This might damage my reputation for asking but are these any good?

[aggressive male]

I get the feeling the answer is no and I'll probably be laughed at for asking but does anything like this do any good at all? Or is it all garbage that does you no good no matter who builds it? http://www.electricsupercharger.com/
(http://www.electricsupercharger.com/)

[Vegas69]

I don't know but it's to cheesy for my car. Probably cause you more problems than it's worth.

[matthimself456]

Fraid not man. I saw the math once where someone figured out the size motor you would need to turn a root style blower at even a moderate speed. Using 12 volts DC the motor you would need would be flat out ginormous, draw a bazillion amps, and weigh like 800 pounds. These goofy little scams could not pass enough cfm at even zero boost to run an engine of any decent size. That means they will actually be a restriction. The only performance gains come at like less than 50% throttle opening but know what will increase your hp at 50% throttle for free? Opening it the rest of the way!

[shmoov69]

Maybe for a Geo or something with a TINY airflow already.
We'll forgive you! LOL!
However it may work on a go cart or something!

[TonyL]

It's only a fan. Not capable of building or sustaining BOOST or compressed air. The engine is probably more efficient at drawing in it's own air than that fan can push.

[TonyL]

Ok.

Have a look at this!!!! (http://videos.streetfire.net/Player.aspx?fileid=AB544E3B-5DFF-416D-9CFD-A1AD23CA9564&p=0)

leaf blower + NAAAAAAWZZZZZZ FTW!!!


Oh and some data on the e-ram (http://www.vintagebus.com/howto/e-ram/)

[streetk14]

I had a good laugh reading the dyno results and customer comments section. People actually refer to it as a "supercharger". Funny stuff....

Andy

[68Formula]

Now I know what to do with those old computer fans.

[megaladon6]

i like the "guaranteed UP TO 15hp" so they don't guarantee an actual power increase just that it will be below 15hp. all this for $300, talk about a steal!
although it is by far the nicest design i've seen so far.

[blown69nova]

Bogus crap!

[David Pozzi]

I was walking down the isle at SEMA last year and there was a guy who blasted me with air from that thing. It is QUITE powerful for a 12v motor!

I wouldn't be surprised to see that it makes a few hp gain. The test on their page showed 6 hp gain on a 3 liter engine. A V8 would need at least two of them but probably only make 10 to 12 hp if tuned right. Not a lot of gain. One thing I asked was that the energy removed from the battery has to be replaced so on a road course car the alternator is going to produce more drag because it's charging hard. They say the alt is charging even while off the throttle and braking, not just when you are on it. I'd like to see a test where they stopped the alternator from charging during a pull, I think it would help.

I also asked about air flow when it was turned off, and they said it didn't restrict flow. That was hard to believe, but could be delt with in other ways.
David

[matthimself456]

Yes alternators can create a current whenever they are turning but the more load on it the more power it takes to turn. When you are cruising in the daytime with no a/c electric fans, lights or stereo on the alternator is using very little horsepower from the engine but with the a/c and stereo cranked and all the lights on at night it will cause a lot more parasitic drag. If you jump a car with a dead battery and leave the running car at idle you can even get it to stall when you turn the key on the dead car because the amount of current being drawn from the alternator causes its rotational resistance to skyrocket.

[David Pozzi]

They showed the unit drawing 57 amps, I wonder what hp it takes for an alternator to output that amount?

Here is an example I just found from Powermaster using 57 amps by coincidence. No mention was made of inertial losses of the alternator.


"How much horsepower loss
will an alternator cost ?

As was stated in the answer to the first question, an alternator is a power converter. It converts mechanical power into electrical power. So it doesn't lose power, but rather changes its form. No electrical motor or generator is 100% efficient and this is true of alternators as well. Alternators are about 85% efficient with power being lost in the form of heat and wind resistance (cooling fans). Thus the real power loss of the alternator is relatively small.

How much horsepower does an alternator pull ? You can mathematically determine the horsepower cost at any given load. (Remember, alternators respond to load. If there is no load present the alternator is basically freewheeling.)

Amps x Volts = Watts
Watts / 745.7 (one HP) = Electrical HP Produced by the Alternator
HP x 15% Efficiency Loss = HP Loss
HP + HP Loss = Total HP Used

Example:
57A x 14.9V = 849.3 Watts
849.3 Watts / 745.7 = 1.14 HP
1.14 HP x 15% = 0.17 HP
1.14 + 0.17 = 1.31 HP Total

[SicMonte]

They showed the unit drawing 57 amps, I wonder what hp it takes for an alternator to output that amount?

Here is an example I just found from Powermaster using 57 amps by coincidence. No mention was made of inertial losses of the alternator.


"How much horsepower loss
will an alternator cost ?

As was stated in the answer to the first question, an alternator is a power converter. It converts mechanical power into electrical power. So it doesn't lose power, but rather changes its form. No electrical motor or generator is 100% efficient and this is true of alternators as well. Alternators are about 85% efficient with power being lost in the form of heat and wind resistance (cooling fans). Thus the real power loss of the alternator is relatively small.

How much horsepower does an alternator pull ? You can mathematically determine the horsepower cost at any given load. (Remember, alternators respond to load. If there is no load present the alternator is basically freewheeling.)

Amps x Volts = Watts
Watts / 745.7 (one HP) = Electrical HP Produced by the Alternator
HP x 15% Efficiency Loss = HP Loss
HP + HP Loss = Total HP Used

Example:
57A x 14.9V = 849.3 Watts
849.3 Watts / 745.7 = 1.14 HP
1.14 HP x 15% = 0.17 HP
1.14 + 0.17 = 1.31 HP Total


WHAT??!! Where do you all find this stuff at??

[derekf]

Found here: http://www.hotrodssuperstore.com/faq.html

[David Pozzi]

Found it on the net at the link above.
It sure didn't come out of my head!!!:hammer:

[high pressure]

pos!

[Texas Hotrod]

Looks like the biggest gain in this whole thread is to mount a leaf blower in the trunk, and pipe it into the air intake. Even w/o the NOSSSSSSS, it's an impressive gain. Self-supporting, so there's no engine robbing issues.

[70bird]

Anyone know where to find a 1500 ft extension cord?:lmao:

[megaladon6]

you need one of these... https://static1.pt-content.com/images/noimg.gif (http://img339.imageshack.us/my.php?image=applic3uu1.jpg)

[Andrew McBride]

heck ya they work! My 92 civic gained 200 H.P. with the giant wing, can muffler and supercharger combination! ....j/k

I actually know a guy with a ferrari-fiero "ferrario" that has one installed on his car, it doesn't work.