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914World.com _ 914World Garage _ Supercharger for the 914?

Posted by: PAPERBOY Mar 10 2004, 08:31 PM

Don't know if this has been discussed, but it looks interesting. Actual Eaton unit powered by electric motors. Interesting thread here:(http://www.3.8mustang.com/forum/archive/index.php/t-56576 )
including some info by the creator, his website is boosthead.com.
Wouldn't make sense for a track car but my street car seems like it could use about 5 psi. What do ya think?

Posted by: MRM4418 Mar 10 2004, 09:14 PM

On another forum (not important but a hardcore offroad site), some one brought it up and the designer actually came to the forum and started talking. Main problem is it sucks power down like crazy, I think they had 4 extra batteries in their test car.

Posted by: Brad Roberts Mar 10 2004, 10:19 PM

I just noticed this product advertised in the latest "Turbo" magazine. I like the concept, but our little 55 amp alternators probably couldnt handle the load.

B

Posted by: Jake Raby Mar 10 2004, 10:23 PM

I've done it with an Eaton M45!

Need more head! pissin in the wind otherwise.

Posted by: Brad Roberts Mar 10 2004, 10:33 PM

I agree. We all need more head. Jake Raby for President.

B

Posted by: Dave_Darling Mar 10 2004, 10:55 PM

Waitaminnit... We already got one President in trouble for "more head"....

--DD

Posted by: nebreitling Mar 11 2004, 01:05 AM

a 15-second shot of boost followed by a 20 minute refill belongs on the drag strip, which is not a place my 914 sees much of... i'd much rather build a belt driven beast! that said, if the battery technology develops to support a near-constant boost, i'd be interested

reminds me of the otmar's electric 914, who happens to live in my neighborhood. this bastard EV would smoke most all of our cars off the line. 3rd gear launches with burnouts. crazy shit.

Posted by: Dave_Darling Mar 11 2004, 11:32 AM

They're 3rd gear launches because he'd smoke the tires even more in 5th gear. Those electric motors make peak torque at 0 RPM.

BTW, it isn't battery tech you would need to keep up with the electric motor. It's alternator tech--after all, you need to put the electricity back into the battery at some point. Because electric generators and electric motors are rather less than 100% efficient, it is quite likely that it will cost you more power to run a supercharger electrically than it would to use a V-belt. But you have the advantage of being able to package it much easier--you don't have to have a big pulley right up into the firewall, for instance.

--DD

Posted by: SLITS Mar 11 2004, 12:35 PM

How 'bout a Mercedes Kompressor Supercharger, belt driven off an a/c pulley behind the fan - anybody got a block of aluminum and mill so I can make a mount that replaces the plenum? Oh well, someday.

Posted by: Dave_Darling Mar 11 2004, 01:21 PM

AC pulley == small.
Supercharger pulley == medium to VERY VERY LARGE.

You may have trouble driving an SC with the AC pulley, the thin belt may not be able to transmit enough power. You could make a wider pulley for a wider belt, but then you have to start messing with the fan shroud. Doable? Yeah--you can do anything except turbo a 914. Worth it? Prolly not...

--DD