Shaft driven turbo?

[FIREBREATHER60]

In my attempt to build something truely unique whilst reaserching i have stumbled upon shaft driven turbos, obviously with the gain of boost throught out the whole range but is the draw backs of losing some horses (because of the fact the it is adding extra load to the engine, and the fact that top end isn't as good) still make it worth doing or at least looking in to deeper?

Any advise or exsperiences would be great help.

Thanks

[E30Mark]

So what's the difference between a shaft driven turbo, and a supercharger?

[FIREBREATHER60]

Damn good point!!

Thanks

[gcorky]

So what's the difference between a shaft driven turbo, and a supercharger?

not a lot!

[Turbo-Brown]

Presumably we're talking about centrifugal superchargers here, the kind of thing Rotrex make?

Certainly a darned sight easier to plumb in than a positive displacement SC as the throttle doesn't need moving or any special bypass arrangements.

They do still suffer from something of a lag though as at lower engine speeds, much like with a turbo, they're not really moving any air.

[FIREBREATHER60]

So to say that the only real differnce in it is the fact that altough it is in princiable a sc you get the bennifits of lower cost ( no manifold to buy and if your good you can make up the brackets) and you get boost throught out the range?

[Turbo-Brown]

Not quite throughout the rev range as they are extremely inefficient at low speeds so you do still get a lag of sorts until the compressor wheel gets to a speed where it's efficient.