A few years ago there was a company that had a electric supercharger and they claimed it made 8psi boost. It used 3 electric motors connected to the blower(or what ever they called it) and used 2 car batteries. It could only be used for a few seconds.

 

Here is an idea of what it takes to make this idea actually work.
http://www.turbomagazine.com/tech/04..._supercharger/
Roy

 

If you have any vacuum reading at WOT then you have some restriction in your intake!!!!!

If you have restriction in your intake then you will gain by eliminating/reducing the restrictions....MAF, TB, Air Filter, intake ducting, etc

If you have a positive pressure in you plenum then you either have a good ram air effect going on or you have a supercharger....

Anytime you increase MAP you should see a performance gain

I like MAP because it even includes the effect of altitude, barameter...

 

finally a voice or reason

 

VETTEMAN, I THINK YOU EXPLAINED IT BEST HERE.
WITH AN EXHAUST PROPELLED TURBO, THE BOOST ALSO INCREASES WITH ENGINE RPM. THAT WONT HAPPEN WITH A LEAF BLOWER. AS THE ENGINE INCREASES RPMS, THE PRESSURE/AIRVOLUME STAYS THE SAME (UNLESS OF COURSE YOU HAVE A MONSTER BLOWER). IT MAY HELP WITH LOW END TORQUE, BUT HI RPM HP AND TORQUE WOULD DROP OFF PROPORIONATE TO THE AIR FROM THE BLOWER. THAT WOULD BE THE SAME WITH AN ALTERNATOR POWERED BLOWER. ALTERNATOR OUTPUT, AND BLOWER OUTPUT, STAYS THE SAME AS ENGINE RPMS INCREASE. A PULLEY OPERATED BLOWER DEVICE WOULD BE BEST. LIKE THE EXHAUST TURBO, AIR FLOW/PRESSURE WOULD INCREASE ALONG WITH RPMS.

 

Has anyone ever made a supercharger that was powered further down the drive train? Maybe near the axle or wheels with some type of gear system? Would this be less efficient? It would help by taking it out of the cluttered and hot engine compartment. A similar concept to a rear mounted turbo. Would the distance reduce the pressure too much? It would probably be easier to find a spot for the intercooler also.

 

It was called "glow fuel". It was a mixture of oil, methanol alcohol, and (usually) 0-50% nitromethane.
Those little engines would not develop the power to pressurize a large cfm of air....not even the .60's and .65's.

The only thing that puzzles me is the desire to re-invent the wheel.
Fully-developed kits are available to supercharge and to turbocharge V8 engines...you'll spend a LOT more money and experience a LOT more headaches trying to come up with an alternate method of powering a supercharger.

Glad you guys are thinking, though....

Larry
code5coupe

 

I don't know how much a heater blower flows. But, couldn't you use 2 and use the 2nd to come in at a higher RPM like a 2 stage NOS system does? Those run at 12 volts and seem pretty strong.

 

The problem with that would be that then your boost would be based on car speed not engine speed. (MPH vs RPM). The only way to make that work would then to gear it back up (with the same gear ratios as your tranny) and of course the supercharger transmission would have to shift gears when your car did. Plus your losing more power because you have to transfer the power through the transmission and the drivetrain, then through the supercharger transmission and then into the supercharger.

Now it would be something if you could power an electric engine to turn the supercharger at command, then you could build full boost at low rpm. Yes you'd have to have extra draw to power the electric motor, but the increased boost should more than make up for the difference.

That would have some really neat possibilities. You could program the computer that controlled the electric motor to turn up the boost to a certaint point in each gear, and you could have it produce less boost if the car detected will spin. You could turn it off almost all the way when your just cruising down the highway, to have the supercharger act as a restricion in the intake, increasing your highway mpg.

The big questions would be how much power a supercharger requires at max boost, and how much electricity the motor would require at max boost, then figuring out a way to power it.

 

one of the leading suppliers of real blowers has a test stand that drives the blower by itself....he uses a ''built'' 350 chev carbed motor for power to drive the test rig because 50 hp electric motors were not suitable.

so if you put a sbc engine/generator in the back of your car and a 100 hp elec COMPRESSOR up front on the vehicle powerplant, you might have (?) something.

or maybe skip the electric components and use two snowmobile engines like the chapparal j-car.

or just put a big block in.

 

Easy vetteman, you are on thin ice there.

Since you didn't specify if your gage was reading absolute pressure or gage pressure, nobody knows what you really meant.

It's okay to disagree with someone on the CF.
It's not okay to call names.

Larry
code5coupe

 

now thats an idea, just tow a SBC in a littler red waggon behing your car and you got it made

 

It's funny you guys are talking about this. I was just thinking about trying to find a junker car to bolt one of those huge 120v heater blowers from a forced hot air house furnace. I have an inverter that I use on my truck that I use to power my sump pump in case of power failure. The blower only uses about 4 amps a.c., and my inverter could easily handle this. This is not a huge draw on your alternator. The amp in my car draws up to 30 or 40 amp d.c. which is much more I am sure. I don't think the inverter has large enough wires to draw that much amperage. The formula to figure out the amp draw is easy, but I am lazy.

I think that with the volume of air that is being forced out of this thing you would go faster for sure. It is probably a lot more than the leaf blower in the vid. The output on this blower is like 10x12. I don't know how much boost if any it will make. It just blows a lot of air. In a turbo, the tolerances are much much tighter making it so air cannot blow back through. This is how it builds pressure.

You don't want to do this to your vette, that is for sure. This blower is nearly as big as your motor.

Dave

 

It won't make any boost. It is neither a positive-displacement air pump, nor a high-speed centrifigal air pump. It is a fan. Fans move lots of air against no load.
A supercharger must be able to build pressure, which a fan cannot do.
Good Luck.

Larry
code5coupe

 

A large blower from a house heater will put out less than 1/4 psi.

The technology for the blower is already there, this thread is just kicking around alternative ways of powering it.

 

Nuclear would work.

 

We use the term "blower" as slang for a supercharger. In fact a supercharger is an air compressor. Your furnace blower is just that, a blower, nothing more than a fan, a squirrel cage blower, an air handler.



I am sure your inverter IS rated for 4 amps or greater, but... Four amps @ 120 volts is 480 watts. It takes 40 amps of current at 12 volts to make 480 watts. You had better be sure to turn off your radideo before you fire up the furnace.

RACE ON!!!

 

Apparently you are correct on this statement.....as usual

however I always thought they were different. A supercharger pushed air into the throttle body/carburater and a blower was located after the carburater and forced the mixture into the cylinders.....learn something new everyday

Interesting article related to this topic

http://www.chevyhiperformance.com/te..._blowers_info/

 

The old 6-71 is/was a supercharger. The distinction you are making is the same we do with intake manifolds, dry (like a TPI) or wet (like a Crossfire or carb).

RACE ON!!!

 

all i said was that if i was reffering to vacuum, which i was, that anyone with enough knowledge to offer anything useful in this thread would know that vaccum was a negative pressure. He wanted to argue semantics to make himself look smarter. apparenty it did not work