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Originally Posted by CanAutM3
Cool tidbit, thanks for sharing 
Very smart folks at work here 
I guess one of the drawback of such a system in the increased inertia caused by the long shaft that slows down turbo response. Having the electric motor/generator on the turbo most likely compensates for the added inertia.
However, IMO, this setup would not be effective on a conventional non-electrically driven turbo and would result in too much lag. |
Have you seen the shaft size on many supercharger configurations? Granted, they are belt driven, but still - it's all about the engineering behind it.