It's lighter & stronger than steel.
It doesn't vibrate, at any speeds.
It's made from the highest quality carbon.
It can still flex.
The SMG3 was peak something. It got overshadowed by the MDCT and most enthusiasts gave up on it.
I doubled down.
In this Special Series, I chat about what makes the SMG3 the best of its time and atrocious per current standards.
I unbox and cover the design features of the carbon driveshaft and document the install procedures. Lastly, I recorded a few videos to support my driving impressions.
- Matt / @m3_epoustouflant
The tube length was adjusted between the transmission types and chassis configurations.
The installation of the YFCM carbon driveshaft was straight forward with no modifications required. It has mission-critical validation steps.
Each driveshaft is individually tested on YFCM's proprietary machine. They are spun to over 8000rpm as a complete assembly.
The flange is a self-locking, sealed design: it locks over the carbon tube. It eliminates all probabilities for the tube to spin free of the flange, no matter the torque.
M. Lee is the man behind YFCM Composites Technologies and the patent holder to the signature technological innovations.
He also operates an industrial automation company in Taiwan. He used his knowledge to develop proprietary stress testing equipment specific to automotive carbon tube applications.
YFCM has been the manufacturer all along for the MFactory V2 that was acclaimed by 500+ M3 V8 owners for years.