electric supercharger.. no not the ebay shit

[Phat VR6 3]

right had an idea.. 2 eaton m45 superchargers mounted together. powerfull 12v electric motor.

work out the max rpm of the chargers. set up pulleys so they get there max rpm.

speed controler mounted on the throttle cable to progressly increase boost.

You sould set it up to reach max boost at like 4000 rpm.

Intercooler. injectors, fuel pump, remap and headspacer.

Why wouldn't this work. can think why anyone hasn't done it yet

[Ben Seabrook 4]

no room for them in the bay I would think !!!

[legvw 0]

Wouldn't you need quite a powerfull motor to drive both chargers? And then the motor would need something to power it, which i'm not sure the alternator could cope with?

And as ben said, were would you fit 2 chargers?! :-)

Cool idea though, would be wicked if it was pulled off!

[michael5556 247]

It would require alot of power to drive this though? I think one of the fast brabus's uses 100 bhp just to power the massive charger but would be cool though on a vr! Would be able to fit in a mk3 but not a corrado

[FishWick 21]

A motor and 2 chargers, that's 3 lots of load to drive.

You'd be better of just connecting a motor in place of the Rotrex's gearbox, and that's only one load :-) But why do that when the Rotrex already runs efficiently via it's mechanical drive?

This is inventing for the sake of inventing instead of tackling a problem :-) Nice concept though and motors will almost certainly feature in boosted engines in the future.

Just enjoy a good old fashioned gas guzzling VR turbo whilst you still can!

And your idea is already in place on Audi's current V6 S/C engine. Well, of sorts. They way they've done it is an S/C running at max boost all the time, then an electronic throttle tied in with the throttle pedal governs the boost levels. I.e. some boost at low revs, then all boost at mid to high revs. Neat.

[Phat VR6 3]

yeah that sound good with the audi.

My battery is in my boot and powerstearing res moved so theres a fair bit of room. saying that i don't know how big they are.

Reason behind thinking about doing it is low millage eatons cost £150. and once you built the unit you could just mount it in there. conect to thottle body and off you go (after remap and injectors)

VR6 turbo done properly is still around 3500k on a budget

the advantage over a rotex is you could get full boost at 3000 rpm. I think you would have to run the rotex with its gearbox still inplace. I get the feeling the rotex is just a turbo. with a gearbox on the end to make sure there is no stress on bearings inside the turbo. as they wont be designed to take forse in any direct as you would get with putting a belt and pulley on it.

Or could look into using a old truck turbo or somthing.

as everyone has said though. could you run a 12 motor powerfull enought to spin a charger without flattening the battery. I didn't think it would need that much power to spin one up :S or how to work out how much spare power you have to play with.