[PonyBoy1574]

I was reading a artical in Car and Driver about the mercedes-benz e55 amg and when they talked about the SC on page 56 I Quote "Superchargers at low boost can be power parasites, so AMG added an electromagnetic clutch to the blowers belt driven pully. It's not engaged until the engine computer decides you really want all that power." How think ye all on this? Is this a new idea or has it been done before? how exactly does it work?

[Tiger]

From what I know the only time a supercharger is really a power robber is at idle. Since there is one more pulley to turn and it's not making enought boost to counteract the hp loss from turning the pulley. You can even see an increase in mileage (specially in trucks ) at highway speeds since you have only a pound or two (matters your gears....what rpm range you are in) of boost helping the motor to recieve air rather than sucking it in. But hey, i think AMG knows a little more about tuning cars then I do, and I have not read the article so i'm not sure.

Now that I just reread my response I see that i'm referring to Centrifugal s/c's. I'm not familar with roots or twin screw type s/c. They do make the most boost at low rpms so I can see how that type of s/c can cause economical loss when you don't "need" the power.

All in all it's a good idea...kinda gives you the same advantage as using Nitrous....pulley acts like an idler pully while not "engaged" and when you want the power it's there when you need it, when you don't want the power the engine acts as a n/a engine and gets better mileage.

[Mana4Real]

That sounds good to me. I like the idea of a clutch... It's prolly expensive though.

[tamu93gt]

How did the super stallion turn off and on the sc?

[Mad Max]

The air will flow around the fins on a centriifical(<-spelling)supercharger. It wont work on a supercharger like mine unless you want to have duel induction setup(pain in the a**). There is nowhere for the air to flow around. Roots style work on the principal of moving air(very ineficiant good for looks though) rather than compresing it. I agree with the clutch on a supercharger. Besides Mad Max had one

[Crash!]

If you disengage the drive on an Eaton (like breaking a belt), the rotors will rotate due to the pressure differential. The engine still runs in N/A mode.

[krankieone]

toyota SC10 & SC12 blowers run a clutch system very cheep second hand

[krankieone]

Opps that should read SC 12 & SC14