Here's something interesting from a UK magazine called, "Fast Car."

New supercharger really shifts
05/05/2006
Imagine a forced-induction car with high boost all the way across the rev range. How'd they do that? By being damn clever, that's what: They bolted a tiny gearbox to a supercharger, with tremendous results!

It is bleedingly obvious when you think about it. When they discovered that internal combustion engines were only efficient at certain revs, they bolted on a gearbox to be able to drive a car at different speeds. So why has it taken so long to do the same to a supercharger? Beats us, but we're damn pleased that Atonov has seen the light, and paired a high-capacity supercharger with a tiny gearbox.

Atonov is showing off the world's very first two-speed supercharger, allowing the efficiency of the supercharger to remain high at all engine speeds. What they have done is to take a highly efficient centrifugal supercharger, and pair it with a tiny automatic gearbox. The result is a tremendous boost right from the lowest revs all the way through to redline, and no lag to get to the power, either.

The new supercharger setup ain't cheap (you are looking at between

 

Interesting. But if you think about it, it is one of those "Duh, why didn't I htink of that" ideas. Makes total sense to do it, albiet more complicated. And there would definatly be an issue if the gear stuck under hard acceleration or high RPMs.

 

Make it a manual 2 speed shifting supercharger. That way, I'll have an excuse to kidnap a midget and have him shift gears with his tiny little hands!

 

Put the gear lever and shift light in the trunk and my Trunk Monkey can do it.

 

there would be a very noteable dropoff in power right after the shift presumably when you are halfway through your gear...

 

Unless Audi designed a double clutch system, lol.