The Driveshaft Shop have great reputations.
12-10-2014, 07:59 AM
#123
Moderator !x4
Point taken cheapass
