Quote:
Originally Posted by pepe
Hello! from my ignorance of mechanical issues
a question .... OEM transmission shaft, consists of two parts and a rubber gasket ... right? why?
which is the reason why Japanese engineers (which should not be too dumb), make this piece into two parts?
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The two-piece driveshaft reduces NVH (noise/vibration/harshness). Most car owners want as little NVH as possible. The percentage of enthusiasts modifying their cars is a small fraction of overall automobile owners. Cars are built for the masses.
Carbon fiber notwithstanding, it's less expensive to engineer and produce a one-piece driveshaft. We have the more expensive option from the factory. Rest assured that Japanese engineers (or any auto engineers for that matter) aren't dumb and do these things with a purpose in mind.