Originally Posted by
captain america
The system was borrowed from the 1/10 electric buggy. The design was initially to allow the battery packs to fit under the drive shaft, allowing for a narrower chassis and central weight distribution.
On the 1/8 nitro buggy, the benefits are less pronounced, but it does allow for the battery pack to fit in a location it wouldn't have been able to with a regular drive shaft set-up. Also, the raised shafts mean that the center diff gear is also raised, negating the need for an opening in the chassis, so less possibility of a stone getting in and damaging the gear teeth.
the way the shaft connects with the pinion looks very similar to what XRAY & Serpent have, but reinforced with aluminum braces & inserts so hopefully less stress on the pinion bearings.
thanks guys that is exactly what i was trying to understand