Printable Version of Topic

Posted by: sanman Sep 16 2004, 08:26 AM

Has any one seen these?
Not that i want one but I figered club 914 should have a thread
IMOA I dont think a FAN can make boost or am I wrong
whats your opinion?

Posted by: ! Sep 16 2004, 08:37 AM

Same catagory as the penis extender, pills to make your boobs bigger, the cool collar, etc....

Posted by: ArtechnikA Sep 16 2004, 08:55 AM

conceptually, the compressor stage of a turbocharger is just a fan...

if you can turn the fan fast enough, you will make boost.
of course it takes power to drive the fan; lots of it. multiples of HP power.
go have a look at a 5HP motor.

SOME people have reported SOME success with SOME devices.

it is seductive because unlike magnets on the fuel line or pinwheels in the intake duct, it is actually based on (inspired by?) devices that actually work. fundamentally, i believe most are of the opinion that it is a cashflow device - it is designed to provide a stream of cash from the buyer to the seller ...

Posted by: larryp Sep 16 2004, 08:55 AM

Excuse me. The penis extender works.

Posted by: lapuwali Sep 16 2004, 09:25 AM

The one actually marketed as the Electric Supercharger is basically worthless. Nowhere near enough power at the fan to provide any real boost. Something like 5 years ago, when they first appeared, several 911 types in the Bay Area got together, managed to talk the shop out of one for eval purposes, put it on the car and the car on the dyno, and came up with no increase. 2-3hp, maybe, on a 200hp engine, which put it down in the measurement error category.

The big conceptual problem with these devices is the power loss required to drive them. An efficient direct belt-driven supercharger takes 4-5hp to drive it at 8-10psi. 5hp is 3.7kW, or 308 amps @ 12 volts. This is Otmar class electrics. Assuming you could somehow find a 300 amp alternator, you'd need to drive it, and you'd see a power loss on the order of 50%, so it would take 10hp from the engine to drive a 300 amp alternator. Now, you could just draw off a battery for short periods and get enough power to drive a pretty hefty electric motor to drive a blower, but it would really only be for short burts, like one 1/4 mile run or something, with a long period waiting for a normal-size alternator to recharge the battery.

Posted by: phantom914 Sep 16 2004, 09:56 AM

Would that category be: "stuff mikez has tried and been disappointed by"?


Andrew

Posted by: Aaron Cox Sep 16 2004, 10:21 AM

Posted by: tdgray Sep 16 2004, 10:51 AM

That.... That's not mine baby. I don't know where that came from.

Signed,

AP

Posted by: bondo Sep 16 2004, 11:01 AM

I saw an electric supercharger that worked.. it was on one of those shows on cable TV where they show you how to install a product, and they test and review it. It looked like a flat electric motor and maybe a gearbox too, attached to what looked like the intake half of a turbocharger. It's purpose was not to be a cheap and easy bolt on addition... It was for cars with an engine compartment too crowded to fit a conventional belt driven supercharger. If I remember right, it cost over $2000. They put it on the dyno and got a significant increase in power. The way they solved the battery drain problem is with a throttle switch. It only turns on at full throttle. I saw this show like 4 years ago, that particular product may not exist anymore.

Posted by: Brando Sep 16 2004, 11:49 AM

I'll just bolt that supercharger on right next to my air conditioner...

Posted by: Red-Beard Sep 16 2004, 02:11 PM

hahahahahahahahaha

This is where I coined my avatar line...

http://www.esuperchargers.com/

and of course, who could forget....

The E-ram

http://www.electricsupercharger.com/



but, there was one that actually would work and it doesn't cost $12.95...

http://www.boosthead.com/

These guys have real boost compressors and they suck mucho power, something like 50-75 amps, which requires a separate battery just for the boost. Boost is 15 seconds maximum at WOT. The pressure diagrams and the dyno runs match reality. Figure something like $2000 by the time you are done.

Posted by: Red-Beard Sep 16 2004, 02:41 PM

Oh, for a full run at the carnage...

http://forums.pelicanparts.com/showthread.php?s=&threadid=101451

http://forums.pelicanparts.com/showthread.php?s=&threadid=135630&perpage=40&highlight=eram&pagenumber=1

Posted by: SLITS Sep 16 2004, 02:53 PM

Hey James,

Did you move to Corona, Texas?

Posted by: Red-Beard Sep 16 2004, 02:57 PM

Uh, no....

Posted by: phantom914 Sep 16 2004, 03:31 PM

James, whatever you do, don't ask. Just make it clear that it is not you in the photo.



Andrew

Posted by: phantom914 Sep 16 2004, 03:33 PM

......hmmm. Does Aaron own a sheep costume?




Andrew

Posted by: Red-Beard Sep 16 2004, 04:26 PM

no no no

That's the Amazing Zanick riding his "E-Ram"

Corona, TX? it no exist...

Posted by: Aaron Cox Sep 17 2004, 12:38 PM

nah, thats Slits is the hairy one, howard's in the rear

Posted by: phantom914 Sep 17 2004, 12:49 PM

Literally.


And I like how you retaliate against me by insulting Slits and Howard. That'll keep me from ever insulting you again.



Andrew

Posted by: Aaron Cox Sep 17 2004, 12:54 PM

i dont have to take this...I'm going home (wait...i am home)

Posted by: 94teener Sep 17 2004, 06:08 PM

http://www.boosthead.com/home.php


Phil